Setting 'relaxedQueryChars' for embedded Tomcat

Question

How can I set relaxedQueryChars for Spring Boot embedded Tomcat?

The connector attribute described here, but Spring Boot documentation has no such param

Answer 1

If you are using Spring Boot 2.x then you need to use WebSeerverFactoryCustomizer as given below.

@Bean
public WebServerFactoryCustomizer 
    containerCustomizer(){
    return new EmbeddedTomcatCustomizer();
}

private static class EmbeddedTomcatCustomizer implements WebServerFactoryCustomizer {

    @Override
    public void customize(TomcatServletWebServerFactory factory) {
        factory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {
            connector.setAttribute("relaxedPathChars", "<>[\\]^`{|}");
            connector.setAttribute("relaxedQueryChars", "<>[\\]^`{|}");
        });
    }
}