Spring Rest Exception Handling

build.gradle

compile('org.springframework.boot:spring-boot-starter-web')

GreetingController.java

@RestController
public class GreetingController {

    @RequestMapping("/my/rest/exception")
    public @ResponseBody ResponseEntity<String> myException() {
        if (true)
            throw new MyRestException("should see me");
        return new ResponseEntity<String>("don't see me", HttpStatus.OK);
    }

}

MyRestException.java

public class MyRestException extends RuntimeException {
    public MyRestException(String s) {
        super(s);
    }
}

MyRestExceptionHandler.java

@ControllerAdvice
public class MyRestExceptionHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(value = {MyRestException.class})
    protected ResponseEntity<Object> handleConflict(RuntimeException ex, WebRequest webRequest) {
        String bodyOfResponse = "Well that's another fine mess you got me into";
        return handleExceptionInternal(ex, bodyOfResponse, new HttpHeaders(), HttpStatus.CONFLICT, webRequest);
    }

}