Spring MVC - RestTemplate launch exception when http 404 happens

Question

I have a rest service which send an 404 error when the resources is not found. Here the source of my controller and the exception which send Http 404.

@Contr         


        

Answer 1

Since it's 2018 and I hope that when people say "Spring" they actually mean "Spring Boot" at least, I wanted to expand the given answers with a less dust-covered approach.

Everything mentioned in the previous answers is correct - you need to use a custom ResponseErrorHandler. Now, in Spring Boot world the way to configure it is a bit simpler than before. There is a convenient class called RestTemplateBuilder. If you read the very first line of its java doc it says:

Builder that can be used to configure and create a RestTemplate. Provides convenience methods to register converters, error handlers and UriTemplateHandlers.

It actually has a method just for that:

new RestTemplateBuilder().errorHandler(new DefaultResponseErrorHandler()).build();

On top of that, Spring guys realized the drawbacks of a conventional RestTemplate long time ago, and how it can be especially painful in tests. They created a convenient class, TestRestTemplate, which serves as a wrapper around RestTemplate and set its errorHandler to an empty implementation:

private static class NoOpResponseErrorHandler extends 
       DefaultResponseErrorHandler {

    @Override
    public void handleError(ClientHttpResponse response) throws IOException {
    }

}