@ControllerAdvice 不捕获抛出的异常

Question

I use java spring. I try to use ControllerAdvice in my project as a global event handler:

@ControllerAdvice
public class ExceptionsHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(RestClientException.class)
    public void RestClientException(RestClientException ex)
    {
        System.out.println("RestClientException" + ex.getMessage());
    }

    @ExceptionHandler
    public void Exception(Exception ex)
    {
        System.out.println("Exception" + ex.getMessage());
    }
}

In this function I create and throw an exception:

@Component
@RequiredArgsConstructor
public class Scheduler {

    public void schedule() throws JsonProcessingException, Exception {
            throw new Exception();
    }
}

And:

@Component
@RequiredArgsConstructor
public class RestfulReaderServiceImpl implements RestfulReaderService {

    public String getData(String url) throws RestClientException {
        throw new RestClientException();
    }
}   

But when those functions are fired and exceptions are thrown the exception handlers in class ExceptionsHandler does not execute.

Any idea why exception handlers in ExceptionsHandler class not catches and handles the exceptions?

Answer 1

@ControllerAdvice only handles exceptions thrown from Controller methods ie methods annotated with @RequestMapping or any of its shortcut annotations ( @GetMapping etc.). You can check this by calling your exception throwing method from any @RequestMapping annotated method.