[tomcat] How to set the max size of upload file

None of the configuration above worked for me with a Spring application.

Implementing this code in the main application class (the one annotated with @SpringBootApplication) did the trick.

@Bean 
EmbeddedServletContainerCustomizer containerCustomizer() throws Exception {
     return (ConfigurableEmbeddedServletContainer container) -> {

              if (container instanceof TomcatEmbeddedServletContainerFactory) {

                  TomcatEmbeddedServletContainerFactory tomcat = (TomcatEmbeddedServletContainerFactory) container;
                  tomcat.addConnectorCustomizers(
                          (connector) -> {
                              connector.setMaxPostSize(10000000);//10MB
                          }
                  );
              }
    };
}

You can change the accepted size in the statement:

connector.setMaxPostSize(10000000);//10MB

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