Increase HTTP Post maxPostSize in Spring Boot

Question

I've got a fairly simple Spring Boot web application, I have a single HTML page with a form with enctype="multipart/form-data". I'm getting this error:

The multi-part request contained parameter data (excluding uploaded files) that exceeded the limit for maxPostSize set on the associated connector.

I'm using Spring Boot's default embedded tomcat server. Apparently the default maxPostSize value is 2 megabytes. Is there any way to edit this value? Doing so via application.properties would be best, rather than having to create customized beans or mess with xml files.

Answer 1

In application.properties file write this:

# Max file size. spring.http.multipart.max-file-size=1Mb # Max request size. spring.http.multipart.max-request-size=10Mb 

Adjust size according to your need.

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Update

Note: As of Spring Boot 2, however you can now do

# Max file size. spring.servlet.multipart.max-file-size=1MB # Max request size. spring.servlet.multipart.max-request-size=10MB 

Appendix A. Common application properties - Spring

Answer 2

Found a solution. Add this code to the same class running SpringApplication.run.

// Set maxPostSize of embedded tomcat server to 10 megabytes (default is 2 MB, not large enough to support file uploads > 1.5 MB) @Bean EmbeddedServletContainerCustomizer containerCustomizer() throws Exception {     return (ConfigurableEmbeddedServletContainer container) -> {         if (container instanceof TomcatEmbeddedServletContainerFactory) {             TomcatEmbeddedServletContainerFactory tomcat = (TomcatEmbeddedServletContainerFactory) container;             tomcat.addConnectorCustomizers(                 (connector) -> {                     connector.setMaxPostSize(10000000); // 10 MB                 }             );         }     }; } 

Edit: Apparently adding this to your application.properties file will also increase the maxPostSize, but I haven't tried it myself so I can't confirm.

multipart.maxFileSize=10Mb # Max file size. multipart.maxRequestSize=10Mb # Max request size.