Invalid requests shows implementation details with embedded Jetty

[oleborup]

Invalid requests shows implementation details with embedded Jetty

[wilkinsona]

With Spring Boot 3.2 and Jetty 12, you can suppress the body of an error that occurs in a situation where it cannot be handled by Spring Boot with the following customizer and error handler:

@Bean
JettyServerCustomizer customizer() {
	return (server) -> {
		ErrorHandler errorHandler = new NoBodyErrorHandler();
		server.setErrorHandler(errorHandler);
		server.getHandlers().forEach((handler) -> {
			if (handler instanceof WebAppContext webAppContext) {
				webAppContext.addConfiguration(new AbstractConfiguration(new AbstractConfiguration.Builder()) {

					@Override
					public void configure(WebAppContext context) throws Exception {
						context.setErrorHandler(errorHandler);
					}
					
				});
			}
		});
	};
}

static class NoBodyErrorHandler extends ErrorHandler {

	@Override
	protected void writeErrorHtml(Request request, Writer writer, Charset charset, int code, String message,
			Throwable cause, boolean showStacks) throws IOException {
	}

}

With this in place, all three tests in your sample should now pass.

[oleborup]

Works! Thanks @wilkinsona 🙏