fix(net/ghttp) parseForm MakeBodyRepeatableRead not effective

Author: cyjaysong

net/ghttp/ghttp_request_param.go

@@ -268,28 +268,28 @@ func (r *Request) parseForm() {
 	if r.ContentLength == 0 {
 		return
 	}
+
 	if contentType := r.Header.Get("Content-Type"); contentType != "" {
-		var (
-			err            error
-			repeatableRead = true
-		)
-		if gstr.Contains(contentType, "multipart/") {
+		var isMultiPartRequest = gstr.Contains(contentType, "multipart/")
+		var isFormRequest = gstr.Contains(contentType, "form")
+		var err error
+
+		if !isMultiPartRequest {
 			// To avoid big memory consuming.
 			// The `multipart/` type form always contains binary data, which is not necessary read twice.
-			repeatableRead = false
+			r.MakeBodyRepeatableRead(true)
+		}
+		if isMultiPartRequest {
 			// multipart/form-data, multipart/mixed
 			if err = r.ParseMultipartForm(r.Server.config.FormParsingMemory); err != nil {
 				panic(gerror.WrapCode(gcode.CodeInvalidRequest, err, "r.ParseMultipartForm failed"))
 			}
-		} else if gstr.Contains(contentType, "form") {
+		} else if isFormRequest {
 			// application/x-www-form-urlencoded
 			if err = r.Request.ParseForm(); err != nil {
 				panic(gerror.WrapCode(gcode.CodeInvalidRequest, err, "r.Request.ParseForm failed"))
 			}
 		}
-		if repeatableRead {
-			r.MakeBodyRepeatableRead(true)
-		}
 		if len(r.PostForm) > 0 {
 			// Parse the form data using united parsing way.
 			params := ""

net/ghttp/ghttp_z_unit_feature_request_struct_test.go

@@ -115,6 +115,42 @@ func Test_Params_ParseForm(t *testing.T) {
 	})
 }
 
+// https://github.com/gogf/gf/pull/4143
+func Test_Params_ParseForm_FixMakeBodyRepeatableRead(t *testing.T) {
+	type User struct {
+		Id   int
+		Name string
+	}
+	s := g.Server(guid.S())
+	s.BindHandler("/parse-form", func(r *ghttp.Request) {
+		var user *User
+		if err := r.ParseForm(&user); err != nil {
+			r.Response.WriteExit(err)
+		}
+		hasBody := len(r.GetBody()) > 0
+		r.Response.WriteExit(hasBody)
+	})
+	s.SetDumpRouterMap(false)
+	s.Start()
+	defer s.Shutdown()
+
+	time.Sleep(100 * time.Millisecond)
+	gtest.C(t, func(t *gtest.T) {
+		c := g.Client()
+		c.SetPrefix(fmt.Sprintf("http://127.0.0.1:%d", s.GetListenedPort()))
+		t.Assert(c.GetContent(ctx, "/parse-form"), `false`)
+		t.Assert(c.GetContent(ctx, "/parse-form", g.Map{
+			"id":   1,
+			"name": "john",
+		}), false)
+		t.Assert(c.PostContent(ctx, "/parse-form"), `false`)
+		t.Assert(c.PostContent(ctx, "/parse-form", g.Map{
+			"id":   1,
+			"name": "john",
+		}), true)
+	})
+}
+
 func Test_Params_ComplexJsonStruct(t *testing.T) {
 	type ItemEnv struct {
 		Type  string