java ControllerAdvice不处理引发的异常

Question

在我的InvitationService文件中引发了一个异常

if (response != null && response.getStatus() == HttpStatus.SC_CONFLICT) {
        throw new UserAlreadyExistException("User Already Exists");
}

我定义了这样一个自定义异常

public class UserAlreadyExistException extends RuntimeException{
    public UserAlreadyExistException(String message) {
        super(message);
    }
}

这是我的控制器

@RestController
@RequestMapping("/invitations")
@Api(value = "Invitation APIs")
public class InvitationController {

 @Autowired
 InvitationService invitationService;

@PostMapping
@ApiOperation(value = "Invite tenant user")
public ResponseEntity<InvitationResponseDTO> inviteTenantUser(@RequestBody InvitationRequestDTO invitationRequestDTO) {

        invitationService.invite(invitationRequestDTO);
        return new ResponseEntity<>(new InvitationResponseDTO("success"), HttpStatus.OK);
    }
}

和ControllerAdvice类

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@ControllerAdvice()
public class ControllerExceptionHandler  {

    @ExceptionHandler(UserAlreadyExistException.class)
    public ResponseEntity<Object> handleUserAlreadyExistException(UserAlreadyExistException ex) {

        return new ResponseEntity<>(ex.getMessage(), HttpStatus.CONFLICT);
    }
}

问题是，当服务中发生异常时，仍然会抛出状态代码500，当我调试时，它不会通过ControllerExceptionHandler中的断点进入

Answer 1

您可以尝试创建这样的异常处理程序（将WebRequest作为输入参数添加到方法中）：

@ControllerAdvice
public class ControllerExceptionHandler {
  
    @ExceptionHandler(CustomException.class)
    public ResponseEntity<Object> handleInputException(CustomException exception, WebRequest webRequest) {

       // your code here with breakpoint
       
    }
}

Answer 2

我不确定，但是尝试在异常处理程序类上使用@RestControllerAdvice而不是@ControllerAdvice

@RestControllerAdvice
public class ControllerExceptionHandler  {

  @ExceptionHandler(value = UserAlreadyExistException.class)
  public ResponseEntity<Object> 
  handleUserAlreadyExistException(UserAlreadyExistException ex) {

      return new ResponseEntity<>(ex.getMessage(), HttpStatus.CONFLICT);
  }
}