diff --git a/auth/gitee.go b/auth/gitee.go
index ebe5415..53436e2 100644
--- a/auth/gitee.go
+++ b/auth/gitee.go
@@ -24,6 +24,9 @@ var (
 	downloadPermissions = []string{"admin", "developer", "read"}
 )
 
+var contentType = "Content-Type"
+var verifyLog = "verifyUser"
+
 type giteeUser struct {
 	Permission string `json:"permission"`
 }
@@ -107,7 +110,7 @@ func CheckRepoOwner(userInRepo UserInRepo) error {
 	} else {
 		path += fmt.Sprintf("?access_token=%s", defaultToken)
 	}
-	headers := http.Header{"Content-Type": []string{"application/json;charset=UTF-8"}}
+	headers := http.Header{contentType: []string{"application/json;charset=UTF-8"}}
 	repo := new(Repo)
 	err := getParsedResponse("GET", path, headers, nil, &repo)
 	if err != nil {
@@ -143,7 +146,7 @@ func getToken(username, password string) (string, error) {
 	form.Add("client_secret", clientSecret)
 
 	path := "https://gitee.com/oauth/token"
-	headers := http.Header{"Content-Type": []string{"application/x-www-form-urlencoded"}}
+	headers := http.Header{contentType: []string{"application/x-www-form-urlencoded"}}
 	accessToken := new(AccessToken)
 	err := getParsedResponse("POST", path, headers, strings.NewReader(form.Encode()), &accessToken)
 	if err != nil {
@@ -167,12 +170,12 @@ func verifyUser(userInRepo UserInRepo) error {
 	} else {
 		path += fmt.Sprintf("?access_token=%s", defaultToken)
 	}
-	headers := http.Header{"Content-Type": []string{"application/json;charset=UTF-8"}}
+	headers := http.Header{contentType: []string{"application/json;charset=UTF-8"}}
 	giteeUser := new(giteeUser)
 	err := getParsedResponse("GET", path, headers, nil, &giteeUser)
 	if err != nil {
 		msg := err.Error() + ": verify user permission failed"
-		logrus.Error(fmt.Sprintf("verifyUser | %s", msg))
+		logrus.Error(fmt.Sprintf("%s | %s", verifyLog, msg))
 		return errors.New(msg)
 	}
 
@@ -187,7 +190,7 @@ func verifyUser(userInRepo UserInRepo) error {
 		remindMsg := " \n如果您正在向fork仓库上传大文件，请确认您已使用如下命令修改了本地仓库的配置：" +
 			"\n`git config --local lfs.url https://artifacts.openeuler.openatom.cn/{owner}/{repo}`" +
 			"，\n其中{owner}/{repo}请改为您fork之后的仓库的名称"
-		logrus.Error(fmt.Sprintf("verifyUser | %s", msg))
+		logrus.Error(fmt.Sprintf("%s | %s", verifyLog, msg))
 		return errors.New(msg + remindMsg)
 	} else if userInRepo.Operation == "download" {
 		for _, v := range downloadPermissions {
@@ -196,11 +199,11 @@ func verifyUser(userInRepo UserInRepo) error {
 			}
 		}
 		msg := fmt.Sprintf("forbidden: user %s has no permission to download", userInRepo.Username)
-		logrus.Error(fmt.Sprintf("verifyUser | %s", msg))
+		logrus.Error(fmt.Sprintf("%s | %s", verifyLog, msg))
 		return errors.New(msg)
 	} else {
 		msg := "system_error: unknow operation"
-		logrus.Error(fmt.Sprintf("verifyUser | %s", msg))
+		logrus.Error(fmt.Sprintf("%s | %s", verifyLog, msg))
 		return errors.New(msg)
 	}
 }
diff --git a/auth/gitee_test.go b/auth/gitee_test.go
index 193066f..a4c627a 100644
--- a/auth/gitee_test.go
+++ b/auth/gitee_test.go
@@ -20,10 +20,6 @@ func (s *SuiteGitee) SetupSuite() {
 	s.Owner = "src-openeuler"
 }
 
-// TearDownSuite used for testing
-func (s *SuiteGitee) TearDownSuite() {
-}
-
 func (s *SuiteGitee) TestGetToken() {
 	// getToken fail
 	token, err := getToken("user", "wrong_pwd")
diff --git a/auth/github_test.go b/auth/github_test.go
index 1c65c84..f325e54 100644
--- a/auth/github_test.go
+++ b/auth/github_test.go
@@ -20,10 +20,6 @@ func (s *SuiteGithub) SetupSuite() {
 	s.Password = "password"
 }
 
-// TearDownSuite used for testing
-func (s *SuiteGithub) TearDownSuite() {
-}
-
 func (s *SuiteGithub) TestStatic() {
 	// Static success
 	static := Static(s.Username, s.Password)
diff --git a/server/server.go b/server/server.go
index 60035d8..e7c6a2b 100644
--- a/server/server.go
+++ b/server/server.go
@@ -21,6 +21,7 @@ import (
 
 var ObsPutLimit int = 5*int(math.Pow10(9)) - 1 // 5GB - 1
 var oidRegexp = regexp.MustCompile("^[a-f0-9]{64}$")
+var contentType = "Content-Type"
 
 type Options struct {
 	// required
@@ -114,7 +115,7 @@ func (s *server) key(oid string) string {
 }
 
 func (s *server) handleBatch(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/vnd.git-lfs+json")
+	w.Header().Set(contentType, "application/vnd.git-lfs+json")
 	w.Header().Set("X-Content-Type-Options", "nosniff")
 
 	var req batch.Request
@@ -169,6 +170,8 @@ func (s *server) handleBatch(w http.ResponseWriter, r *http.Request) {
 			s.downloadObject(&in, out)
 		case "upload":
 			s.uploadObject(&in, out)
+		default:
+			continue
 		}
 	}
 	must(json.NewEncoder(w).Encode(resp))
@@ -228,13 +231,15 @@ func (s *server) downloadObject(in *batch.RequestObject, out *batch.Object) {
 			Code:    422,
 			Message: "found object with wrong size",
 		}
+	} else {
+		logrus.Infof("Metadata check pass, Size check pass")
 	}
 	getObjectInput := &obs.CreateSignedUrlInput{}
 	getObjectInput.Method = obs.HttpMethodGet
 	getObjectInput.Bucket = s.bucket
 	getObjectInput.Key = s.key(in.OID)
 	getObjectInput.Expires = int(s.ttl / time.Second)
-	getObjectInput.Headers = map[string]string{"Content-Type": "application/octet-stream"}
+	getObjectInput.Headers = map[string]string{contentType: "application/octet-stream"}
 	// 生成下载对象的带授权信息的URL
 	v := s.generateDownloadUrl(getObjectInput)
 
@@ -261,7 +266,7 @@ func (s *server) uploadObject(in *batch.RequestObject, out *batch.Object) {
 	putObjectInput.Bucket = s.bucket
 	putObjectInput.Key = s.key(in.OID)
 	putObjectInput.Expires = int(s.ttl / time.Second)
-	putObjectInput.Headers = map[string]string{"Content-Type": "application/octet-stream"}
+	putObjectInput.Headers = map[string]string{contentType: "application/octet-stream"}
 	putObjectOutput, err := s.client.CreateSignedUrl(putObjectInput)
 	if err != nil {
 		panic(err)
@@ -300,7 +305,7 @@ func (s *server) healthCheck(w http.ResponseWriter, r *http.Request) {
 		Data:    "healthCheck success",
 	}
 
-	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set(contentType, "application/json")
 	w.WriteHeader(http.StatusOK)
 	must(json.NewEncoder(w).Encode(response))
 }