Spring Boot@ControllerAdvice部分工作，对于自定义异常不工作

Question

在Spring Boot1.5.3中，我的@ControllerAdvice注释了ExceptionHandler有一个特殊的情况。它捕获任何异常默认异常，但如果我抛出一个自定义异常，它不会激发。

ExceptionHandler：

@ControllerAdvice
public class ResponseEntityExceptionHandler {

@ExceptionHandler({ HttpMessageNotReadableException.class })
protected ResponseEntity<ErrorModel> handleInvalidJson(RuntimeException e, WebRequest request) {
    return new ResponseEntity<ErrorModel>(new ErrorModel().message("Could not parse JSON."), HttpStatus.BAD_REQUEST);
}

@ExceptionHandler({ NumberFormatException.class })
protected ResponseEntity<ErrorModel> handleInvalidRequest(RuntimeException e, WebRequest request) {
    return new ResponseEntity<ErrorModel>(new ErrorModel().message("Invalid request parameter."), HttpStatus.BAD_REQUEST);
}

@ExceptionHandler({ CannotCreateTransactionException.class })
protected ResponseEntity<ErrorModel> handleTransactionCreationException(RuntimeException e, WebRequest request) {
    return new ResponseEntity<ErrorModel>(new ErrorModel().message("Error connecting to the database, please make sure it is still available."), HttpStatus.BAD_REQUEST);
}

@ExceptionHandler({ NotFoundException.class })
protected ResponseEntity<ErrorModel> handleApiException(RuntimeException e, WebRequest request) {
    return new ResponseEntity<ErrorModel>(new ErrorModel().message(e.getMessage()), HttpStatus.NOT_FOUND);
}
}

最上面的3个异常都被捕获并按预期处理，但最下面的异常由默认的Spring-Boot ExceptionHandler处理。这是我在控制器内部抛出的自定义异常：

public ResponseEntity<?> deleteActor(@ApiParam(value = "Used to identify a single actor.", required = true) @PathVariable("actor_id") Integer actorId, @RequestHeader("Accept") String accept) throws Exception {
Actor actor = actorRepository.findOne(actorId);
if (actor == null) {
    throw new NotFoundException(404, "Not found");
}
actorRepository.delete(actorId);
return new ResponseEntity<Void>(HttpStatus.NO_CONTENT);
}

我试着抛出了一个像这样的顶级异常：

public ResponseEntity<?> readActor(@ApiParam(value = "Used to identify a single actor.", required = true) @PathVariable("actor_id") Integer actorId, @RequestHeader("Accept") String accept) throws Exception {
    Actor actor = actorRepository.findOne(actorId);
    if (actor == null) {
        throw new NumberFormatException("");
    }
    return new ResponseEntity<Actor>(actor, HttpStatus.OK);
}

这些都处理得很好...

tomcat日志还显示：

2017-06-05 11:30:20.080  INFO 9076 --- [           main] .m.m.a.ExceptionHandlerExceptionResolver : Detected @ExceptionHandler methods in responseEntityExceptionHandler

public class NotFoundException extends ApiException {
private int code;
public NotFoundException (int code, String msg) {
    super(code, msg);
    this.code = code;
}
}

public class ApiException extends Exception{
private int code;
public ApiException (int code, String msg) {
    super(msg);
    this.code = code;
}
}

关于为什么自定义异常避免被ExceptionHandler检测到有什么想法吗？

如有必要，我很乐意提供补充资料。

Answer 1

对于这种特殊情况，答案是使用exception而不是runtimeexception，因为NotFoundException仅从Exception继承。

其他值得注意的事项：

>

要捕获所有异常，可以使用@exceptionhandler(exception.class)