Spring Boot - Multipart file maximum upload size exception

Question

I'm developing a endpoint with Spring Boot 2.1.3 (using the standard Tomcat embedded web server) to upload an image and I want to limit the size of the multipart upload. I can do this easily with the properties:

spring:
    servlet:
        multipart:
            max-file-size: 2MB
            max-request-size: 2MB

But I always get a 500 that Spring can't catch because is Tomcat that is throwing the exception and the request don't reach my code in the RestController.

2019-03-02 10:12:50.544 ERROR [] [   o.a.c.c.C.[.[.[/].[dispatcherServlet]] [] Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (3917946) exceeds the configured maximum (2097152)] with root cause 
org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (3917946) exceeds the configured maximum (2097152)

My ExceptionHandler is like this but obviously don't work whatever the exception that put in the annotation:

@ExceptionHandler(MaxUploadSizeExceededException.class)
public ResponseEntity handleMaxSizeException(Exception e) {
    logger.warn(e.getMessage());
    ...
    return status(HttpStatus.PAYLOAD_TOO_LARGE).body(...);
}

I already tried this with the already mentioned properties but without any effect:

@Bean
public TomcatServletWebServerFactory containerFactory() {
    TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
    factory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> 
        ((AbstractHttp11Protocol<?>) connector.getProtocolHandler()).setMaxSwallowSize(-1));
    return factory;
}

I already checked the answers in the following questions (and others...) but they are mostly outdated or simply don't work:

• Multipart file maximum size exception - spring boot embbeded tomcat
• MaxUploadSizeExceededException doesn't invoke the exception handling method in Spring
• How to handle MaxUploadSizeExceededException

Is somebody struggling with this?

Answer 1

A bit late. You need set in application.properties or application.yml server.tomcat.max-swallow-size=-1 With it tomcat will not interferred in the upload request and the operation will be handle fully by spring and your exception controller will work perfectly. References

Answer 2

Please add this in your application.properties:

spring.servlet.multipart.max-file-size=50MB
spring.servlet.multipart.max-request-size=50MB

You can change the size as you need in the above config