使用Spring MVC處理MaxUploadSizeExceededException

如何在超過文件大小的情況下攔截併發送帶文件上傳的自定義錯誤消息。我在控制器類中有一個帶註釋的異常處理程序，但請求沒有發送到控制器。我在這個鏈接How to handle MaxUploadSizeExceededException上遇到的答案建議實現HandlerExceptionResolver。使用Spring MVC處理MaxUploadSizeExceededException

在Spring 3.5中是否發生了變化，或者仍然是唯一的解決方案？

來源

2012-01-25 Deepak Marur

我最終實現HandlerExceptionResolver：

@Component public class ExceptionResolverImpl implements HandlerExceptionResolver { 
private static final Logger LOG = LoggerFactory.getLogger(ExceptionResolverImpl.class); 

@Override 
public ModelAndView resolveException(HttpServletRequest request, 
     HttpServletResponse response, Object obj, Exception exc) { 

    if(exc instanceof MaxUploadSizeExceededException) { 
     response.setContentType("text/html"); 
     response.setStatus(HttpStatus.REQUEST_ENTITY_TOO_LARGE.value()); 

     try { 
      PrintWriter out = response.getWriter(); 

      Long maxSizeInBytes = ((MaxUploadSizeExceededException) exc).getMaxUploadSize(); 

      String message = "Maximum upload size of " + maxSizeInBytes + " Bytes per attachment exceeded"; 
      //send json response 
      JSONObject json = new JSONObject(); 

      json.put(REConstants.JSON_KEY_MESSAGE, message); 
      json.put(REConstants.JSON_KEY_SUCCESS, false); 

      String body = json.toString(); 

      out.println("<html><body><textarea>" + body + "</textarea></body></html>"); 

      return new ModelAndView(); 
     } 
     catch (IOException e) { 
      LOG.error("Error writing to output stream", e); 
     } 
    } 

    //for default behaviour 
    return null; 
}

}

來源

2012-02-11 15:24:09

使用Spring MVC處理MaxUploadSizeExceededException

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