fix: #2938 (#3178)

example/httpserver/upload_file/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/frame/g"
+	"github.com/gogf/gf/v2/net/ghttp"
+)
+
+type UploadReq struct {
+	g.Meta `path:"/upload" method:"POST" tags:"Upload" mime:"multipart/form-data" summary:"上传文件"`
+	File   *ghttp.UploadFile `p:"file" type:"file" dc:"选择上传文件"`
+	Msg    string            `dc:"消息"`
+}
+type UploadRes struct {
+	FileName string `json:"fileName"`
+}
+
+type cUpload struct{}
+
+func (u cUpload) Upload(ctx context.Context, req *UploadReq) (*UploadRes, error) {
+	if req.File != nil {
+		return &UploadRes{
+			FileName: req.File.Filename,
+		}, nil
+	}
+	return nil, nil
+}
+
+func main() {
+	s := g.Server()
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.Middleware(ghttp.MiddlewareHandlerResponse)
+		group.Bind(cUpload{})
+	})
+	s.SetClientMaxBodySize(600 * 1024 * 1024) // 600M
+	s.SetPort(8199)
+	s.SetAccessLogEnabled(true)
+	s.Run()
+}
+
+// curl --location 'http://127.0.0.1:8199/upload' \
+// --form 'file=@"/D:/下载/goframe-v2.5.pdf"' \
+// --form 'msg="666"'