How to set the max size of upload file

Question

I'm developing application based on Spring Boot and AngularJS using JHipster. My question is how to set max size of uploading files?

If I'm trying to upload to big file I'm getting this information in console:

  DEBUG 11768 --- [io-8080-exec-10] c.a.app.aop.logging.LoggingAspect: 

Enter: com.anuglarspring.app.web.rest.errors.ExceptionTranslator.processRuntimeException() with argument[s] = 

[org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: 

org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.]

And server response with status 500.

How to set that?

Answer 1

For Spring Boot 2.+, make sure you are using spring.servlet instead of spring.http.

---
spring:
  servlet:
    multipart:
      max-file-size: 10MB
      max-request-size: 10MB

If you have to use tomcat, you might end up creating EmbeddedServletContainerCustomizer, which is not really nice thing to do.

If you can live without tomat, you could replace tomcat with e.g. undertow and avoid this issue at all.

Answer 2

If you get a "connection resets" error, the problem could be in the Tomcat default connector maxSwallowSize attribute added from Tomcat 7.0.55 (ChangeLog)

From Apache Tomcat 8 Configuration Reference

maxSwallowSize: The maximum number of request body bytes (excluding transfer encoding overhead) that will be swallowed by Tomcat for an aborted upload. An aborted upload is when Tomcat knows that the request body is going to be ignored but the client still sends it. If Tomcat does not swallow the body the client is unlikely to see the response. If not specified the default of 2097152 (2 megabytes) will be used. A value of less than zero indicates that no limit should be enforced.

For Springboot embedded Tomcat declare a TomcatEmbeddedServletContainerFactory

Java 8:

@Bean
public TomcatEmbeddedServletContainerFactory tomcatEmbedded() {
    TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();
    tomcat.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {
        if ((connector.getProtocolHandler() instanceof AbstractHttp11Protocol<?>)) {
            //-1 for unlimited
            ((AbstractHttp11Protocol<?>) connector.getProtocolHandler()).setMaxSwallowSize(-1);
        }
    });
    return tomcat;
}

Java 7:

@Bean
public TomcatEmbeddedServletContainerFactory tomcatEmbedded() {
    TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();
    tomcat.addConnectorCustomizers(new TomcatConnectorCustomizer()  {
        @Override
        public void customize(Connector connector) {
            if ((connector.getProtocolHandler() instanceof AbstractHttp11Protocol<?>)) {
                //-1 for unlimited
                ((AbstractHttp11Protocol<?>) connector.getProtocolHandler()).setMaxSwallowSize(-1);
            }
        }
    });
    return tomcat;
}

Or in the Tomcat/conf/server.xml for 5MB

<Connector port="8080" protocol="HTTP/1.1"
       connectionTimeout="20000"
       redirectPort="8443"
       maxSwallowSize="5242880" />