Spring boot starter web @ControllerAdvice annotation does not work without @RestController annotation

Question

RESOLVE

in a rest api application, the return type of the exception handling method must be ResponseEntityor annotate the method @ResponseBodyso that spring boot can serialize http.

UPDATE

starting class:

@SpringBootApplication
@ComponentScan
@EnableAutoConfiguration
@EnableConfigurationProperties
@EnableTransactionManagement//TODO remove this line if not needed
public class Application extends SpringBootServletInitializer{

private static Class<Application> applicationClass= Application.class;
public static void main(String[] args) {
    SpringApplication.run(applicationClass, args);
}

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
    return builder.sources(applicationClass);
}
}

I used @ControllerAdviceto handle global exception handling in spring loading the start network, and I had such a strange problem.

spring https://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc, , @ControllerAdivce . , , , RunTimeException.

:

@ControllerAdvice
public class GlobalDefaultExceptionHandler {

@ExceptionHandler(value = RuntimeException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
public RestEntity handleException(HttpServletRequest req, RuntimeException ex) {
    RestEntity restEntity=new RestEntity();
    Message message=new Message();
    message.setCode(1000);
    message.setMessage("Something wrong with the server");
    restEntity.setMessage(message);
    return restEntity;
}
}

, @ExceptionHandler , GlobalDefaultExceptionHandler.

, . - ?

, , @RestControoler GlobalDefaultExceptionHandler, . ...

?

Answer 1

@EnableWebMvc .

:

@SpringBootApplication
@ComponentScan(basePackages = {
....
})
public class Application extends SpringBootServletInitializer { ... }

ControllerAdvice:

@ControllerAdvice
public class ErrorHandlingController { ... }