java - Tomcat:ExceptionHasndler 不适用于 MultiPartException 但适用于 IllegalArgumentException

Question

我有这样的 Controller :

@PostMapping("/rest_upload1")
public ResponseEntity upload1(@RequestParam("file") MultipartFile multipartFile) throws IOException {
  throw new IllegalArgumentException();
}

在配置中我有设置:

spring.http.multipart.max-file-size=100MB
spring.http.multipart.max-request-size=100MB

这意味着如果文件超过 100MB，spring 将抛出 MultipartException。

为了处理这个异常，我编写了处理程序:

@ControllerAdvice
public class RestExceptionHandlerAdvice extends ResponseEntityExceptionHandler {

    @ExceptionHandler(MultipartException.class)
    @ResponseBody
    public ResponseEntity<ApiError> handleException(MultipartException e) {
         logger.warn("MultipartException:", e);
         ApiError apiError = new ApiError(HttpStatus.BAD_REQUEST,
                String.valueOf(HttpStatus.BAD_REQUEST),
                ExceptionUtils.getRootCauseMessage(e),
                Collections.emptyList());
        return new ResponseEntity<ApiError>(apiError, HttpStatus.BAD_REQUEST);        
    }

如果出现错误，此代码将调用(我在调试中看到它)

但在浏览器中我没有看到响应:

我在谷歌上搜索了很多时间，看起来一切正常。我尝试为 IllegalArgumentException 添加处理程序:

@ExceptionHandler(IllegalArgumentException.class)
@ResponseBody
public ResponseEntity<ApiError> handleException(IllegalArgumentException e) {

    ApiError apiError = new ApiError(HttpStatus.BAD_REQUEST,
                String.valueOf(HttpStatus.BAD_REQUEST),
                ExceptionUtils.getRootCauseMessage(e),
                Collections.emptyList());

    return new ResponseEntity<ApiError>(apiError, HttpStatus.BAD_REQUEST);            
}

我上传的文件小于 100mb。在这种情况下，结果不同:

但无论如何响应代码是错误的。

有什么问题吗？

附言

我试过:

@ExceptionHandler(MultipartException.class)
@ResponseStatus(value = HttpStatus.PAYLOAD_TOO_LARGE)
@ResponseBody
public String handleException(MultipartException e) {
    return ExceptionUtils.getRootCauseMessage(e);      
}

看起来和这里一样:

How to handle maximum file size Exception in Spring Boot?

附言2

我找到了解决方法，但它看起来像是 sring 中的错误:

我添加了依赖:

compile "org.apache.commons:commons-io:1.3.2"
compile "commons-fileupload:commons-fileupload:1.3.3"

注册bean:

@Bean
public MultipartResolver multipartResolver() {
    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
     multipartResolver.setMaxUploadSize(10);
     return multipartResolver;
}

并写道:

@ControllerAdvice
public class UploadExceptionHandler {
    @ExceptionHandler(MaxUploadSizeExceededException.class)
    @ResponseStatus(HttpStatus.PAYLOAD_TOO_LARGE)
    @ResponseBody
    public String handleMaxUploadSizeExceededException(MaxUploadSizeExceededException e) {
        return e.getMessage();
    }
}

Answer 1

不是很聪明的 tomcat 开发人员添加了我们需要禁用/覆盖的新功能。

添加后就可以了:

    @Bean
    public TomcatEmbeddedServletContainerFactory tomcatEmbedded() {

        TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();

        tomcat.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {

            // connector other settings...

            // configure maxSwallowSize
            if ((connector.getProtocolHandler() instanceof AbstractHttp11Protocol<?>)) {
                // -1 means unlimited, accept bytes
                ((AbstractHttp11Protocol<?>) connector.getProtocolHandler()).setMaxSwallowSize(-1);
            }

        });

        return tomcat;

    }