Spring自定义异常

# 自定义异常

创建自定义异常类；

继承自RuntimeException或其子类；

public class CustomException extends RuntimeException {

    public CustomException() {
        super();
    }

    public CustomException(String message) {
        super(message);
    }

    public CustomException(String message, Throwable cause) {
        super(message, cause);
    }
}

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Spring控制器处理异常；

@ControllerAdvice表示全局异常处理器；

@ExceptionHandler处理自定义异常；

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(CustomException.class)
    public ResponseEntity<String> handleCustomException(CustomException ex) {
        return new ResponseEntity<>(ex.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

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