diff --git a/database/gdb/gdb.go b/database/gdb/gdb.go
index b60f1f2b6..9705e3316 100644
--- a/database/gdb/gdb.go
+++ b/database/gdb/gdb.go
@@ -373,9 +373,8 @@ var (
 	// tableFieldsMap caches the table information retrieved from database.
 	tableFieldsMap = gmap.NewStrAnyMap(true)
 
-	// [username[:password]@][protocol[(address)]]/dbname[?param1=value1&...&paramN=valueN]
-	linkPatternWithType    = `(\w+):([\w\-]+):(.+?)@(.+?)\((.+?):(\d+)\)/{0,1}([\w\-]*)\?{0,1}(.*)`
-	linkPatternWithoutType = `([\w\-]+):(.+?)@(.+?)\((.+?):(\d+)\)/{0,1}([\w\-]*)\?{0,1}(.*)`
+	// type:[username[:password]@][protocol[(address)]]/dbname[?param1=value1&...&paramN=valueN]
+	linkPattern = `(\w+):([\w\-]*):(.*?)@(\w+?)\((.+?)\)/{0,1}([\w\-]*)\?{0,1}(.*)`
 )
 
 func init() {
diff --git a/database/gdb/gdb_driver_wrapper_db.go b/database/gdb/gdb_driver_wrapper_db.go
index 7a58ec88b..3cbac5662 100644
--- a/database/gdb/gdb_driver_wrapper_db.go
+++ b/database/gdb/gdb_driver_wrapper_db.go
@@ -86,31 +86,22 @@ func (d *DriverWrapperDB) TableFields(ctx context.Context, table string, schema
 
 func parseConfigNodeLink(node *ConfigNode) *ConfigNode {
 	var match []string
-	// It firstly parses `link` using with type pattern.
-	match, _ = gregex.MatchString(linkPatternWithType, node.Link)
-	if len(match) > 6 {
-		node.Type = match[1]
-		node.User = match[2]
-		node.Pass = match[3]
-		node.Protocol = match[4]
-		node.Host = match[5]
-		node.Port = match[6]
-		node.Name = match[7]
-		if len(match) > 7 {
-			node.Extra = match[8]
-		}
-		node.Link = ""
-	} else {
-		// Else it parses `link` using without type pattern.
-		match, _ = gregex.MatchString(linkPatternWithoutType, node.Link)
-		if len(match) > 6 {
-			node.User = match[1]
-			node.Pass = match[2]
-			node.Protocol = match[3]
-			node.Host = match[4]
-			node.Port = match[5]
-			node.Name = match[6]
-			if len(match) > 7 {
+	if node.Link != "" {
+		match, _ = gregex.MatchString(linkPattern, node.Link)
+		if len(match) > 5 {
+			node.Type = match[1]
+			node.User = match[2]
+			node.Pass = match[3]
+			node.Protocol = match[4]
+			array := gstr.Split(match[5], ":")
+			if len(array) == 2 {
+				node.Host = array[0]
+				node.Port = array[1]
+				node.Name = match[6]
+			} else {
+				node.Name = match[5]
+			}
+			if len(match) > 6 {
 				node.Extra = match[7]
 			}
 			node.Link = ""
diff --git a/database/gdb/gdb_z_mysql_internal_test.go b/database/gdb/gdb_z_mysql_internal_test.go
index 0cef9bd4c..b8e2a0575 100644
--- a/database/gdb/gdb_z_mysql_internal_test.go
+++ b/database/gdb/gdb_z_mysql_internal_test.go
@@ -141,125 +141,50 @@ func Test_parseConfigNodeLink_WithType(t *testing.T) {
 		t.Assert(newNode.Charset, defaultCharset)
 		t.Assert(newNode.Protocol, `udp`)
 	})
-}
-
-func Test_parseConfigNodeLink_WithoutType(t *testing.T) {
 	gtest.C(t, func(t *gtest.T) {
 		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)/khaos_oss?loc=Local&parseTime=true&charset=latin`,
+			Link: `sqlite:root:CxzhD*624:27jh@file(/var/data/db.sqlite3)?local=Local&parseTime=true`,
 		}
 		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.Type, ``)
+		t.Assert(newNode.Type, `sqlite`)
 		t.Assert(newNode.User, `root`)
 		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, `khaos_oss`)
-		t.Assert(newNode.Extra, `loc=Local&parseTime=true&charset=latin`)
-		t.Assert(newNode.Charset, `latin`)
-		t.Assert(newNode.Protocol, `tcp`)
+		t.Assert(newNode.Host, ``)
+		t.Assert(newNode.Port, ``)
+		t.Assert(newNode.Name, `/var/data/db.sqlite3`)
+		t.Assert(newNode.Extra, `local=Local&parseTime=true`)
+		t.Assert(newNode.Charset, defaultCharset)
+		t.Assert(newNode.Protocol, `file`)
 	})
 	gtest.C(t, func(t *gtest.T) {
 		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)/khaos_oss?`,
+			Link: `sqlite::CxzhD*624:2@7jh@file(/var/data/db.sqlite3)`,
 		}
 		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.Type, ``)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, `khaos_oss`)
+		t.Assert(newNode.Type, `sqlite`)
+		t.Assert(newNode.User, ``)
+		t.Assert(newNode.Pass, `CxzhD*624:2@7jh`)
+		t.Assert(newNode.Host, ``)
+		t.Assert(newNode.Port, ``)
+		t.Assert(newNode.Name, `/var/data/db.sqlite3`)
 		t.Assert(newNode.Extra, ``)
 		t.Assert(newNode.Charset, defaultCharset)
-		t.Assert(newNode.Protocol, `tcp`)
+		t.Assert(newNode.Protocol, `file`)
 	})
 	gtest.C(t, func(t *gtest.T) {
 		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)/khaos_oss`,
+			Link: `sqlite::@file(/var/data/db.sqlite3)`,
 		}
 		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.Type, ``)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, `khaos_oss`)
+		t.Assert(newNode.Type, `sqlite`)
+		t.Assert(newNode.User, ``)
+		t.Assert(newNode.Pass, ``)
+		t.Assert(newNode.Host, ``)
+		t.Assert(newNode.Port, ``)
+		t.Assert(newNode.Name, `/var/data/db.sqlite3`)
 		t.Assert(newNode.Extra, ``)
 		t.Assert(newNode.Charset, defaultCharset)
-		t.Assert(newNode.Protocol, `tcp`)
-	})
-	// empty database preselect.
-	gtest.C(t, func(t *gtest.T) {
-		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)/?loc=Local&parseTime=true&charset=latin`,
-		}
-		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, ``)
-		t.Assert(newNode.Extra, `loc=Local&parseTime=true&charset=latin`)
-		t.Assert(newNode.Charset, `latin`)
-		t.Assert(newNode.Protocol, `tcp`)
-	})
-	gtest.C(t, func(t *gtest.T) {
-		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)?loc=Local&parseTime=true&charset=latin`,
-		}
-		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, ``)
-		t.Assert(newNode.Extra, `loc=Local&parseTime=true&charset=latin`)
-		t.Assert(newNode.Charset, `latin`)
-		t.Assert(newNode.Protocol, `tcp`)
-	})
-	gtest.C(t, func(t *gtest.T) {
-		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)/`,
-		}
-		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, ``)
-		t.Assert(newNode.Extra, ``)
-		t.Assert(newNode.Charset, defaultCharset)
-		t.Assert(newNode.Protocol, `tcp`)
-	})
-	gtest.C(t, func(t *gtest.T) {
-		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@tcp(9.135.69.119:3306)`,
-		}
-		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, ``)
-		t.Assert(newNode.Extra, ``)
-		t.Assert(newNode.Charset, defaultCharset)
-		t.Assert(newNode.Protocol, `tcp`)
-	})
-	// protocol.
-	gtest.C(t, func(t *gtest.T) {
-		node := &ConfigNode{
-			Link: `root:CxzhD*624:27jh@udp(9.135.69.119:3306)`,
-		}
-		newNode := parseConfigNodeLink(node)
-		t.Assert(newNode.User, `root`)
-		t.Assert(newNode.Pass, `CxzhD*624:27jh`)
-		t.Assert(newNode.Host, `9.135.69.119`)
-		t.Assert(newNode.Port, `3306`)
-		t.Assert(newNode.Name, ``)
-		t.Assert(newNode.Extra, ``)
-		t.Assert(newNode.Charset, defaultCharset)
-		t.Assert(newNode.Protocol, `udp`)
+		t.Assert(newNode.Protocol, `file`)
 	})
 }
 
diff --git a/version.go b/version.go
index 0c9540a38..6c10583e5 100644
--- a/version.go
+++ b/version.go
@@ -1,4 +1,4 @@
 package gf
 
-const VERSION = "v2.2.0"
+const VERSION = "v2.2.0-beta"
 const AUTHORS = "john<john@goframe.org>"