分段文件上传:大小超出Spring Boot异常返回JSON错误消息
由于我设置了最大文件上传限制,
org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 2097152 bytes
上载文件时出错。它给我的api带来了500错误,我应该处理此错误并以JSON
格式(不是提供的错误页)返回响应ErrorController
我想捕获该异常,但不给出JSON响应ErrorPage
。
@RequestMapping(value="/save",method=RequestMethod.POST) public ResponseDTO<String> save(@ModelAttribute @Valid FileUploadSingleDTO fileUploadSingleDTO,BindingResult bindingResult)throws MaxUploadSizeExceededException
{
ResponseDTO<String> result=documentDetailsService.saveDocumentSyn(fileUploadSingleDTO, bindingResult);
return result;
}
接受文件的DTO如下
public class FileUploadSingleDTO {@NotNull
private Integer documentName;
private Integer documentVersion;
@NotNull
private MultipartFile file;
}
回答:
据我所知,您可以使用此文件处理多部分文件异常。
@ControllerAdvicepublic class MyErrorController extends ResponseEntityExceptionHandler {
Logger logger = org.slf4j.LoggerFactory.getLogger(getClass());
@ExceptionHandler(MultipartException.class)
@ResponseBody
String handleFileException(HttpServletRequest request, Throwable ex) {
//return your json insted this string.
return "File upload error";
}
}
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