简化前台显示错误信息的代码

src/main/webapp/resources/js/files/app.js

@@ -230,9 +230,6 @@ function deleteFile(path, listItemDiv) {
  * @param XMLHttpRequest
  */
 function showErrorMessageByXMLHttpRequest(XMLHttpRequest) {
-	// 处理后台传输的自定义的换行标志
-	var result = JSON.parse(XMLHttpRequest.responseText);
-	var message = result.message;
-	var detailedMessage = result.detailedMessage;
+	var message = JSON.parse(XMLHttpRequest.responseText).message;
 	alert(spinnerContainer, message);
 }