调整项目结构,factory只负责暴露方法，不实现业务细节

storage/handler.go

@@ -43,31 +43,29 @@ func NewUploadHandler(cfg UploadHandlerConfig) *UploadHandler {
 // 表单字段: file (文件)
 // 可选字段: prefix (对象键前缀，会覆盖配置中的前缀)
 func (h *UploadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	handler := commonhttp.NewHandler(w, r)
-
 	if r.Method != http.MethodPost {
-		handler.Error(4001, "Method not allowed")
+		commonhttp.Error(w, 4001, "Method not allowed")
 		return
 	}
 
 	// 解析multipart表单
 	err := r.ParseMultipartForm(h.maxFileSize)
 	if err != nil {
-		handler.Error(4002, fmt.Sprintf("Failed to parse form: %v", err))
+		commonhttp.Error(w, 4002, fmt.Sprintf("Failed to parse form: %v", err))
 		return
 	}
 
 	// 获取文件
 	file, header, err := r.FormFile("file")
 	if err != nil {
-		handler.Error(4003, fmt.Sprintf("Failed to get file: %v", err))
+		commonhttp.Error(w, 4003, fmt.Sprintf("Failed to get file: %v", err))
 		return
 	}
 	defer file.Close()
 
 	// 检查文件大小
 	if h.maxFileSize > 0 && header.Size > h.maxFileSize {
-		handler.Error(1001, fmt.Sprintf("File size exceeds limit: %d bytes", h.maxFileSize))
+		commonhttp.Error(w, 1001, fmt.Sprintf("File size exceeds limit: %d bytes", h.maxFileSize))
 		return
 	}
 
@@ -82,7 +80,7 @@ func (h *UploadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			}
 		}
 		if !allowed {
-			handler.Error(1002, fmt.Sprintf("File extension not allowed. Allowed: %v", h.allowedExts))
+			commonhttp.Error(w, 1002, fmt.Sprintf("File extension not allowed. Allowed: %v", h.allowedExts))
 			return
 		}
 	}
@@ -110,14 +108,14 @@ func (h *UploadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 	err = h.storage.Upload(ctx, objectKey, file, contentType)
 	if err != nil {
-		handler.SystemError(fmt.Sprintf("Failed to upload file: %v", err))
+		commonhttp.SystemError(w, fmt.Sprintf("Failed to upload file: %v", err))
 		return
 	}
 
 	// 获取文件URL
 	fileURL, err := h.storage.GetURL(objectKey, 0)
 	if err != nil {
-		handler.SystemError(fmt.Sprintf("Failed to get file URL: %v", err))
+		commonhttp.SystemError(w, fmt.Sprintf("Failed to get file URL: %v", err))
 		return
 	}
 
@@ -130,7 +128,7 @@ func (h *UploadHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		UploadTime:  time.Now(),
 	}
 
-	handler.SuccessWithMessage("Upload successful", result)
+	commonhttp.Success(w, result, "Upload successful")
 }
 
 // generateUniqueFilename 生成唯一文件名