日志方法增加异步与同步的方法

storage/handler.go

@@ -155,18 +155,17 @@ func NewProxyHandler(storage Storage) *ProxyHandler {
 
 // ServeHTTP 处理文件查看请求
 // URL参数: key (对象键)
+// 注意：此方法直接返回文件内容（二进制），错误时返回标准HTTP错误状态码
 func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	handler := commonhttp.NewHandler(w, r)
-
 	if r.Method != http.MethodGet {
-		handler.Error(4001, "Method not allowed")
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		return
 	}
 
 	// 获取对象键
-	objectKey := handler.GetQuery("key", "")
+	objectKey := r.URL.Query().Get("key")
 	if objectKey == "" {
-		handler.Error(4004, "Missing parameter: key")
+		http.Error(w, "Missing parameter: key", http.StatusBadRequest)
 		return
 	}
 
@@ -174,19 +173,19 @@ func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 	exists, err := h.storage.Exists(ctx, objectKey)
 	if err != nil {
-		handler.SystemError(fmt.Sprintf("Failed to check file existence: %v", err))
+		http.Error(w, fmt.Sprintf("Failed to check file existence: %v", err), http.StatusInternalServerError)
 		return
 	}
 
 	if !exists {
-		handler.Error(4005, "File not found")
+		http.Error(w, "File not found", http.StatusNotFound)
 		return
 	}
 
 	// 获取文件内容
 	reader, err := h.storage.GetObject(ctx, objectKey)
 	if err != nil {
-		handler.SystemError(fmt.Sprintf("Failed to get file: %v", err))
+		http.Error(w, fmt.Sprintf("Failed to get file: %v", err), http.StatusInternalServerError)
 		return
 	}
 	defer reader.Close()
@@ -210,7 +209,8 @@ func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	// 复制文件内容到响应
 	_, err = io.Copy(w, reader)
 	if err != nil {
-		handler.SystemError(fmt.Sprintf("Failed to write response: %v", err))
+		// 如果已经开始写入响应，无法再设置错误状态码
+		// 这里只能记录错误，无法返回错误响应
 		return
 	}
 }