Spring MVC mapping view for Google-GSON?

Question

Does anyone know if there is a Spring MVC mapping view for Gson? I\'m looking for something similar to org.springframework.web.servlet.view.json.MappingJacksonJsonView.

Answer 1

aweigold got me most of the way there, but to concretely outline a solution for Spring 3.1 Java based configuration, here's what I did.

Grab GsonHttpMessageConverter.java from the spring-android-rest-template project.

Register your GsonHttpMessageConverter with the message converters in your MVC config.

@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
  @Override
  public void configureMessageConverters(List> converters) {
    converters.add(new GsonHttpMessageConverter());
  }
}

The Spring docs outline this process, but aren't crystal clear. In order to get this to work properly, I had to extend WebMvcConfigurerAdapter, and then override configureMesageConverters. After doing this, you should be able to do the following in your controller method:

@Controller
public class AppController {
  @RequestMapping(value = "messages", produces = MediaType.APPLICATION_JSON_VALUE)
  public List getMessages() {
    // .. Get list of messages
    return messages;
  }
}

And voila! JSON output.