调查失败的MultipartFile Spring Rest调用的原始请求

Question

我正在使用spring-web-5.0.7.RELEASE.jar注释@ControllerAdvice

当请求失败时，@ControllerAdvice将自动生成带有一些消息的http 500。我的班级是这样做的：

@ControllerAdvice
public class ExceptionControllerAdvice {
    protected final Log log = LogFactory
            .getLog(ExceptionControllerAdvice.class);

    @ExceptionHandler({ DataStoreException.class, Exception.class })
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ResponseEntity<ErrorResponse> exceptionHandler(Exception ex) {
        log.error(ex.toString(),ex);
        ErrorResponse error = new ErrorResponse();
        error.setErrorCode(HttpStatus.INTERNAL_SERVER_ERROR.value());
        if (ex instanceof DataStoreException) {
            error.setMessage(((DataStoreException) ex).getExceptionMessage());
        } else if (ex instanceof UserContextException) {
            error.setMessage(((UserContextException) ex).getMessage());
        } else {
            error.setMessage("Please contact your administrator");
        }
        return new ResponseEntity<ErrorResponse>(error, HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

基于上面的日志记录，我看到许多此错误消息：

org.springframework.web.multipart.MultipartException: Current request is not a multipart request: org.springframework.web.multipart.MultipartException: Current request is not a multipart request
    at deployment.docstore.war//org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:196)
    at deployment.docstore.war//org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:112)
    at deployment.docstore.war//org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:124)
    at deployment.docstore.war//org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:161)
    at deployment.docstore.war//org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:131)
    at deployment.docstore.war//org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
    at deployment.docstore.war//org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877)
    at deployment.docstore.war//org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783)
    at deployment.docstore.war//org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at deployment.docstore.war//org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)
--- and so on ---

如何跟踪请求，到达此状态后收到了什么？

仅供参考，可以使用典型的@RestController设置端点，并且可以通过命令行 curl
访问 curl -k --header "$HEADER" -X POST "${BASE_URL}/scans/customers/${CUSTOMER_ID}" -F file=@/Users/me/Downloads/$FILENAME -F "filename=$FILENAME"

。上面的异常是由另一个程序（而不是curl）调用的。

@RestController
@RequestMapping("/api/v3/artifacts")
public class MyClass {

  @RequestMapping(value = "scans/customers/{customerId}", method = RequestMethod.POST)
  @Produces(MediaType.TEXT_PLAIN)
  public String saveFile(@RequestParam("file") MultipartFile file, @PathVariable Long customerId,
            @RequestParam(name = "filename") String fileName) throws 
  Exception {

        String result = "NEWFILEID_IS_123"; //just an example
        return result;
  }
}