Turn off Tomcat's static resource cache (written for Spring Boot 1.3.5)

TomcatNoCacheCustomizer.java

import org.apache.catalina.Context;
import org.apache.catalina.webresources.StandardRoot;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatContextCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.stereotype.Component;

@Component
public class TomcatNoCacheCustomizer implements EmbeddedServletContainerCustomizer {

	@Override
	public void customize(ConfigurableEmbeddedServletContainer container) {
		if (container instanceof TomcatEmbeddedServletContainerFactory) {
			TomcatEmbeddedServletContainerFactory factory = (TomcatEmbeddedServletContainerFactory) container;
			factory.addContextCustomizers(new TomcatContextCustomizer() {

				@Override
				public void customize(Context context) {
					StandardRoot resources = new StandardRoot(context);
					resources.setCachingAllowed(false);
					context.setResources(resources);
				}
			});
		}
	}
}