Fix/1748 issues #1748 (#1817)

.golangci.yml

@@ -1,6 +1,6 @@
 ## This file contains all available configuration options
 ## with their default values.
-#
+
 # See https://github.com/golangci/golangci-lint#config-file
 run:
   issues-exit-code: 1 #Default

net/ghttp/ghttp_request_param_file.go

@@ -16,6 +16,7 @@ import (
 	"github.com/gogf/gf/v2/errors/gcode"
 	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/gogf/gf/v2/internal/intlog"
+	"github.com/gogf/gf/v2/internal/json"
 	"github.com/gogf/gf/v2/os/gfile"
 	"github.com/gogf/gf/v2/os/gtime"
 	"github.com/gogf/gf/v2/util/grand"
@@ -27,6 +28,11 @@ type UploadFile struct {
 	ctx                   context.Context
 }
 
+// MarshalJSON implements the interface MarshalJSON for json.Marshal.
+func (f UploadFile) MarshalJSON() ([]byte, error) {
+	return json.Marshal(f.FileHeader)
+}
+
 // UploadFiles is an array type of *UploadFile.
 type UploadFiles []*UploadFile
 

net/ghttp/ghttp_z_unit_feature_request_file_test.go

@@ -216,3 +216,39 @@ func Test_Params_Strict_Route_File_Single(t *testing.T) {
 		t.Assert(gfile.GetContents(dstPath), gfile.GetContents(srcPath))
 	})
 }
+
+func Test_Params_File_Upload_Required(t *testing.T) {
+	type Req struct {
+		gmeta.Meta `method:"post" mime:"multipart/form-data"`
+		File       *ghttp.UploadFile `type:"file" v:"required#upload file is required"`
+	}
+	type Res struct{}
+
+	dstDirPath := gfile.Temp(gtime.TimestampNanoStr())
+	s := g.Server(guid.S())
+	s.BindHandler("/upload/required", func(ctx context.Context, req *Req) (res *Res, err error) {
+		var (
+			r = g.RequestFromCtx(ctx)
+		)
+
+		file := req.File
+		if name, err := file.Save(dstDirPath); err == nil {
+			r.Response.WriteExit(name)
+		}
+		r.Response.WriteExit("upload failed")
+		return
+	})
+	s.SetDumpRouterMap(false)
+	s.Start()
+	defer s.Shutdown()
+	time.Sleep(100 * time.Millisecond)
+	// file is empty
+	gtest.C(t, func(t *gtest.T) {
+		client := g.Client()
+		client.SetPrefix(fmt.Sprintf("http://127.0.0.1:%d", s.GetListenedPort()))
+		_, err := client.Post(ctx, "/upload/required")
+		if err != nil {
+			t.Assert(err.Error(), "upload file is required")
+		}
+	})
+}

util/gconv/gconv.go

@@ -79,7 +79,7 @@ func Bytes(any interface{}) []byte {
 				ok    = true
 				bytes = make([]byte, originValueAndKind.OriginValue.Len())
 			)
-			for i, _ := range bytes {
+			for i := range bytes {
 				int32Value := Int32(originValueAndKind.OriginValue.Index(i).Interface())
 				if int32Value < 0 || int32Value > math.MaxUint8 {
 					ok = false
@@ -112,7 +112,7 @@ func Runes(any interface{}) []rune {
 }
 
 // String converts `any` to string.
-// It's most commonly used converting function.
+// It's most commonly used converting function
 func String(any interface{}) string {
 	if any == nil {
 		return ""

util/gconv/gconv_scan.go

@@ -53,7 +53,6 @@ func Scan(params interface{}, pointer interface{}, mapping ...map[string]string)
 				pointerType,
 			)
 		}
-
 	}
 	// Direct assignment checks!
 	var (

util/gutil/gutil.go

@@ -66,7 +66,7 @@ func IsEmpty(value interface{}) bool {
 func Keys(mapOrStruct interface{}) (keysOrAttrs []string) {
 	keysOrAttrs = make([]string, 0)
 	if m, ok := mapOrStruct.(map[string]interface{}); ok {
-		for k, _ := range m {
+		for k := range m {
 			keysOrAttrs = append(keysOrAttrs, k)
 		}
 		return