diff --git a/.example/os/gfsnotify/fsnotify.go b/.example/os/gfsnotify/fsnotify.go
index 833732398..729fcd1b9 100644
--- a/.example/os/gfsnotify/fsnotify.go
+++ b/.example/os/gfsnotify/fsnotify.go
@@ -5,6 +5,7 @@ import (
 	"log"
 
 	"github.com/fsnotify/fsnotify"
+
 	"github.com/gogf/gf/v2/os/glog"
 )
 
@@ -15,13 +16,13 @@ func main() {
 		log.Fatal(err)
 	}
 	defer watch.Close()
-	//添加要监控的对象，文件或文件夹
-	//err = watch.Add("D:\\Workspace\\Go\\GOPATH\\src\\gitee.com\\johng\\gf\\geg\\other\\test.go")
+	// 添加要监控的对象，文件或文件夹
+	// err = watch.Add("D:\\Workspace\\Go\\GOPATH\\src\\gitee.com\\johng\\gf\\geg\\other\\test.go")
 	err = watch.Add("/Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/other/test.go")
 	if err != nil {
 		log.Fatal(err)
 	}
-	//我们另启一个goroutine来处理监控对象的事件
+	// 我们另启一个goroutine来处理监控对象的事件
 	go func() {
 		for {
 			select {
@@ -36,6 +37,6 @@ func main() {
 		}
 	}()
 
-	//循环
+	// 循环
 	select {}
 }
diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644
index 000000000..511d6b8c3
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,950 @@
+# This file contains all available configuration options
+# with their default values.
+
+# options for analysis running
+run:
+  # default concurrency is a available CPU number
+  concurrency: 4
+
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  timeout: 5m
+
+  # exit code when at least one issue was found, default is 1
+  issues-exit-code: 1
+
+  # include test files or not, default is true
+  tests: true
+
+  # list of build tags, all linters use it. Default is empty list.
+  build-tags:
+    - mytag
+
+  # which dirs to skip: issues from them won't be reported;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but default dirs are skipped independently
+  # from this option's value (see skip-dirs-use-default).
+  # "/" will be replaced by current OS file path separator to properly work
+  # on Windows.
+  skip-dirs:
+    - packed
+    - documentation
+    - docker
+
+  # default is true. Enables skipping of directories:
+  #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs-use-default: true
+
+  # which files to skip: they will be analyzed, but issues from them
+  # won't be reported. Default value is empty list, but there is
+  # no need to include all autogenerated files, we confidently recognize
+  # autogenerated files. If it's not please let us know.
+  # "/" will be replaced by current OS file path separator to properly work
+  # on Windows.
+  skip-files:
+    - ".*\\.my\\.go$"
+    - lib/bad.go
+
+  # by default isn't set. If set we pass it to "go list -mod={option}". From "go help modules":
+  # If invoked with -mod=readonly, the go command is disallowed from the implicit
+  # automatic updating of go.mod described above. Instead, it fails when any changes
+  # to go.mod are needed. This setting is most useful to check that go.mod does
+  # not need updates, such as in a continuous integration and testing system.
+  # If invoked with -mod=vendor, the go command assumes that the vendor
+  # directory holds the correct copies of dependencies and ignores
+  # the dependency descriptions in go.mod.
+  #modules-download-mode: release|readonly|vendor
+
+  # Allow multiple parallel golangci-lint instances running.
+  # If false (default) - golangci-lint acquires file lock on start.
+  allow-parallel-runners: true
+
+
+# output configuration options
+output:
+  # colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
+  # default is "colored-line-number"
+  format: colored-line-number
+
+  # print lines of code with issue, default is true
+  print-issued-lines: true
+
+  # print linter name in the end of issue text, default is true
+  print-linter-name: true
+
+  # make issues output unique by line, default is true
+  uniq-by-line: true
+
+  # add a prefix to the output file references; default is no prefix
+  path-prefix: ""
+
+  # sorts results by: filepath, line and column
+  sort-results: true
+
+
+# all available settings of specific linters
+linters-settings:
+  bidichk:
+    # The following configurations check for all mentioned invisible unicode
+    # runes. It can be omitted because all runes are enabled by default.
+    left-to-right-embedding: true
+    right-to-left-embedding: true
+    pop-directional-formatting: true
+    left-to-right-override: true
+    right-to-left-override: true
+    left-to-right-isolate: true
+    right-to-left-isolate: true
+    first-strong-isolate: true
+    pop-directional-isolate: true
+
+  cyclop:
+    # the maximal code complexity to report
+    max-complexity: 50
+    # the maximal average package complexity. If it's higher than 0.0 (float) the check is enabled (default 0.0)
+    package-average: 0.0
+    # should ignore tests (default false)
+    skip-tests: false
+
+  dogsled:
+    # checks assignments with too many blank identifiers; default is 2
+    max-blank-identifiers: 2
+
+  dupl:
+    # tokens count to trigger issue, 150 by default
+    threshold: 100
+
+  errcheck:
+    # report about not checking of errors in type assertions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+
+    # [deprecated] comma-separated list of pairs of the form pkg:regex
+    # the regex is used to ignore names within pkg. (default "fmt:.*").
+    # see https://github.com/kisielk/errcheck#the-deprecated-method for details
+    #ignore: fmt:.*,io/ioutil:^Read.*
+
+    # [deprecated] use exclude-functions instead.
+    # path to a file containing a list of functions to exclude from checking
+    # see https://github.com/kisielk/errcheck#excluding-functions for details
+    # exclude: /path/to/file.txt
+
+    # list of functions to exclude from checking, where each entry is a single function to exclude.
+    # see https://github.com/kisielk/errcheck#excluding-functions for details
+    exclude-functions:
+      - io/ioutil.ReadFile
+      - io.Copy(*bytes.Buffer)
+      - io.Copy(os.Stdout)
+
+  errorlint:
+    # Check whether fmt.Errorf uses the %w verb for formatting errors. See the readme for caveats
+    errorf: true
+    # Check for plain type assertions and type switches
+    asserts: true
+    # Check for plain error comparisons
+    comparison: true
+
+  exhaustive:
+    # check switch statements in generated files also
+    check-generated: false
+    # presence of "default" case in switch statements satisfies exhaustiveness,
+    # even if all enum members are not listed
+    default-signifies-exhaustive: false
+    # enum members matching the supplied regex do not have to be listed in
+    # switch statements to satisfy exhaustiveness
+    ignore-enum-members: ""
+    # consider enums only in package scopes, not in inner scopes
+    package-scope-only: false
+
+  exhaustivestruct:
+    # Struct Patterns is list of expressions to match struct packages and names
+    # The struct packages have the form example.com/package.ExampleStruct
+    # The matching patterns can use matching syntax from https://pkg.go.dev/path#Match
+    # If this list is empty, all structs are tested.
+    struct-patterns:
+      - '*.Test'
+      - 'example.com/package.ExampleStruct'
+      - '*.Test2'
+      - '*.Embedded'
+      - '*.External'
+
+  forbidigo:
+    # Forbid the following identifiers (identifiers are written using regexp):
+    forbid:
+      - ^print.*$
+      - 'fmt\.Print.*'
+      - fmt.Println.* # too much log noise
+      - ginkgo\\.F.* # these are used just for local development
+    # Exclude godoc examples from forbidigo checks.  Default is true.
+    exclude_godoc_examples: false
+
+  funlen:
+    lines: 150
+    statements: 50
+
+  gci:
+    # put imports beginning with prefix after 3rd-party packages;
+    # only support one prefix
+    # if not set, use goimports.local-prefixes
+    local-prefixes: github.com/gogf/gf
+
+  gocognit:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 50
+
+  goconst:
+    # minimal length of string constant, 3 by default
+    min-len: 3
+    # minimum occurrences of constant string count to trigger issue, 3 by default
+    min-occurrences: 3
+    # ignore test files, false by default
+    ignore-tests: false
+    # look for existing constants matching the values, true by default
+    match-constant: true
+    # search also for duplicated numbers, false by default
+    numbers: false
+    # minimum value, only works with goconst.numbers, 3 by default
+    min: 3
+    # maximum value, only works with goconst.numbers, 3 by default
+    max: 3
+    # ignore when constant is not used as function argument, true by default
+    ignore-calls: true
+
+  gocritic:
+    # Which checks should be enabled; can't be combined with 'disabled-checks';
+    # See https://go-critic.github.io/overview#checks-overview
+    # To check which checks are enabled run `GL_DEBUG=gocritic golangci-lint run`
+    # By default list of stable checks is used.
+    enabled-checks:
+      - nestingReduce
+      - unnamedresult
+      - ruleguard
+      - truncateCmp
+
+    # Which checks should be disabled; can't be combined with 'enabled-checks'; default is empty
+    disabled-checks:
+      - regexpMust
+      - ifElseChain
+      - exitAfterDefer
+
+    # Enable multiple checks by tags, run `GL_DEBUG=gocritic golangci-lint run` to see all tags and checks.
+    # Empty list by default. See https://github.com/go-critic/go-critic#usage -> section "Tags".
+    enabled-tags:
+      - performance
+    disabled-tags:
+      - experimental
+
+    # Settings passed to gocritic.
+    # The settings key is the name of a supported gocritic checker.
+    # The list of supported checkers can be find in https://go-critic.github.io/overview.
+    settings:
+      captLocal: # must be valid enabled check name
+        # whether to restrict checker to params only (default true)
+        paramsOnly: true
+      elseif:
+        # whether to skip balanced if-else pairs (default true)
+        skipBalanced: true
+      hugeParam:
+        # size in bytes that makes the warning trigger (default 80)
+        sizeThreshold: 80
+      nestingReduce:
+        # min number of statements inside a branch to trigger a warning (default 5)
+        bodyWidth: 5
+      rangeExprCopy:
+        # size in bytes that makes the warning trigger (default 512)
+        sizeThreshold: 512
+        # whether to check test functions (default true)
+        skipTestFuncs: true
+      rangeValCopy:
+        # size in bytes that makes the warning trigger (default 128)
+        sizeThreshold: 32
+        # whether to check test functions (default true)
+        skipTestFuncs: true
+      ruleguard:
+        # Enable debug to identify which 'Where' condition was rejected.
+        # The value of the parameter is the name of a function in a ruleguard file.
+        #
+        # When a rule is evaluated:
+        # If:
+        #   The Match() clause is accepted; and
+        #   One of the conditions in the Where() clause is rejected,
+        # Then:
+        #   ruleguard prints the specific Where() condition that was rejected.
+        #
+        # The flag is passed to the ruleguard 'debug-group' argument.
+        debug: 'emptyDecl'
+        # Deprecated, use 'failOn' param.
+        # If set to true, identical to failOn='all', otherwise failOn=''
+        failOnError: false
+        # Determines the behavior when an error occurs while parsing ruleguard files.
+        # If flag is not set, log error and skip rule files that contain an error.
+        # If flag is set, the value must be a comma-separated list of error conditions.
+        # - 'all':    fail on all errors.
+        # - 'import': ruleguard rule imports a package that cannot be found.
+        # - 'dsl':    gorule file does not comply with the ruleguard DSL.
+        failOn: dsl
+        # Comma-separated list of file paths containing ruleguard rules.
+        # If a path is relative, it is relative to the directory where the golangci-lint command is executed.
+        # The special '${configDir}' variable is substituted with the absolute directory containing the golangci config file.
+        # Glob patterns such as 'rules-*.go' may be specified.
+        rules: '' #${configDir}/ruleguard/rules-*.go,${configDir}/myrule1.go'
+      #tooManyResultsChecker:
+        # maximum number of results (default 5)
+        #maxResults: 10
+      truncateCmp:
+        # whether to skip int/uint/uintptr types (default true)
+        skipArchDependent: true
+      underef:
+        # whether to skip (*x).method() calls where x is a pointer receiver (default true)
+        skipRecvDeref: true
+      unnamedResult:
+        # whether to check exported functions
+        checkExported: true
+
+  gocyclo:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 30
+
+  godot:
+    # comments to be checked: `declarations`, `toplevel`, or `all`
+    scope: declarations
+    # list of regexps for excluding particular comment lines from check
+    exclude:
+      # example: exclude comments which contain numbers
+      # - '[0-9]+'
+    # check that each sentence starts with a capital letter
+    capital: false
+
+  godox:
+    # report any comments starting with keywords, this is useful for TODO or FIXME comments that
+    # might be left in the code accidentally and should be resolved before merging
+    keywords: # default keywords are TODO, BUG, and FIXME, these can be overwritten by this setting
+      #- NOTE
+      - BUG
+      - FIXME
+      - OPTIMIZE # marks code that should be optimized before merging
+      - HACK # marks hack-arounds that should be removed before merging
+
+  gofmt:
+    # simplify code: gofmt with `-s` option, true by default
+    simplify: true
+
+  gofumpt:
+    # Select the Go version to target. The default is `1.15`.
+    lang-version: "1.16"
+
+    # Choose whether or not to use the extra rules that are disabled
+    # by default
+    extra-rules: false
+
+  goheader:
+    values:
+      const:
+        # define here const type values in format k:v, for example:
+        # COMPANY: MY COMPANY
+      regexp:
+        # define here regexp type values, for example
+        # AUTHOR: .*@mycompany\.com
+    template: # |-
+      # put here copyright header template for source code files, for example:
+      # Note: {{ YEAR }} is a builtin value that returns the year relative to the current machine time.
+      #
+      # {{ AUTHOR }} {{ COMPANY }} {{ YEAR }}
+      # SPDX-License-Identifier: Apache-2.0
+
+      # Licensed under the Apache License, Version 2.0 (the "License");
+      # you may not use this file except in compliance with the License.
+      # You may obtain a copy of the License at:
+
+      #   http://www.apache.org/licenses/LICENSE-2.0
+
+      # Unless required by applicable law or agreed to in writing, software
+      # distributed under the License is distributed on an "AS IS" BASIS,
+      # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      # See the License for the specific language governing permissions and
+      # limitations under the License.
+    template-path:
+      # also as alternative of directive 'template' you may put the path to file with the template source
+
+  goimports:
+    # put imports beginning with prefix after 3rd-party packages;
+    # it's a comma-separated list of prefixes
+    local-prefixes: github.com/gogf/gf
+
+  golint:
+    # minimal confidence for issues, default is 0.8
+    min-confidence: 0.9
+
+  gomnd:
+    settings:
+      mnd:
+        # the list of enabled checks, see https://github.com/tommy-muehle/go-mnd/#checks for description.
+        checks: argument,case,condition,operation,return,assign
+        # ignored-numbers: 1000
+        # ignored-files: magic_.*.go
+        # ignored-functions: math.*
+
+  gomoddirectives:
+    # Allow local `replace` directives. Default is false.
+    replace-local: false
+    # List of allowed `replace` directives. Default is empty.
+    replace-allow-list:
+      - launchpad.net/gocheck
+      - github.com/coreos/etcd
+      - google.golang.org/grpc
+      - gitlab.jntmedia.cn/lanren/core
+    # Allow to not explain why the version has been retracted in the `retract` directives. Default is false.
+    retract-allow-no-explanation: false
+    # Forbid the use of the `exclude` directives. Default is false.
+    exclude-forbidden: false
+
+  gomodguard:
+    allowed:
+      modules:                                                        # List of allowed modules
+        # - gopkg.in/yaml.v2
+        - gorm.io/gorm
+        - gorm.io/driver/mysql
+        - k8s.io/klog
+      domains:                                                        # List of allowed module domains
+        # - golang.org
+        - google.golang.org
+        - gopkg.in
+        - golang.org
+        - github.com
+        - go.uber.org
+    blocked:
+      modules:                                                        # List of blocked modules
+        # - github.com/uudashr/go-module:                             # Blocked module
+        #     recommendations:                                        # Recommended modules that should be used instead (Optional)
+        #       - golang.org/x/mod
+        #     reason: "`mod` is the official go.mod parser library."  # Reason why the recommended module should be used (Optional)
+      versions:                                                       # List of blocked module version constraints
+        # - github.com/mitchellh/go-homedir:                          # Blocked module with version constraint
+        #     version: "< 1.1.0"                                      # Version constraint, see https://github.com/Masterminds/semver#basic-comparisons
+        #     reason: "testing if blocked version constraint works."  # Reason why the version constraint exists. (Optional)
+      local_replace_directives: false                                 # Set to true to raise lint issues for packages that are loaded from a local path via replace directive
+
+  gosec:
+    # To select a subset of rules to run.
+    # Available rules: https://github.com/securego/gosec#available-rules
+    includes:
+      - G401
+      - G306
+      - G101
+    # To specify a set of rules to explicitly exclude.
+    # Available rules: https://github.com/securego/gosec#available-rules
+    excludes:
+      - G204
+    # Exclude generated files
+    exclude-generated: true
+    # Filter out the issues with a lower severity than the given value. Valid options are: low, medium, high.
+    severity: "low"
+    # Filter out the issues with a lower confidence than the given value. Valid options are: low, medium, high.
+    confidence: "low"
+    # To specify the configuration of rules.
+    # The configuration of rules is not fully documented by gosec:
+    # https://github.com/securego/gosec#configuration
+    # https://github.com/securego/gosec/blob/569328eade2ccbad4ce2d0f21ee158ab5356a5cf/rules/rulelist.go#L60-L102
+    config:
+      G306: "0600"
+      G101:
+        pattern: "(?i)example"
+        ignore_entropy: false
+        entropy_threshold: "80.0"
+        per_char_threshold: "3.0"
+        truncate: "32"
+
+  gosimple:
+    # Select the Go version to target. The default is '1.13'.
+    go: "1.16"
+    # https://staticcheck.io/docs/options#checks
+    checks: [ "all" ]
+
+  govet:
+    # report about shadowed variables
+    check-shadowing: true
+
+    # settings per analyzer
+    settings:
+      printf: # analyzer name, run `go tool vet help` to see all analyzers
+        funcs: # run `go tool vet help printf` to see available settings for `printf` analyzer
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Infof
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Warnf
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Errorf
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Fatalf
+
+    # enable or disable analyzers by name
+    # run `go tool vet help` to see all analyzers
+    enable:
+      - atomicalign
+    enable-all: false
+    disable:
+      - shadow
+    disable-all: false
+
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+      - github.com/sirupsen/logrus
+    packages-with-error-message:
+      # specify an error message to output when a blacklisted package is used
+      - github.com/sirupsen/logrus: "logging is allowed only by logutils.Log"
+
+  ifshort:
+    # Maximum length of variable declaration measured in number of lines, after which linter won't suggest using short syntax.
+    # Has higher priority than max-decl-chars.
+    max-decl-lines: 1
+    # Maximum length of variable declaration measured in number of characters, after which linter won't suggest using short syntax.
+    max-decl-chars: 30
+
+  importas:
+    # if set to `true`, force to use alias.
+    no-unaliased: true
+    # List of aliases
+    alias:
+      # using `servingv1` alias for `knative.dev/serving/pkg/apis/serving/v1` package
+      - pkg: knative.dev/serving/pkg/apis/serving/v1
+        alias: servingv1
+      # using `autoscalingv1alpha1` alias for `knative.dev/serving/pkg/apis/autoscaling/v1alpha1` package
+      - pkg: knative.dev/serving/pkg/apis/autoscaling/v1alpha1
+        alias: autoscalingv1alpha1
+      # You can specify the package path by regular expression,
+      # and alias by regular expression expansion syntax like below.
+      # see https://github.com/julz/importas#use-regular-expression for details
+      - pkg: knative.dev/serving/pkg/apis/(\w+)/(v[\w\d]+)
+        alias: $1$2
+
+  ireturn:
+    # ireturn allows using `allow` and `reject` settings at the same time.
+    # Both settings are lists of the keywords and regular expressions matched to interface or package names.
+    # keywords:
+    # - `empty` for `interface{}`
+    # - `error` for errors
+    # - `stdlib` for standard library
+    # - `anon` for anonymous interfaces
+
+    # By default, it allows using errors, empty interfaces, anonymous interfaces,
+    # and interfaces provided by the standard library.
+    allow:
+    - anon
+    - error
+    - empty
+    - stdlib
+    # You can specify idiomatic endings for interface
+    - (or|er)$
+
+    # Reject patterns
+#     reject:
+#     - github.com\/user\/package\/v4\.Type
+
+  lll:
+    # max line length, lines longer will be reported. Default is 120.
+    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
+    line-length: 240
+    # tab width in spaces. Default to 1.
+    tab-width: 4
+
+  makezero:
+    # Allow only slices initialized with a length of zero. Default is false.
+    always: false
+
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+
+  misspell:
+    # Correct spellings using locale preferences for US or UK.
+    # Default is to use a neutral variety of English.
+    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
+    locale: US
+    ignore-words:
+      - someword
+
+  nakedret:
+    # make an issue if func has more lines of code than this setting and it has naked returns; default is 30
+    max-func-lines: 30
+
+  nestif:
+    # minimal complexity of if statements to report, 5 by default
+    min-complexity: 4
+
+  nilnil:
+    # By default, nilnil checks all returned types below.
+    checked-types:
+      - ptr
+      - func
+      - iface
+      - map
+      - chan
+
+  nlreturn:
+    # size of the block (including return statement that is still "OK")
+    # so no return split required.
+    block-size: 1
+
+  nolintlint:
+    # Disable to ensure that all nolint directives actually have an effect. Default is true.
+    allow-unused: true
+    # Disable to ensure that nolint directives don't have a leading space. Default is true.
+    allow-leading-space: true
+    # Exclude following linters from requiring an explanation.  Default is [].
+    allow-no-explanation: [ ]
+    # Enable to require an explanation of nonzero length after each nolint directive. Default is false.
+    require-explanation: false
+    # Enable to require nolint directives to mention the specific linter being suppressed. Default is false.
+    require-specific: true
+
+  prealloc:
+    # XXX: we don't recommend using this linter before doing performance profiling.
+    # For most programs usage of prealloc will be a premature optimization.
+
+    # Report preallocation suggestions only on simple loops that have no returns/breaks/continues/gotos in them.
+    # True by default.
+    simple: true
+    range-loops: true # Report preallocation suggestions on range loops, true by default
+    for-loops: false # Report preallocation suggestions on for loops, false by default
+
+  promlinter:
+    # Promlinter cannot infer all metrics name in static analysis.
+    # Enable strict mode will also include the errors caused by failing to parse the args.
+    strict: false
+    # Please refer to https://github.com/yeya24/promlinter#usage for detailed usage.
+    disabled-linters:
+    #  - "Help"
+    #  - "MetricUnits"
+    #  - "Counter"
+    #  - "HistogramSummaryReserved"
+    #  - "MetricTypeInName"
+    #  - "ReservedChars"
+    #  - "CamelCase"
+    #  - "lintUnitAbbreviations"
+
+  predeclared:
+    # comma-separated list of predeclared identifiers to not report on
+    ignore: ""
+    # include method names and field names (i.e., qualified names) in checks
+    q: false
+
+  rowserrcheck:
+    packages:
+      - github.com/jmoiron/sqlx
+
+  revive:
+    # see https://github.com/mgechev/revive#available-rules for details.
+    ignore-generated-header: true
+    severity: warning
+    rules:
+      - name: indent-error-flow
+        severity: warning
+      - name: add-constant
+        severity: warning
+        arguments:
+          - maxLitCount: "3"
+            allowStrs: '""'
+            allowInts: "0,1,2"
+            allowFloats: "0.0,0.,1.0,1.,2.0,2."
+
+  staticcheck:
+    # Select the Go version to target. The default is '1.13'.
+    go: "1.16"
+    # https://staticcheck.io/docs/options#checks
+    checks: [ "all" ]
+
+  stylecheck:
+    # Select the Go version to target. The default is '1.13'.
+    go: "1.16"
+    # https://staticcheck.io/docs/options#checks
+    checks: [ "all", "-ST1000", "-ST1003", "-ST1016", "-ST1020", "-ST1021", "-ST1022" ]
+    # https://staticcheck.io/docs/options#dot_import_whitelist
+    dot-import-whitelist:
+      - fmt
+    # https://staticcheck.io/docs/options#initialisms
+    initialisms: [ "ACL", "API", "ASCII", "CPU", "CSS", "DNS", "EOF", "GUID", "HTML", "HTTP", "HTTPS", "ID", "IP", "JSON", "QPS", "RAM", "RPC", "SLA", "SMTP", "SQL", "SSH", "TCP", "TLS", "TTL", "UDP", "UI", "GID", "UID", "UUID", "URI", "URL", "UTF8", "VM", "XML", "XMPP", "XSRF", "XSS" ]
+    # https://staticcheck.io/docs/options#http_status_code_whitelist
+    http-status-code-whitelist: [ "200", "400", "404", "500" ]
+
+  tagliatelle:
+    # check the struck tag name case
+    case:
+      # use the struct field name to check the name of the struct tag
+      use-field-name: true
+      rules:
+        # any struct tag type can be used.
+        # support string case: `camel`, `pascal`, `kebab`, `snake`, `goCamel`, `goPascal`, `goKebab`, `goSnake`, `upper`, `lower`
+        json: camel
+        yaml: camel
+        xml: camel
+        bson: camel
+        avro: snake
+        mapstructure: kebab
+
+  testpackage:
+    # regexp pattern to skip files
+    skip-regexp: (export|internal)_test\.go
+
+  thelper:
+    # The following configurations enable all checks. It can be omitted because all checks are enabled by default.
+    # You can enable only required checks deleting unnecessary checks.
+    test:
+      first: true
+      name: true
+      begin: true
+    benchmark:
+      first: true
+      name: true
+      begin: true
+    tb:
+      first: true
+      name: true
+      begin: true
+
+  tenv:
+    # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures.
+    # By default, only methods that take `*testing.T`, `*testing.B`, and `testing.TB` as arguments are checked.
+    all: false
+
+  unparam:
+    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
+    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+
+  unused:
+    # Select the Go version to target. The default is '1.13'.
+    go: "1.16"
+
+  varnamelen:
+    # The longest distance, in source lines, that is being considered a "small scope." (defaults to 5)
+    # Variables used in at most this many lines will be ignored.
+    max-distance: 5
+    # The minimum length of a variable's name that is considered "long." (defaults to 3)
+    # Variable names that are at least this long will be ignored.
+    min-name-length: 1
+    # Check method receiver names. (defaults to false)
+    check-receiver: false
+    # Check named return values. (defaults to false)
+    check-return: false
+    # Ignore "ok" variables that hold the bool return value of a type assertion. (defaults to false)
+    ignore-type-assert-ok: false
+    # Ignore "ok" variables that hold the bool return value of a map index. (defaults to false)
+    ignore-map-index-ok: false
+    # Ignore "ok" variables that hold the bool return value of a channel receive. (defaults to false)
+    ignore-chan-recv-ok: false
+    # Optional list of variable names that should be ignored completely. (defaults to empty list)
+    ignore-names:
+      - err
+    # Optional list of variable declarations that should be ignored completely. (defaults to empty list)
+    # Entries must be in the form of "<variable name> <type>" or "<variable name> *<type>".
+    ignore-decls:
+      - c echo.Context
+      - t testing.T
+      - f *foo.Bar
+      - e error
+      - i int
+
+  whitespace:
+    multi-if: false   # Enforces newlines (or comments) after every multi-line if statement
+    multi-func: false # Enforces newlines (or comments) after every multi-line function signature
+
+  wrapcheck:
+    # An array of strings that specify substrings of signatures to ignore.
+    # If this set, it will override the default set of ignored signatures.
+    # See https://github.com/tomarrell/wrapcheck#configuration for more information.
+    ignoreSigs:
+      - .Errorf(
+      - errors.New(
+      - errors.Unwrap(
+      - .Wrap(
+      - .Wrapf(
+      - .WithMessage(
+      - .WithMessagef(
+      - .WithStack(
+    ignorePackageGlobs:
+        - encoding/*
+        - github.com/pkg/*
+
+  wsl:
+    # See https://github.com/bombsimon/wsl/blob/master/doc/configuration.md for
+    # documentation of available settings. These are the defaults for
+    # `golangci-lint`.
+    allow-assign-and-anything: false
+    allow-assign-and-call: true
+    allow-cuddle-declarations: false
+    allow-multiline-assign: true
+    allow-separated-leading-comment: false
+    allow-trailing-comment: false
+    force-case-trailing-whitespace: 0
+    force-err-cuddling: false
+    force-short-decl-cuddling: false
+    strict-append: true
+
+  # The custom section can be used to define linter plugins to be loaded at runtime.
+  # See README doc for more info.
+  # custom:
+    # Each custom linter should have a unique name.
+     # example:
+      # The path to the plugin *.so. Can be absolute or local. Required for each custom linter
+      # path: /path/to/example.so
+      # The description of the linter. Optional, just for documentation purposes.
+      # description: This is an example usage of a plugin linter.
+      # Intended to point to the repo location of the linter. Optional, just for documentation purposes.
+      # original-url: github.com/golangci/example-linter
+
+linters:
+  #disable-all: true
+  #enable:
+  #  - megacheck
+  #  - govet
+  enable-all: true
+  disable:
+    - maligned
+    - prealloc
+    #- tagliatelle
+    #- wrapcheck
+    #- forcetypeassert
+    - goerr113
+    - gomnd
+    - wsl
+    - testpackage
+    - gochecknoglobals
+    - interfacer
+    - maligned
+    - scopelint
+    - gocritic
+    - typecheck
+#   presets:
+#     - bugs
+#     - unused
+  fast: false
+
+
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  exclude:
+    - abcdef
+    - tools/.*
+    - test/.*
+    - third_party/.*
+
+  # Excluding configuration per-path, per-linter, per-text and per-source
+  exclude-rules:
+    # Exclude some linters from running on tests files.
+    - linters:
+      - revive
+      path: (log/.*)\.go
+    - linters:
+      - wrapcheck
+      path: (cmd/.*|pkg/.*)\.go
+    - linters:
+      - typecheck
+      path: (pkg/storage/.*)\.go
+
+    - path: (cmd/.*|test/.*|tools/.*)\.go
+      linters:
+        - forbidigo
+    - path: (cmd/[a-z]*/.*|store/.*)\.go
+      linters:
+        - dupl
+    - linters:
+        - gocritic
+      text: (hugeParam:|rangeValCopy:)
+
+    - path: (cmd/[a-z]*/.*)\.go
+      linters:
+        - lll
+
+    - path: (validator/.*|code/.*|validator/.*)
+      linters:
+        - gochecknoinits
+    - path: (pkg/app/.*)\.go
+      linters:
+        - gocyclo
+        - errcheck
+        - dupl
+        - gosec
+
+    # Exclude known linters from partially hard-vendored code,
+    # which is impossible to exclude via "nolint" comments.
+    - path: internal/hmac/
+      text: "weak cryptographic primitive"
+      linters:
+        - gosec
+
+    # Exclude some staticcheck messages
+    - linters:
+        - staticcheck
+      text: "SA9003:"
+
+    # Exclude lll issues for long lines with go:generate
+    - linters:
+        - lll
+      source: "^//go:generate "
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: false
+
+  # The default value is false. If set to true exclude and exclude-rules
+  # regular expressions become case sensitive.
+  exclude-case-sensitive: false
+
+  # The list of ids of default excludes to include or disable. By default it's empty.
+  include:
+    - EXC0002 # disable excluding of issues about comments from golint
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-issues-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0
+
+  # Show only new issues: if there are unstaged changes or untracked files,
+  # only those changes are analyzed, else only changes in HEAD~ are analyzed.
+  # It's a super-useful option for integration of golangci-lint into existing
+  # large codebase. It's not practical to fix all existing issues at the moment
+  # of integration: much better don't allow issues in new code.
+  # Default is false.
+  new: false
+
+  # Show only new issues created after git revision `REV`
+  new-from-rev: REV
+
+  # Show only new issues created in git patch with set file path.
+  # new-from-patch: path/to/patch/file
+
+  # Fix found issues (if it's supported by the linter)
+  fix: true
+
+severity:
+  # Default value is empty string.
+  # Set the default severity for issues. If severity rules are defined and the issues
+  # do not match or no severity is provided to the rule this will be the default
+  # severity applied. Severities should match the supported severity names of the
+  # selected out format.
+  # - Code climate: https://docs.codeclimate.com/docs/issues#issue-severity
+  # -   Checkstyle: https://checkstyle.sourceforge.io/property_types.html#severity
+  # -       GitHub: https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message
+  default-severity: error
+
+  # The default value is false.
+  # If set to true severity-rules regular expressions become case sensitive.
+  case-sensitive: false
+
+  # Default value is empty list.
+  # When a list of severity rules are provided, severity information will be added to lint
+  # issues. Severity rules have the same filtering capability as exclude rules except you
+  # are allowed to specify one matcher per severity rule.
+  # Only affects out formats that support setting severity information.
+  rules:
+    - linters:
+      - dupl
+      severity: info
diff --git a/container/garray/garray_normal_str.go b/container/garray/garray_normal_str.go
index 71a6f2e36..0e178e156 100644
--- a/container/garray/garray_normal_str.go
+++ b/container/garray/garray_normal_str.go
@@ -407,9 +407,8 @@ func (a *StrArray) SubSlice(offset int, length ...int) []string {
 		s := make([]string, size)
 		copy(s, a.array[offset:])
 		return s
-	} else {
-		return a.array[offset:end]
 	}
+	return a.array[offset:end]
 }
 
 // Append is alias of PushRight,please See PushRight.
diff --git a/database/gdb/gdb.go b/database/gdb/gdb.go
index c67129f8a..be855644b 100644
--- a/database/gdb/gdb.go
+++ b/database/gdb/gdb.go
@@ -301,7 +301,7 @@ var (
 	// in the field name as it conflicts with "db.table.field" pattern in SOME situations.
 	regularFieldNameWithoutDotRegPattern = `^[\w\-]+$`
 
-	// tableFieldsMap caches the table information retrived from database.
+	// tableFieldsMap caches the table information retrieved from database.
 	tableFieldsMap = gmap.New(true)
 
 	// allDryRun sets dry-run feature for all database connections.
@@ -429,7 +429,7 @@ func getConfigNodeByGroup(group string, master bool) (*ConfigNode, error) {
 // Calculation algorithm brief:
 // 1. If we have 2 nodes, and their weights are both 1, then the weight range is [0, 199];
 // 2. Node1 weight range is [0, 99], and node2 weight range is [100, 199], ratio is 1:1;
-// 3. If the random number is 99, it then chooses and returns node1;
+// 3. If the random number is 99, it then chooses and returns node1;.
 func getConfigNodeByWeight(cg ConfigGroup) *ConfigNode {
 	if len(cg) < 2 {
 		return &cg[0]
diff --git a/database/gdb/gdb_core.go b/database/gdb/gdb_core.go
index 09c84ef75..c4c495f00 100644
--- a/database/gdb/gdb_core.go
+++ b/database/gdb/gdb_core.go
@@ -393,7 +393,7 @@ func (c *Core) DoInsert(ctx context.Context, link Link, table string, list List,
 		onDuplicateStr string        // onDuplicateStr is used in "ON DUPLICATE KEY UPDATE" statement.
 	)
 	// Handle the field names and placeholders.
-	for k, _ := range list[0] {
+	for k := range list[0] {
 		keys = append(keys, k)
 	}
 	// Prepare the batch result pointer.
@@ -448,9 +448,7 @@ func (c *Core) DoInsert(ctx context.Context, link Link, table string, list List,
 }
 
 func (c *Core) formatOnDuplicate(columns []string, option DoInsertOption) string {
-	var (
-		onDuplicateStr string
-	)
+	var onDuplicateStr string
 	if option.OnDuplicateStr != "" {
 		onDuplicateStr = option.OnDuplicateStr
 	} else if len(option.OnDuplicateMap) > 0 {
@@ -505,7 +503,7 @@ func (c *Core) formatOnDuplicate(columns []string, option DoInsertOption) string
 // "money>? AND name like ?", 99999, "vip_%"
 // "status IN (?)", g.Slice{1,2,3}
 // "age IN(?,?)", 18, 50
-// User{ Id : 1, UserName : "john"}
+// User{ Id : 1, UserName : "john"}.
 func (c *Core) Update(ctx context.Context, table string, data interface{}, condition interface{}, args ...interface{}) (sql.Result, error) {
 	return c.Model(table).Ctx(ctx).Data(data).Where(condition, args...).Update()
 }
@@ -596,7 +594,7 @@ func (c *Core) DoUpdate(ctx context.Context, link Link, table string, data inter
 // "money>? AND name like ?", 99999, "vip_%"
 // "status IN (?)", g.Slice{1,2,3}
 // "age IN(?,?)", 18, 50
-// User{ Id : 1, UserName : "john"}
+// User{ Id : 1, UserName : "john"}.
 func (c *Core) Delete(ctx context.Context, table string, condition interface{}, args ...interface{}) (result sql.Result, err error) {
 	return c.Model(table).Ctx(ctx).Where(condition, args...).Delete()
 }
diff --git a/database/gdb/gdb_core_structure.go b/database/gdb/gdb_core_structure.go
index 5cee01ce0..ebed7daa8 100644
--- a/database/gdb/gdb_core_structure.go
+++ b/database/gdb/gdb_core_structure.go
@@ -149,7 +149,7 @@ func (c *Core) convertFieldValueToLocalValue(fieldValue interface{}, fieldType s
 func (c *Core) mappingAndFilterData(schema, table string, data map[string]interface{}, filter bool) (map[string]interface{}, error) {
 	if fieldsMap, err := c.db.TableFields(c.GetCtx(), c.guessPrimaryTableName(table), schema); err == nil {
 		fieldsKeyMap := make(map[string]interface{}, len(fieldsMap))
-		for k, _ := range fieldsMap {
+		for k := range fieldsMap {
 			fieldsKeyMap[k] = nil
 		}
 		// Automatic data key to table field name mapping.
@@ -166,7 +166,7 @@ func (c *Core) mappingAndFilterData(schema, table string, data map[string]interf
 		// Data filtering.
 		// It deletes all key-value pairs that has incorrect field name.
 		if filter {
-			for dataKey, _ := range data {
+			for dataKey := range data {
 				if _, ok := fieldsMap[dataKey]; !ok {
 					delete(data, dataKey)
 				}
diff --git a/database/gdb/gdb_core_tracing.go b/database/gdb/gdb_core_tracing.go
index 004c37b5d..74f818161 100644
--- a/database/gdb/gdb_core_tracing.go
+++ b/database/gdb/gdb_core_tracing.go
@@ -11,12 +11,13 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/gogf/gf/v2"
-	"github.com/gogf/gf/v2/net/gtrace"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
+
+	"github.com/gogf/gf/v2"
+	"github.com/gogf/gf/v2/net/gtrace"
 )
 
 const (
diff --git a/database/gdb/gdb_core_transaction.go b/database/gdb/gdb_core_transaction.go
index 3f3d3199c..755803585 100644
--- a/database/gdb/gdb_core_transaction.go
+++ b/database/gdb/gdb_core_transaction.go
@@ -38,9 +38,7 @@ const (
 	transactionIdForLoggerCtx   = "TransactionId"
 )
 
-var (
-	transactionIdGenerator = gtype.NewUint64()
-)
+var transactionIdGenerator = gtype.NewUint64()
 
 // Begin starts and returns the transaction object.
 // You should call Commit or Rollback functions of the transaction object
@@ -99,9 +97,7 @@ func (c *Core) doBeginCtx(ctx context.Context) (*TX, error) {
 // Note that, you should not Commit or Rollback the transaction in function `f`
 // as it is automatically handled by this function.
 func (c *Core) Transaction(ctx context.Context, f func(ctx context.Context, tx *TX) error) (err error) {
-	var (
-		tx *TX
-	)
+	var tx *TX
 	if ctx == nil {
 		ctx = c.GetCtx()
 	}
@@ -537,7 +533,7 @@ func (tx *TX) Save(table string, data interface{}, batch ...int) (sql.Result, er
 // "money>? AND name like ?", 99999, "vip_%"
 // "status IN (?)", g.Slice{1,2,3}
 // "age IN(?,?)", 18, 50
-// User{ Id : 1, UserName : "john"}
+// User{ Id : 1, UserName : "john"}.
 func (tx *TX) Update(table string, data interface{}, condition interface{}, args ...interface{}) (sql.Result, error) {
 	return tx.Model(table).Ctx(tx.ctx).Data(data).Where(condition, args...).Update()
 }
@@ -552,7 +548,7 @@ func (tx *TX) Update(table string, data interface{}, condition interface{}, args
 // "money>? AND name like ?", 99999, "vip_%"
 // "status IN (?)", g.Slice{1,2,3}
 // "age IN(?,?)", 18, 50
-// User{ Id : 1, UserName : "john"}
+// User{ Id : 1, UserName : "john"}.
 func (tx *TX) Delete(table string, condition interface{}, args ...interface{}) (sql.Result, error) {
 	return tx.Model(table).Ctx(tx.ctx).Where(condition, args...).Delete()
 }
diff --git a/database/gdb/gdb_core_underlying.go b/database/gdb/gdb_core_underlying.go
index a6edac505..15035b4cc 100644
--- a/database/gdb/gdb_core_underlying.go
+++ b/database/gdb/gdb_core_underlying.go
@@ -128,9 +128,7 @@ func (c *Core) DoExec(ctx context.Context, link Link, sql string, args ...interf
 		result = new(SqlResult)
 	}
 	mTime2 := gtime.TimestampMilli()
-	var (
-		rowsAffected int64
-	)
+	var rowsAffected int64
 	if err == nil {
 		rowsAffected, err = result.RowsAffected()
 	}
diff --git a/database/gdb/gdb_driver_mysql.go b/database/gdb/gdb_driver_mysql.go
index 4d3d8cf35..b93c6c2f0 100644
--- a/database/gdb/gdb_driver_mysql.go
+++ b/database/gdb/gdb_driver_mysql.go
@@ -13,6 +13,7 @@ import (
 	"net/url"
 
 	_ "github.com/go-sql-driver/mysql"
+
 	"github.com/gogf/gf/v2/errors/gcode"
 	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/gogf/gf/v2/internal/intlog"
diff --git a/database/gdb/gdb_driver_oracle.go b/database/gdb/gdb_driver_oracle.go
index 44f8225b6..aced866f1 100644
--- a/database/gdb/gdb_driver_oracle.go
+++ b/database/gdb/gdb_driver_oracle.go
@@ -267,7 +267,7 @@ func (d *DriverOracle) DoInsert(ctx context.Context, link Link, table string, li
 		listLength  = len(list)
 		valueHolder = make([]string, 0)
 	)
-	for k, _ := range list[0] {
+	for k := range list[0] {
 		keys = append(keys, k)
 		valueHolder = append(valueHolder, "?")
 	}
diff --git a/database/gdb/gdb_func.go b/database/gdb/gdb_func.go
index d70ac3379..50edd7e36 100644
--- a/database/gdb/gdb_func.go
+++ b/database/gdb/gdb_func.go
@@ -282,7 +282,7 @@ func doQuoteWord(s, charLeft, charRight string) string {
 // "user u, user_detail ut"           => "`user` u,`user_detail` ut"
 // "user.user u, user.user_detail ut" => "`user`.`user` u,`user`.`user_detail` ut"
 // "u.id, u.name, u.age"              => "`u`.`id`,`u`.`name`,`u`.`age`"
-// "u.id asc"                         => "`u`.`id` asc"
+// "u.id asc"                         => "`u`.`id` asc".
 func doQuoteString(s, charLeft, charRight string) string {
 	array1 := gstr.SplitAndTrim(s, ",")
 	for k1, v1 := range array1 {
@@ -484,9 +484,9 @@ func formatWhere(db DB, in formatWhereInput) (newWhere string, newArgs []interfa
 
 	default:
 		// Usually a string.
-		var (
-			whereStr = gconv.String(in.Where)
-		)
+
+		whereStr := gconv.String(in.Where)
+
 		// Is `whereStr` a field name which composed as a key-value condition?
 		// Eg:
 		// Where("id", 1)
@@ -514,18 +514,16 @@ func formatWhere(db DB, in formatWhereInput) (newWhere string, newArgs []interfa
 		// Regular string and parameter place holder handling.
 		// Eg:
 		// Where("id in(?) and name=?", g.Slice{1,2,3}, "john")
-		var (
-			i = 0
-		)
+
+		i := 0
+
 		for {
 			if i >= len(in.Args) {
 				break
 			}
 			// Sub query, which is always used along with a string condition.
 			if model, ok := in.Args[i].(*Model); ok {
-				var (
-					index = -1
-				)
+				index := -1
 				whereStr, _ = gregex.ReplaceStringFunc(`(\?)`, whereStr, func(s string) string {
 					index++
 					if i+len(newArgs) == index {
@@ -836,9 +834,7 @@ func FormatSqlWithArgs(sql string, args []interface{}) string {
 				if v, ok := args[index].(Raw); ok {
 					return gconv.String(v)
 				}
-				var (
-					reflectInfo = utils.OriginValueAndKind(args[index])
-				)
+				reflectInfo := utils.OriginValueAndKind(args[index])
 				if reflectInfo.OriginKind == reflect.Ptr &&
 					(reflectInfo.OriginValue.IsNil() || !reflectInfo.OriginValue.IsValid()) {
 					return "null"
diff --git a/database/gdb/gdb_model_cache.go b/database/gdb/gdb_model_cache.go
index d18db684f..5704cd6ea 100644
--- a/database/gdb/gdb_model_cache.go
+++ b/database/gdb/gdb_model_cache.go
@@ -46,7 +46,7 @@ func (m *Model) Cache(option CacheOption) *Model {
 // cache feature is enabled.
 func (m *Model) checkAndRemoveCache() {
 	if m.cacheEnabled && m.cacheOption.Duration < 0 && len(m.cacheOption.Name) > 0 {
-		var ctx = m.GetCtx()
+		ctx := m.GetCtx()
 		_, err := m.db.GetCache().Remove(ctx, m.cacheOption.Name)
 		if err != nil {
 			intlog.Error(ctx, err)
diff --git a/database/gdb/gdb_model_condition.go b/database/gdb/gdb_model_condition.go
index 3aeb96d94..724a412f7 100644
--- a/database/gdb/gdb_model_condition.go
+++ b/database/gdb/gdb_model_condition.go
@@ -23,7 +23,7 @@ import (
 // Where("uid", 1).Where("name", "john")
 // Where("status IN (?)", g.Slice{1,2,3})
 // Where("age IN(?,?)", 18, 50)
-// Where(User{ Id : 1, UserName : "john"})
+// Where(User{ Id : 1, UserName : "john"}).
 func (m *Model) Where(where interface{}, args ...interface{}) *Model {
 	model := m.getModel()
 	if model.whereHolder == nil {
@@ -315,9 +315,7 @@ func (m *Model) Page(page, limit int) *Model {
 //
 // The parameter `limit1` specifies whether limits querying only one record if m.limit is not set.
 func (m *Model) formatCondition(limit1 bool, isCountStatement bool) (conditionWhere string, conditionExtra string, conditionArgs []interface{}) {
-	var (
-		autoPrefix = ""
-	)
+	autoPrefix := ""
 	if gstr.Contains(m.tables, " JOIN ") {
 		autoPrefix = m.db.GetCore().QuoteWord(m.tablesInit)
 	}
diff --git a/database/gdb/gdb_model_fields.go b/database/gdb/gdb_model_fields.go
index 49dbe1e24..ff03f8b3e 100644
--- a/database/gdb/gdb_model_fields.go
+++ b/database/gdb/gdb_model_fields.go
@@ -21,7 +21,7 @@ import (
 // Fields("id", "name", "age")
 // Fields([]string{"id", "name", "age"})
 // Fields(map[string]interface{}{"id":1, "name":"john", "age":18})
-// Fields(User{ Id: 1, Name: "john", Age: 18})
+// Fields(User{ Id: 1, Name: "john", Age: 18}).
 func (m *Model) Fields(fieldNamesOrMapStruct ...interface{}) *Model {
 	length := len(fieldNamesOrMapStruct)
 	if length == 0 {
diff --git a/database/gdb/gdb_model_insert.go b/database/gdb/gdb_model_insert.go
index 35e58e9d6..6ec74ba70 100644
--- a/database/gdb/gdb_model_insert.go
+++ b/database/gdb/gdb_model_insert.go
@@ -36,7 +36,7 @@ func (m *Model) Batch(batch int) *Model {
 // Data("uid", 10000)
 // Data("uid=? AND name=?", 10000, "john")
 // Data(g.Map{"uid": 10000, "name":"john"})
-// Data(g.Slice{g.Map{"uid": 10000, "name":"john"}, g.Map{"uid": 20000, "name":"smith"})
+// Data(g.Slice{g.Map{"uid": 10000, "name":"john"}, g.Map{"uid": 20000, "name":"smith"}).
 func (m *Model) Data(data ...interface{}) *Model {
 	model := m.getModel()
 	if len(data) > 1 {
@@ -69,9 +69,7 @@ func (m *Model) Data(data ...interface{}) *Model {
 			model.data = gutil.MapCopy(value)
 
 		default:
-			var (
-				reflectInfo = utils.OriginValueAndKind(value)
-			)
+			reflectInfo := utils.OriginValueAndKind(value)
 			switch reflectInfo.OriginKind {
 			case reflect.Slice, reflect.Array:
 				if reflectInfo.OriginValue.Len() > 0 {
@@ -131,7 +129,7 @@ func (m *Model) Data(data ...interface{}) *Model {
 // })
 // OnDuplicate(g.Map{
 //     "nickname": "passport",
-// })
+// }).
 func (m *Model) OnDuplicate(onDuplicate ...interface{}) *Model {
 	model := m.getModel()
 	if len(onDuplicate) > 1 {
@@ -151,7 +149,7 @@ func (m *Model) OnDuplicate(onDuplicate ...interface{}) *Model {
 // OnDuplicateEx(g.Map{
 //     "passport": "",
 //     "password": "",
-// })
+// }).
 func (m *Model) OnDuplicateEx(onDuplicateEx ...interface{}) *Model {
 	model := m.getModel()
 	if len(onDuplicateEx) > 1 {
@@ -256,9 +254,7 @@ func (m *Model) doInsertWithOption(insertOption int) (result sql.Result, err err
 		list = List{ConvertDataForTableRecord(value)}
 
 	default:
-		var (
-			reflectInfo = utils.OriginValueAndKind(newData)
-		)
+		reflectInfo := utils.OriginValueAndKind(newData)
 		switch reflectInfo.OriginKind {
 		// If it's slice type, it then converts it to List type.
 		case reflect.Slice, reflect.Array:
@@ -272,9 +268,7 @@ func (m *Model) doInsertWithOption(insertOption int) (result sql.Result, err err
 
 		case reflect.Struct:
 			if v, ok := value.(iInterfaces); ok {
-				var (
-					array = v.Interfaces()
-				)
+				array := v.Interfaces()
 				list = make(List, len(array))
 				for i := 0; i < len(array); i++ {
 					list[i] = ConvertDataForTableRecord(array[i])
@@ -310,7 +304,7 @@ func (m *Model) doInsertWithOption(insertOption int) (result sql.Result, err err
 	}
 	// Format DoInsertOption, especially for "ON DUPLICATE KEY UPDATE" statement.
 	columnNames := make([]string, 0, len(list[0]))
-	for k, _ := range list[0] {
+	for k := range list[0] {
 		columnNames = append(columnNames, k)
 	}
 	doInsertOption, err := m.formatDoInsertOption(insertOption, columnNames)
@@ -331,18 +325,14 @@ func (m *Model) formatDoInsertOption(insertOption int, columnNames []string) (op
 		if err != nil {
 			return option, err
 		}
-		var (
-			onDuplicateExKeySet = gset.NewStrSetFrom(onDuplicateExKeys)
-		)
+		onDuplicateExKeySet := gset.NewStrSetFrom(onDuplicateExKeys)
 		if m.onDuplicate != nil {
 			switch m.onDuplicate.(type) {
 			case Raw, *Raw:
 				option.OnDuplicateStr = gconv.String(m.onDuplicate)
 
 			default:
-				var (
-					reflectInfo = utils.OriginValueAndKind(m.onDuplicate)
-				)
+				reflectInfo := utils.OriginValueAndKind(m.onDuplicate)
 				switch reflectInfo.OriginKind {
 				case reflect.String:
 					option.OnDuplicateMap = make(map[string]interface{})
@@ -397,9 +387,7 @@ func (m *Model) formatOnDuplicateExKeys(onDuplicateEx interface{}) ([]string, er
 		return nil, nil
 	}
 
-	var (
-		reflectInfo = utils.OriginValueAndKind(onDuplicateEx)
-	)
+	reflectInfo := utils.OriginValueAndKind(onDuplicateEx)
 	switch reflectInfo.OriginKind {
 	case reflect.String:
 		return gstr.SplitAndTrim(reflectInfo.OriginValue.String(), ","), nil
diff --git a/database/gdb/gdb_model_join.go b/database/gdb/gdb_model_join.go
index 2b3410e78..237397b5f 100644
--- a/database/gdb/gdb_model_join.go
+++ b/database/gdb/gdb_model_join.go
@@ -30,7 +30,7 @@ func isSubQuery(s string) bool {
 // Eg:
 // Model("user").LeftJoin("user_detail", "user_detail.uid=user.uid")
 // Model("user", "u").LeftJoin("user_detail", "ud", "ud.uid=u.uid")
-// Model("user", "u").LeftJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid")
+// Model("user", "u").LeftJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid").
 func (m *Model) LeftJoin(table ...string) *Model {
 	return m.doJoin("LEFT", table...)
 }
@@ -42,7 +42,7 @@ func (m *Model) LeftJoin(table ...string) *Model {
 // Eg:
 // Model("user").RightJoin("user_detail", "user_detail.uid=user.uid")
 // Model("user", "u").RightJoin("user_detail", "ud", "ud.uid=u.uid")
-// Model("user", "u").RightJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid")
+// Model("user", "u").RightJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid").
 func (m *Model) RightJoin(table ...string) *Model {
 	return m.doJoin("RIGHT", table...)
 }
@@ -54,7 +54,7 @@ func (m *Model) RightJoin(table ...string) *Model {
 // Eg:
 // Model("user").InnerJoin("user_detail", "user_detail.uid=user.uid")
 // Model("user", "u").InnerJoin("user_detail", "ud", "ud.uid=u.uid")
-// Model("user", "u").InnerJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid")
+// Model("user", "u").InnerJoin("SELECT xxx FROM xxx AS a", "a.uid=u.uid").
 func (m *Model) InnerJoin(table ...string) *Model {
 	return m.doJoin("INNER", table...)
 }
@@ -63,7 +63,7 @@ func (m *Model) InnerJoin(table ...string) *Model {
 //
 // Eg:
 // Model("order").LeftJoinOnField("user", "user_id")
-// Model("order").LeftJoinOnField("product", "product_id")
+// Model("order").LeftJoinOnField("product", "product_id").
 func (m *Model) LeftJoinOnField(table, field string) *Model {
 	return m.doJoin("LEFT", table, fmt.Sprintf(
 		`%s.%s=%s.%s`,
@@ -78,7 +78,7 @@ func (m *Model) LeftJoinOnField(table, field string) *Model {
 //
 // Eg:
 // Model("order").InnerJoinOnField("user", "user_id")
-// Model("order").InnerJoinOnField("product", "product_id")
+// Model("order").InnerJoinOnField("product", "product_id").
 func (m *Model) RightJoinOnField(table, field string) *Model {
 	return m.doJoin("RIGHT", table, fmt.Sprintf(
 		`%s.%s=%s.%s`,
@@ -93,7 +93,7 @@ func (m *Model) RightJoinOnField(table, field string) *Model {
 //
 // Eg:
 // Model("order").InnerJoinOnField("user", "user_id")
-// Model("order").InnerJoinOnField("product", "product_id")
+// Model("order").InnerJoinOnField("product", "product_id").
 func (m *Model) InnerJoinOnField(table, field string) *Model {
 	return m.doJoin("INNER", table, fmt.Sprintf(
 		`%s.%s=%s.%s`,
diff --git a/database/gdb/gdb_model_option.go b/database/gdb/gdb_model_option.go
index e3947c627..f7520b3e9 100644
--- a/database/gdb/gdb_model_option.go
+++ b/database/gdb/gdb_model_option.go
@@ -32,7 +32,7 @@ func (m *Model) OmitEmpty() *Model {
 // Where("id", []int{}).All()             -> SELECT xxx FROM xxx WHERE 0=1
 // Where("name", "").All()                -> SELECT xxx FROM xxx WHERE `name`=''
 // OmitEmpty().Where("id", []int{}).All() -> SELECT xxx FROM xxx
-// OmitEmpty().("name", "").All()         -> SELECT xxx FROM xxx
+// OmitEmpty().("name", "").All()         -> SELECT xxx FROM xxx.
 func (m *Model) OmitEmptyWhere() *Model {
 	model := m.getModel()
 	model.option = model.option | optionOmitEmptyWhere
diff --git a/database/gdb/gdb_model_order_group.go b/database/gdb/gdb_model_order_group.go
index e212bc070..bf8fbbc01 100644
--- a/database/gdb/gdb_model_order_group.go
+++ b/database/gdb/gdb_model_order_group.go
@@ -13,7 +13,7 @@ import "strings"
 // Eg:
 // Order("id desc")
 // Order("id", "desc")
-// Order("id desc,name asc")
+// Order("id desc,name asc").
 func (m *Model) Order(orderBy ...string) *Model {
 	if len(orderBy) == 0 {
 		return m
diff --git a/database/gdb/gdb_model_select.go b/database/gdb/gdb_model_select.go
index b342852a0..dd1061b28 100644
--- a/database/gdb/gdb_model_select.go
+++ b/database/gdb/gdb_model_select.go
@@ -206,7 +206,7 @@ func (m *Model) Array(fieldsAndWhere ...interface{}) ([]Value, error) {
 // err  := db.Model("user").Where("id", 1).Scan(user)
 //
 // user := (*User)(nil)
-// err  := db.Model("user").Where("id", 1).Scan(&user)
+// err  := db.Model("user").Where("id", 1).Scan(&user).
 func (m *Model) doStruct(pointer interface{}, where ...interface{}) error {
 	model := m
 	// Auto selecting fields by struct attributes.
@@ -242,7 +242,7 @@ func (m *Model) doStruct(pointer interface{}, where ...interface{}) error {
 // err   := db.Model("user").Scan(&users)
 //
 // users := ([]*User)(nil)
-// err   := db.Model("user").Scan(&users)
+// err   := db.Model("user").Scan(&users).
 func (m *Model) doStructs(pointer interface{}, where ...interface{}) error {
 	model := m
 	// Auto selecting fields by struct attributes.
@@ -291,11 +291,9 @@ func (m *Model) doStructs(pointer interface{}, where ...interface{}) error {
 // err   := db.Model("user").Scan(&users)
 //
 // users := ([]*User)(nil)
-// err   := db.Model("user").Scan(&users)
+// err   := db.Model("user").Scan(&users).
 func (m *Model) Scan(pointer interface{}, where ...interface{}) error {
-	var (
-		reflectInfo = utils.OriginTypeAndKind(pointer)
-	)
+	reflectInfo := utils.OriginTypeAndKind(pointer)
 	if reflectInfo.InputKind != reflect.Ptr {
 		return gerror.NewCode(
 			gcode.CodeInvalidParameter,
diff --git a/database/gdb/gdb_model_time.go b/database/gdb/gdb_model_time.go
index f54445737..e1120fe42 100644
--- a/database/gdb/gdb_model_time.go
+++ b/database/gdb/gdb_model_time.go
@@ -113,7 +113,7 @@ func (m *Model) getSoftFieldName(table string, keys []string) (field string) {
 // "user u, user_detail ud"
 // "user u LEFT JOIN user_detail ud ON(ud.uid=u.uid)"
 // "user LEFT JOIN user_detail ON(user_detail.uid=user.uid)"
-// "user u LEFT JOIN user_detail ud ON(ud.uid=u.uid) LEFT JOIN user_stats us ON(us.uid=u.uid)"
+// "user u LEFT JOIN user_detail ud ON(ud.uid=u.uid) LEFT JOIN user_stats us ON(us.uid=u.uid)".
 func (m *Model) getConditionForSoftDeleting() string {
 	if m.unscoped {
 		return ""
diff --git a/database/gdb/gdb_model_update.go b/database/gdb/gdb_model_update.go
index 86d4a5a07..da04b436b 100644
--- a/database/gdb/gdb_model_update.go
+++ b/database/gdb/gdb_model_update.go
@@ -49,9 +49,7 @@ func (m *Model) Update(dataAndWhere ...interface{}) (result sql.Result, err erro
 	)
 	// Automatically update the record updating time.
 	if !m.unscoped && fieldNameUpdate != "" {
-		var (
-			reflectInfo = utils.OriginTypeAndKind(m.data)
-		)
+		reflectInfo := utils.OriginTypeAndKind(m.data)
 		switch reflectInfo.OriginKind {
 		case reflect.Map, reflect.Struct:
 			dataMap := ConvertDataForTableRecord(m.data)
diff --git a/database/gdb/gdb_model_utility.go b/database/gdb/gdb_model_utility.go
index d20241d5a..2df3df2c5 100644
--- a/database/gdb/gdb_model_utility.go
+++ b/database/gdb/gdb_model_utility.go
@@ -46,7 +46,7 @@ func (m *Model) getModel() *Model {
 // mappingAndFilterToTableFields mappings and changes given field name to really table field name.
 // Eg:
 // ID        -> id
-// NICK_Name -> nickname
+// NICK_Name -> nickname.
 func (m *Model) mappingAndFilterToTableFields(fields []string, filter bool) []string {
 	fieldsMap, err := m.TableFields(m.tablesInit)
 	if err != nil || len(fieldsMap) == 0 {
@@ -57,7 +57,7 @@ func (m *Model) mappingAndFilterToTableFields(fields []string, filter bool) []st
 		outputFieldsArray = make([]string, 0, len(inputFieldsArray))
 	)
 	fieldsKeyMap := make(map[string]interface{}, len(fieldsMap))
-	for k, _ := range fieldsMap {
+	for k := range fieldsMap {
 		fieldsKeyMap[k] = nil
 	}
 	for _, field := range inputFieldsArray {
@@ -87,9 +87,7 @@ func (m *Model) filterDataForInsertOrUpdate(data interface{}) (interface{}, erro
 	var err error
 	switch value := data.(type) {
 	case List:
-		var (
-			omitEmpty bool
-		)
+		var omitEmpty bool
 		if m.option&optionOmitNilDataList > 0 {
 			omitEmpty = true
 		}
diff --git a/database/gdb/gdb_model_with.go b/database/gdb/gdb_model_with.go
index 0e103077e..8be613401 100644
--- a/database/gdb/gdb_model_with.go
+++ b/database/gdb/gdb_model_with.go
@@ -229,7 +229,7 @@ func (m *Model) doWithScanStructs(pointer interface{}) error {
 			relatedTargetValue interface{}
 		)
 		// Find the value slice of related attribute from `pointer`.
-		for attributeName, _ := range currentStructFieldMap {
+		for attributeName := range currentStructFieldMap {
 			if utils.EqualFoldWithoutChars(attributeName, relatedTargetName) {
 				relatedTargetValue = ListItemValuesUnique(pointer, attributeName)
 				break
diff --git a/database/gdb/gdb_schema.go b/database/gdb/gdb_schema.go
index d1c3242d3..4cf7c496c 100644
--- a/database/gdb/gdb_schema.go
+++ b/database/gdb/gdb_schema.go
@@ -32,7 +32,7 @@ func (tx *TX) Schema(schema string) *Schema {
 
 // Model creates and returns a new ORM model.
 // The parameter `tables` can be more than one table names, like :
-// "user", "user u", "user, user_detail", "user u, user_detail ud"
+// "user", "user u", "user, user_detail", "user u, user_detail ud".
 func (s *Schema) Model(table string) *Model {
 	var m *Model
 	if s.tx != nil {
diff --git a/database/gdb/gdb_type_result.go b/database/gdb/gdb_type_result.go
index 4b6306200..062381a48 100644
--- a/database/gdb/gdb_type_result.go
+++ b/database/gdb/gdb_type_result.go
@@ -83,7 +83,7 @@ func (r Result) Array(field ...string) []Value {
 	if len(field) > 0 && field[0] != "" {
 		key = field[0]
 	} else {
-		for k, _ := range r[0] {
+		for k := range r[0] {
 			key = k
 			break
 		}
diff --git a/database/gdb/gdb_type_result_scanlist.go b/database/gdb/gdb_type_result_scanlist.go
index 8195137a3..95d0712ca 100644
--- a/database/gdb/gdb_type_result_scanlist.go
+++ b/database/gdb/gdb_type_result_scanlist.go
@@ -290,12 +290,10 @@ func doScanList(model *Model, result Result, structSlicePointer interface{}, bin
 		if relationFields != "" && !relationBindToFieldNameChecked {
 			relationFromAttrField = relationFromAttrValue.FieldByName(relationBindToFieldName)
 			if !relationFromAttrField.IsValid() {
-				var (
-					filedMap, _ = structs.FieldMap(structs.FieldMapInput{
-						Pointer:         relationFromAttrValue,
-						RecursiveOption: structs.RecursiveOptionEmbeddedNoTag,
-					})
-				)
+				filedMap, _ := structs.FieldMap(structs.FieldMapInput{
+					Pointer:         relationFromAttrValue,
+					RecursiveOption: structs.RecursiveOptionEmbeddedNoTag,
+				})
 				if key, _ := gutil.MapPossibleItemByKey(gconv.Map(filedMap), relationBindToFieldName); key == "" {
 					return gerror.NewCodef(
 						gcode.CodeInvalidParameter,
diff --git a/database/gdb/gdb_z_mysql_basic_test.go b/database/gdb/gdb_z_mysql_basic_test.go
index 61d116752..29fc7679f 100644
--- a/database/gdb/gdb_z_mysql_basic_test.go
+++ b/database/gdb/gdb_z_mysql_basic_test.go
@@ -10,6 +10,7 @@ import (
 	"testing"
 
 	"github.com/go-sql-driver/mysql"
+
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/test/gtest"
 )
diff --git a/database/gdb/gdb_z_mysql_method_test.go b/database/gdb/gdb_z_mysql_method_test.go
index 49795cb8b..b16a91f55 100644
--- a/database/gdb/gdb_z_mysql_method_test.go
+++ b/database/gdb/gdb_z_mysql_method_test.go
@@ -45,7 +45,6 @@ func Test_DB_Query(t *testing.T) {
 		_, err = db.Query(ctx, "ERROR")
 		t.AssertNE(err, nil)
 	})
-
 }
 
 func Test_DB_Exec(t *testing.T) {
@@ -56,7 +55,6 @@ func Test_DB_Exec(t *testing.T) {
 		_, err = db.Exec(ctx, "ERROR")
 		t.AssertNE(err, nil)
 	})
-
 }
 
 func Test_DB_Prepare(t *testing.T) {
@@ -391,7 +389,6 @@ func Test_DB_BatchInsert(t *testing.T) {
 		n, _ := result.RowsAffected()
 		t.Assert(n, 1)
 	})
-
 }
 
 func Test_DB_BatchInsert_Struct(t *testing.T) {
@@ -924,12 +921,10 @@ func Test_DB_ToXml(t *testing.T) {
 		} else {
 			gtest.Fatal("FAIL")
 		}
-
 	})
 }
 
 func Test_DB_ToStringMap(t *testing.T) {
-
 	table := createInitTable()
 	defer dropTable(table)
 	_, err := db.Update(ctx, table, "create_time='2010-10-10 00:00:01'", "id=?", 1)
@@ -965,7 +960,6 @@ func Test_DB_ToStringMap(t *testing.T) {
 }
 
 func Test_DB_ToIntMap(t *testing.T) {
-
 	table := createInitTable()
 	defer dropTable(table)
 	_, err := db.Update(ctx, table, "create_time='2010-10-10 00:00:01'", "id=?", 1)
@@ -1034,7 +1028,6 @@ func Test_DB_ToUintMap(t *testing.T) {
 		t.Assert(t_users[0].Password, resultUintMap[uint(id)]["password"])
 		t.Assert(t_users[0].NickName, resultUintMap[uint(id)]["nickname"])
 		t.Assert(t_users[0].CreateTime, resultUintMap[uint(id)]["create_time"])
-
 	})
 }
 
@@ -1072,7 +1065,6 @@ func Test_DB_ToStringRecord(t *testing.T) {
 		t.Assert(t_users[0].Password, resultStringRecord[ids]["password"].String())
 		t.Assert(t_users[0].NickName, resultStringRecord[ids]["nickname"].String())
 		t.Assert(t_users[0].CreateTime, resultStringRecord[ids]["create_time"].String())
-
 	})
 }
 
@@ -1109,7 +1101,6 @@ func Test_DB_ToIntRecord(t *testing.T) {
 		t.Assert(t_users[0].Password, resultIntRecord[id]["password"].String())
 		t.Assert(t_users[0].NickName, resultIntRecord[id]["nickname"].String())
 		t.Assert(t_users[0].CreateTime, resultIntRecord[id]["create_time"].String())
-
 	})
 }
 
@@ -1301,7 +1292,6 @@ func Test_DB_Prefix(t *testing.T) {
 		t.Assert(e, nil)
 		t.Assert(n, TableSize)
 	})
-
 }
 
 func Test_Model_InnerJoin(t *testing.T) {
@@ -1420,7 +1410,7 @@ func Test_Empty_Slice_Argument(t *testing.T) {
 	})
 }
 
-// update counter test
+// update counter test.
 func Test_DB_UpdateCounter(t *testing.T) {
 	tableName := "gf_update_counter_test_" + gtime.TimestampNanoStr()
 	_, err := db.Exec(ctx, fmt.Sprintf(`
diff --git a/database/gdb/gdb_z_mysql_model_basic_test.go b/database/gdb/gdb_z_mysql_model_basic_test.go
index 86b81d756..0e242397f 100644
--- a/database/gdb/gdb_z_mysql_model_basic_test.go
+++ b/database/gdb/gdb_z_mysql_model_basic_test.go
@@ -970,7 +970,6 @@ func Test_Model_StructsWithOrmTag(t *testing.T) {
 		t.Assert(one["passport"], "user_2")
 		t.Assert(one["password"], "pass_2")
 	})
-
 }
 
 func Test_Model_Scan(t *testing.T) {
@@ -1984,7 +1983,6 @@ func Test_Model_Option_List(t *testing.T) {
 		t.Assert(list[1]["nickname"].String(), "")
 		t.Assert(list[1]["passport"].String(), "")
 		t.Assert(list[1]["password"].String(), "2")
-
 	})
 }
 
@@ -2827,6 +2825,7 @@ func Test_Model_Fields_Struct(t *testing.T) {
 		t.Assert(one["nickname"], "name_2")
 	})
 }
+
 func Test_Model_NullField(t *testing.T) {
 	table := createTable()
 	defer dropTable(table)
@@ -3058,7 +3057,7 @@ func Test_Model_Fields_Map_Struct(t *testing.T) {
 			PASSPORT string
 			XXX_TYPE int
 		}
-		var a = A{}
+		a := A{}
 		err := db.Model(table).Fields(a).Where("id", 1).Scan(&a)
 		t.AssertNil(err)
 		t.Assert(a.ID, 1)
diff --git a/database/gdb/gdb_z_mysql_model_struct_test.go b/database/gdb/gdb_z_mysql_model_struct_test.go
index aa54bcf3e..78dda93d5 100644
--- a/database/gdb/gdb_z_mysql_model_struct_test.go
+++ b/database/gdb/gdb_z_mysql_model_struct_test.go
@@ -99,7 +99,6 @@ func Test_Model_Embedded_MapToStruct(t *testing.T) {
 		t.Assert(user.Password, data["password"])
 		t.Assert(user.Nickname, data["nickname"])
 		t.Assert(user.CreateTime, data["create_time"])
-
 	})
 }
 
@@ -550,9 +549,7 @@ func Test_Scan_JsonAttributes(t *testing.T) {
 		Passport string
 	}
 
-	var (
-		table = "jfy_gift"
-	)
+	table := "jfy_gift"
 	array := gstr.SplitAndTrim(gtest.TestDataContent(`issue1380.sql`), ";")
 	for _, v := range array {
 		if _, err := db.Exec(ctx, v); err != nil {
diff --git a/database/gdb/gdb_z_mysql_model_where_test.go b/database/gdb/gdb_z_mysql_model_where_test.go
index 044083ad7..55cc3bd7f 100644
--- a/database/gdb/gdb_z_mysql_model_where_test.go
+++ b/database/gdb/gdb_z_mysql_model_where_test.go
@@ -66,6 +66,5 @@ func Test_Model_WhereOrPrefix(t *testing.T) {
 		t.Assert(r[1]["id"], "2")
 		t.Assert(r[2]["id"], "8")
 		t.Assert(r[3]["id"], "9")
-
 	})
 }
diff --git a/database/gdb/gdb_z_mysql_time_maintain_test.go b/database/gdb/gdb_z_mysql_time_maintain_test.go
index 8621dc4e9..77ff68a21 100644
--- a/database/gdb/gdb_z_mysql_time_maintain_test.go
+++ b/database/gdb/gdb_z_mysql_time_maintain_test.go
@@ -16,7 +16,7 @@ import (
 	"github.com/gogf/gf/v2/test/gtest"
 )
 
-// CreateAt/UpdateAt/DeleteAt
+// CreateAt/UpdateAt/DeleteAt.
 func Test_SoftCreateUpdateDeleteTime(t *testing.T) {
 	table := "time_test_table_" + gtime.TimestampNanoStr()
 	if _, err := db.Exec(ctx, fmt.Sprintf(`
@@ -150,7 +150,7 @@ CREATE TABLE %s (
 	})
 }
 
-// CreatedAt/UpdatedAt/DeletedAt
+// CreatedAt/UpdatedAt/DeletedAt.
 func Test_SoftCreatedUpdatedDeletedTime_Map(t *testing.T) {
 	table := "time_test_table_" + gtime.TimestampNanoStr()
 	if _, err := db.Exec(ctx, fmt.Sprintf(`
@@ -284,7 +284,7 @@ CREATE TABLE %s (
 	})
 }
 
-// CreatedAt/UpdatedAt/DeletedAt
+// CreatedAt/UpdatedAt/DeletedAt.
 func Test_SoftCreatedUpdatedDeletedTime_Struct(t *testing.T) {
 	table := "time_test_table_" + gtime.TimestampNanoStr()
 	if _, err := db.Exec(ctx, fmt.Sprintf(`
diff --git a/database/gdb/gdb_z_mysql_transaction_test.go b/database/gdb/gdb_z_mysql_transaction_test.go
index d0da6fd6b..41a7d5fc1 100644
--- a/database/gdb/gdb_z_mysql_transaction_test.go
+++ b/database/gdb/gdb_z_mysql_transaction_test.go
@@ -144,7 +144,6 @@ func Test_TX_Insert(t *testing.T) {
 		if err := tx.Commit(); err != nil {
 			gtest.Error(err)
 		}
-
 	})
 }
 
@@ -415,7 +414,6 @@ func Test_TX_GetValue(t *testing.T) {
 			gtest.Error(err)
 		}
 	})
-
 }
 
 func Test_TX_GetCount(t *testing.T) {
diff --git a/database/gredis/gredis_adapter_goredis.go b/database/gredis/gredis_adapter_goredis.go
index 4081b7037..ed5c3feae 100644
--- a/database/gredis/gredis_adapter_goredis.go
+++ b/database/gredis/gredis_adapter_goredis.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/go-redis/redis/v8"
+
 	"github.com/gogf/gf/v2/text/gstr"
 )
 
diff --git a/database/gredis/gredis_adapter_goredis_conn.go b/database/gredis/gredis_adapter_goredis_conn.go
index 36e32223f..a4a1bd243 100644
--- a/database/gredis/gredis_adapter_goredis_conn.go
+++ b/database/gredis/gredis_adapter_goredis_conn.go
@@ -10,6 +10,7 @@ import (
 	"context"
 
 	"github.com/go-redis/redis/v8"
+
 	"github.com/gogf/gf/v2/container/gvar"
 	"github.com/gogf/gf/v2/text/gstr"
 	"github.com/gogf/gf/v2/util/gconv"
diff --git a/database/gredis/gredis_redis_tracing.go b/database/gredis/gredis_redis_tracing.go
index b2d41c75b..2fd5fb2b3 100644
--- a/database/gredis/gredis_redis_tracing.go
+++ b/database/gredis/gredis_redis_tracing.go
@@ -10,13 +10,14 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/gogf/gf/v2"
-	"github.com/gogf/gf/v2/internal/json"
-	"github.com/gogf/gf/v2/net/gtrace"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
+
+	"github.com/gogf/gf/v2"
+	"github.com/gogf/gf/v2/internal/json"
+	"github.com/gogf/gf/v2/net/gtrace"
 )
 
 // tracingItem holds the information for redis tracing.
diff --git a/encoding/gbinary/gbinary_bit.go b/encoding/gbinary/gbinary_bit.go
index e382fecea..3e93dcab6 100644
--- a/encoding/gbinary/gbinary_bit.go
+++ b/encoding/gbinary/gbinary_bit.go
@@ -8,19 +8,16 @@ package gbinary
 
 // NOTE: THIS IS AN EXPERIMENTAL FEATURE!
 
-// Bit Binary bit (0 | 1) 二进制位(0|1)
+// Bit Binary bit (0 | 1)
 type Bit int8
 
-// EncodeBits .
-// Default coding
-// 默认编码
+// EncodeBits does encode bits return bits Default coding
 func EncodeBits(bits []Bit, i int, l int) []Bit {
 	return EncodeBitsWithUint(bits, uint(i), l)
 }
 
-// EncodeBitsWithUint .
-// Merge ui bitwise into the bits array and occupy the length length bits (Note: binary 0 | 1 digits are stored in the uis array)
-// 将ui按位合并到bits数组中，并占length长度位(注意：uis数组中存放的是二进制的0|1数字)
+// EncodeBitsWithUint . Merge ui bitwise into the bits array and occupy the length bits
+// (Note: binary 0 | 1 digits are stored in the uis array)
 func EncodeBitsWithUint(bits []Bit, ui uint, l int) []Bit {
 	a := make([]Bit, l)
 	for i := l - 1; i >= 0; i-- {
@@ -33,9 +30,8 @@ func EncodeBitsWithUint(bits []Bit, ui uint, l int) []Bit {
 	return a
 }
 
-// EncodeBitsToBytes .
+// EncodeBitsToBytes . does encode bits to bytes
 // Convert bits to [] byte, encode from left to right, and add less than 1 byte from 0 to the end.
-// 将bits转换为[]byte，从左至右进行编码，不足1 byte按0往末尾补充
 func EncodeBitsToBytes(bits []Bit) []byte {
 	if len(bits)%8 != 0 {
 		for i := 0; i < len(bits)%8; i++ {
@@ -49,9 +45,8 @@ func EncodeBitsToBytes(bits []Bit) []byte {
 	return b
 }
 
-// DecodeBits .
+// DecodeBits .does decode bits to int
 // Resolve to int
-// 解析为int
 func DecodeBits(bits []Bit) int {
 	v := 0
 	for _, i := range bits {
@@ -60,9 +55,7 @@ func DecodeBits(bits []Bit) int {
 	return v
 }
 
-// DecodeBitsToUint .
-// Resolve to uint
-// 解析为uint
+// DecodeBitsToUint .Resolve to uint
 func DecodeBitsToUint(bits []Bit) uint {
 	v := uint(0)
 	for _, i := range bits {
@@ -71,9 +64,7 @@ func DecodeBitsToUint(bits []Bit) uint {
 	return v
 }
 
-// DecodeBytesToBits .
-// Parsing [] byte into character array [] uint8
-// 解析[]byte为字位数组[]uint8
+// DecodeBytesToBits .Parsing [] byte into character array [] uint8
 func DecodeBytesToBits(bs []byte) []Bit {
 	bits := make([]Bit, 0)
 	for _, b := range bs {
diff --git a/encoding/gcharset/gcharset.go b/encoding/gcharset/gcharset.go
index 534f84aa3..bd283bc56 100644
--- a/encoding/gcharset/gcharset.go
+++ b/encoding/gcharset/gcharset.go
@@ -24,12 +24,13 @@ import (
 	"context"
 	"io/ioutil"
 
-	"github.com/gogf/gf/v2/errors/gcode"
-	"github.com/gogf/gf/v2/errors/gerror"
-	"github.com/gogf/gf/v2/internal/intlog"
 	"golang.org/x/text/encoding"
 	"golang.org/x/text/encoding/ianaindex"
 	"golang.org/x/text/transform"
+
+	"github.com/gogf/gf/v2/errors/gcode"
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/internal/intlog"
 )
 
 var (
diff --git a/encoding/gtoml/gtoml.go b/encoding/gtoml/gtoml.go
index 23fc52af0..fe636f610 100644
--- a/encoding/gtoml/gtoml.go
+++ b/encoding/gtoml/gtoml.go
@@ -11,6 +11,7 @@ import (
 	"bytes"
 
 	"github.com/BurntSushi/toml"
+
 	"github.com/gogf/gf/v2/internal/json"
 )
 
diff --git a/encoding/gurl/url.go b/encoding/gurl/url.go
index 2e3d2d508..031c4e194 100644
--- a/encoding/gurl/url.go
+++ b/encoding/gurl/url.go
@@ -27,25 +27,27 @@ func Decode(str string) (string, error) {
 	return url.QueryUnescape(str)
 }
 
+// RawEncode does encode the given string according
 // URL-encode according to RFC 3986.
 // See http://php.net/manual/en/function.rawurlencode.php.
 func RawEncode(str string) string {
 	return strings.Replace(url.QueryEscape(str), "+", "%20", -1)
 }
 
+// RawDecode does decode the given string
 // Decode URL-encoded strings.
 // See http://php.net/manual/en/function.rawurldecode.php.
 func RawDecode(str string) (string, error) {
 	return url.QueryUnescape(strings.Replace(str, "%20", "+", -1))
 }
 
-// Generate URL-encoded query string.
+// BuildQuery Generate URL-encoded query string.
 // See http://php.net/manual/en/function.http-build-query.php.
 func BuildQuery(queryData url.Values) string {
 	return queryData.Encode()
 }
 
-// Parse a URL and return its components.
+// ParseURL Parse a URL and return its components.
 // -1: all; 1: scheme; 2: host; 4: port; 8: user; 16: pass; 32: path; 64: query; 128: fragment.
 // See http://php.net/manual/en/function.parse-url.php.
 func ParseURL(str string, component int) (map[string]string, error) {
diff --git a/encoding/gxml/gxml.go b/encoding/gxml/gxml.go
index 9dc9a5780..f1c61d441 100644
--- a/encoding/gxml/gxml.go
+++ b/encoding/gxml/gxml.go
@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"github.com/clbanning/mxj/v2"
+
 	"github.com/gogf/gf/v2/encoding/gcharset"
 	"github.com/gogf/gf/v2/text/gregex"
 )
@@ -63,9 +64,8 @@ func ToJson(content []byte) ([]byte, error) {
 	mv, err := mxj.NewMapXml(res)
 	if err == nil {
 		return mv.Json()
-	} else {
-		return nil, err
 	}
+	return nil, err
 }
 
 // convert does convert the encoding of given XML content from XML root tag into UTF-8 encoding content.
diff --git a/encoding/gyaml/gyaml.go b/encoding/gyaml/gyaml.go
index 4a9cbe234..143834dc0 100644
--- a/encoding/gyaml/gyaml.go
+++ b/encoding/gyaml/gyaml.go
@@ -8,10 +8,11 @@
 package gyaml
 
 import (
+	"gopkg.in/yaml.v3"
+
 	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/gogf/gf/v2/internal/json"
 	"github.com/gogf/gf/v2/util/gconv"
-	"gopkg.in/yaml.v3"
 )
 
 func Encode(value interface{}) (out []byte, err error) {
diff --git a/errors/gerror/gerror.go b/errors/gerror/gerror.go
index 23be7df27..85b80b465 100644
--- a/errors/gerror/gerror.go
+++ b/errors/gerror/gerror.go
@@ -6,8 +6,8 @@
 
 // Package gerror provides simple functions to manipulate errors.
 //
-// Very note that, this package is quite a basic package, which SHOULD NOT import extra
-// packages except standard packages and internal packages, to avoid cycle imports.
+// Very note that, this package is quite a basic package, which SHOULD NOT import extra packages
+// except standard packages and internal packages, to avoid cycle imports.
 package gerror
 
 import (
diff --git a/internal/intlog/intlog.go b/internal/intlog/intlog.go
index 5247f75bc..602e16000 100644
--- a/internal/intlog/intlog.go
+++ b/internal/intlog/intlog.go
@@ -14,9 +14,10 @@ import (
 	"path/filepath"
 	"time"
 
+	"go.opentelemetry.io/otel/trace"
+
 	"github.com/gogf/gf/v2/debug/gdebug"
 	"github.com/gogf/gf/v2/internal/utils"
-	"go.opentelemetry.io/otel/trace"
 )
 
 const (
diff --git a/net/ghttp/ghttp_middleware_tracing.go b/net/ghttp/ghttp_middleware_tracing.go
index f7c71a512..8f885bf1b 100644
--- a/net/ghttp/ghttp_middleware_tracing.go
+++ b/net/ghttp/ghttp_middleware_tracing.go
@@ -11,6 +11,12 @@ import (
 	"io/ioutil"
 	"net/http"
 
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/trace"
+
 	"github.com/gogf/gf/v2"
 	"github.com/gogf/gf/v2/internal/utils"
 	"github.com/gogf/gf/v2/net/ghttp/internal/client"
@@ -18,11 +24,6 @@ import (
 	"github.com/gogf/gf/v2/net/gtrace"
 	"github.com/gogf/gf/v2/text/gstr"
 	"github.com/gogf/gf/v2/util/gconv"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/codes"
-	"go.opentelemetry.io/otel/propagation"
-	"go.opentelemetry.io/otel/trace"
 )
 
 const (
diff --git a/net/ghttp/ghttp_response_view.go b/net/ghttp/ghttp_response_view.go
index 4d0aa4ac2..bfc8c6287 100644
--- a/net/ghttp/ghttp_response_view.go
+++ b/net/ghttp/ghttp_response_view.go
@@ -18,42 +18,42 @@ import (
 // WriteTpl parses and responses given template file.
 // The parameter `params` specifies the template variables for parsing.
 func (r *Response) WriteTpl(tpl string, params ...gview.Params) error {
-	if b, err := r.ParseTpl(tpl, params...); err != nil {
+	b, err := r.ParseTpl(tpl, params...)
+	if err != nil {
 		if !gmode.IsProduct() {
 			r.Write("Template Parsing Error: " + err.Error())
 		}
 		return err
-	} else {
-		r.Write(b)
 	}
+	r.Write(b)
 	return nil
 }
 
 // WriteTplDefault parses and responses the default template file.
 // The parameter `params` specifies the template variables for parsing.
 func (r *Response) WriteTplDefault(params ...gview.Params) error {
-	if b, err := r.ParseTplDefault(params...); err != nil {
+	b, err := r.ParseTplDefault(params...)
+	if err != nil {
 		if !gmode.IsProduct() {
 			r.Write("Template Parsing Error: " + err.Error())
 		}
 		return err
-	} else {
-		r.Write(b)
 	}
+	r.Write(b)
 	return nil
 }
 
 // WriteTplContent parses and responses the template content.
 // The parameter `params` specifies the template variables for parsing.
 func (r *Response) WriteTplContent(content string, params ...gview.Params) error {
-	if b, err := r.ParseTplContent(content, params...); err != nil {
+	b, err := r.ParseTplContent(content, params...)
+	if err != nil {
 		if !gmode.IsProduct() {
 			r.Write("Template Parsing Error: " + err.Error())
 		}
 		return err
-	} else {
-		r.Write(b)
 	}
+	r.Write(b)
 	return nil
 }
 
diff --git a/net/ghttp/ghttp_response_writer.go b/net/ghttp/ghttp_response_writer.go
index 08ea3daee..5a8781a02 100644
--- a/net/ghttp/ghttp_response_writer.go
+++ b/net/ghttp/ghttp_response_writer.go
@@ -50,7 +50,7 @@ func (w *ResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
 	return w.writer.(http.Hijacker).Hijack()
 }
 
-// Flush OutputBuffer outputs the buffer to client and clears the buffer.
+// Flush outputs the buffer to client and clears the buffer.
 func (w *ResponseWriter) Flush() {
 	if w.hijacked {
 		return
diff --git a/net/ghttp/ghttp_server.go b/net/ghttp/ghttp_server.go
index 9d2266d1f..7738d9a85 100644
--- a/net/ghttp/ghttp_server.go
+++ b/net/ghttp/ghttp_server.go
@@ -16,6 +16,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/olekukonko/tablewriter"
+
 	"github.com/gogf/gf/v2/container/garray"
 	"github.com/gogf/gf/v2/container/gtype"
 	"github.com/gogf/gf/v2/debug/gdebug"
@@ -34,7 +36,6 @@ import (
 	"github.com/gogf/gf/v2/text/gregex"
 	"github.com/gogf/gf/v2/text/gstr"
 	"github.com/gogf/gf/v2/util/gconv"
-	"github.com/olekukonko/tablewriter"
 )
 
 func init() {
diff --git a/net/ghttp/internal/client/client.go b/net/ghttp/internal/client/client.go
index c685b0f6a..1738495db 100644
--- a/net/ghttp/internal/client/client.go
+++ b/net/ghttp/internal/client/client.go
@@ -18,14 +18,14 @@ import (
 	"strings"
 	"time"
 
+	"golang.org/x/net/proxy"
+
 	"github.com/gogf/gf/v2"
 	"github.com/gogf/gf/v2/errors/gcode"
 	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/gogf/gf/v2/os/gfile"
-	"github.com/gogf/gf/v2/text/gstr"
-	"golang.org/x/net/proxy"
-
 	"github.com/gogf/gf/v2/text/gregex"
+	"github.com/gogf/gf/v2/text/gstr"
 )
 
 // Client is the HTTP client for HTTP request management.
diff --git a/net/ghttp/internal/client/client_tracing.go b/net/ghttp/internal/client/client_tracing.go
index 630617e6f..078ad4cb1 100644
--- a/net/ghttp/internal/client/client_tracing.go
+++ b/net/ghttp/internal/client/client_tracing.go
@@ -12,17 +12,18 @@ import (
 	"net/http"
 	"net/http/httptrace"
 
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/trace"
+
 	"github.com/gogf/gf/v2"
 	"github.com/gogf/gf/v2/internal/utils"
 	"github.com/gogf/gf/v2/net/ghttp/internal/httputil"
 	"github.com/gogf/gf/v2/net/gtrace"
 	"github.com/gogf/gf/v2/text/gstr"
 	"github.com/gogf/gf/v2/util/gconv"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/codes"
-	"go.opentelemetry.io/otel/propagation"
-	"go.opentelemetry.io/otel/trace"
 )
 
 const (
diff --git a/net/gtrace/gtrace.go b/net/gtrace/gtrace.go
index f64bc621b..846cefb47 100644
--- a/net/gtrace/gtrace.go
+++ b/net/gtrace/gtrace.go
@@ -12,14 +12,15 @@ import (
 	"os"
 	"strings"
 
-	"github.com/gogf/gf/v2/container/gmap"
-	"github.com/gogf/gf/v2/container/gvar"
-	"github.com/gogf/gf/v2/net/gipv4"
-	"github.com/gogf/gf/v2/os/gcmd"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/trace"
+
+	"github.com/gogf/gf/v2/container/gmap"
+	"github.com/gogf/gf/v2/container/gvar"
+	"github.com/gogf/gf/v2/net/gipv4"
+	"github.com/gogf/gf/v2/os/gcmd"
 )
 
 const (
diff --git a/net/gtrace/gtrace_baggage.go b/net/gtrace/gtrace_baggage.go
index dd7a0dfb4..26a9eb86a 100644
--- a/net/gtrace/gtrace_baggage.go
+++ b/net/gtrace/gtrace_baggage.go
@@ -9,10 +9,11 @@ package gtrace
 import (
 	"context"
 
+	"go.opentelemetry.io/otel/baggage"
+
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/container/gvar"
 	"github.com/gogf/gf/v2/util/gconv"
-	"go.opentelemetry.io/otel/baggage"
 )
 
 // Baggage holds the data through all tracing spans.
diff --git a/net/gtrace/gtrace_unit_carrier_test.go b/net/gtrace/gtrace_unit_carrier_test.go
index 24262222f..d3fecf225 100644
--- a/net/gtrace/gtrace_unit_carrier_test.go
+++ b/net/gtrace/gtrace_unit_carrier_test.go
@@ -10,10 +10,11 @@ import (
 	"context"
 	"testing"
 
-	"github.com/gogf/gf/v2/net/gtrace"
-	"github.com/gogf/gf/v2/test/gtest"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/trace"
+
+	"github.com/gogf/gf/v2/net/gtrace"
+	"github.com/gogf/gf/v2/test/gtest"
 )
 
 const (
diff --git a/os/gcache/gcache_adapter_memory.go b/os/gcache/gcache_adapter_memory.go
index 5d1a40d29..4d189fc87 100644
--- a/os/gcache/gcache_adapter_memory.go
+++ b/os/gcache/gcache_adapter_memory.go
@@ -99,7 +99,7 @@ func (c *AdapterMemory) SetMap(ctx context.Context, data map[interface{}]interfa
 	if err != nil {
 		return err
 	}
-	for k, _ := range data {
+	for k := range data {
 		c.eventList.PushBack(&adapterMemoryEvent{
 			k: k,
 			e: expireTime,
diff --git a/os/gfsnotify/gfsnotify.go b/os/gfsnotify/gfsnotify.go
index 12235ae61..b6de60e0e 100644
--- a/os/gfsnotify/gfsnotify.go
+++ b/os/gfsnotify/gfsnotify.go
@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/fsnotify/fsnotify"
+
 	"github.com/gogf/gf/v2/container/glist"
 	"github.com/gogf/gf/v2/container/gmap"
 	"github.com/gogf/gf/v2/container/gqueue"
diff --git a/os/glog/glog_logger.go b/os/glog/glog_logger.go
index 178c5828b..0190e3f09 100644
--- a/os/glog/glog_logger.go
+++ b/os/glog/glog_logger.go
@@ -16,6 +16,8 @@ import (
 	"time"
 
 	"github.com/fatih/color"
+	"go.opentelemetry.io/otel/trace"
+
 	"github.com/gogf/gf/v2/container/gtype"
 	"github.com/gogf/gf/v2/debug/gdebug"
 	"github.com/gogf/gf/v2/internal/intlog"
@@ -27,7 +29,6 @@ import (
 	"github.com/gogf/gf/v2/os/gtimer"
 	"github.com/gogf/gf/v2/text/gregex"
 	"github.com/gogf/gf/v2/util/gconv"
-	"go.opentelemetry.io/otel/trace"
 )
 
 // Logger is the struct for logging management.
diff --git a/os/gres/gres_instance.go b/os/gres/gres_instance.go
index f9e3fff3f..e04dc4311 100644
--- a/os/gres/gres_instance.go
+++ b/os/gres/gres_instance.go
@@ -9,7 +9,7 @@ package gres
 import "github.com/gogf/gf/v2/container/gmap"
 
 const (
-	// DefaultName Default group name for instance usage.
+	// DefaultName default group name for instance usage.
 	DefaultName = "default"
 )
 
diff --git a/os/gsession/gsession_storage_redis.go b/os/gsession/gsession_storage_redis.go
index 642b0d525..7f80f9f3d 100644
--- a/os/gsession/gsession_storage_redis.go
+++ b/os/gsession/gsession_storage_redis.go
@@ -77,7 +77,7 @@ func (s *StorageRedis) Get(ctx context.Context, id string, key string) (value in
 	return nil, ErrorDisabled
 }
 
-// GetMap retrieves all key-value pairs as map from storage.
+// Data retrieves all key-value pairs as map from storage.
 func (s *StorageRedis) Data(ctx context.Context, id string) (data map[string]interface{}, err error) {
 	return nil, ErrorDisabled
 }
@@ -135,9 +135,8 @@ func (s *StorageRedis) GetSession(ctx context.Context, id string, ttl time.Durat
 	}
 	if data == nil {
 		return gmap.NewStrAnyMapFrom(m, true), nil
-	} else {
-		data.Replace(m)
 	}
+	data.Replace(m)
 	return data, nil
 }