spring项目结构设计-全局异常处理

spring全局异常处理使用注解RestControllerAdvice、ControllerAdvice。

• BindException、MethodArgumentNotValidException是hibernate校验失败抛出的异常。
• BasicException是自定义的全局统一异常，其中属性error可以提取出异常信息。

@RestControllerAdvice
public class BassExceptionHandler {
    private static final Logger logger = LoggerFactory.getLogger(BassExceptionHandler.class);

    @ExceptionHandler(value = BindException.class)
    @ResponseStatus(value = HttpStatus.BAD_REQUEST, code = HttpStatus.BAD_REQUEST)
    public BassResult<String> handleBadParam(BindException ex) {
        logger.error(ex.getMessage());
        String result = ex.getBindingResult().getAllErrors().parallelStream().map(object -> object.getDefaultMessage())
                .collect(Collectors.joining(", "));
        return new BassResult<String>().builder().error(BassError.BAD_PARAM, result).build();
    }

    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    @ResponseStatus(value = HttpStatus.BAD_REQUEST, code = HttpStatus.BAD_REQUEST)
    public BassResult<String> handleMethodArgumentNotValid(MethodArgumentNotValidException ex) {
        logger.error(ex.getMessage());
        String result = ex.getBindingResult().getAllErrors().parallelStream().map(object -> object.getDefaultMessage())
                .collect(Collectors.joining(", "));
        return new BassResult<String>().builder().error(BassError.BAD_PARAM, result).build();
    }

    @ExceptionHandler(value = HttpMediaTypeNotSupportedException.class)
    @ResponseStatus(value = HttpStatus.UNSUPPORTED_MEDIA_TYPE, code = HttpStatus.UNSUPPORTED_MEDIA_TYPE)
    public BassResult<String> handleHttpMediaTypeNotSupported(HttpMediaTypeNotSupportedException ex) {
        logger.error(ex.getMessage());
        return new BassResult<String>().builder().error(BassError.UNSUPPORTED_MEDIA_TYPE, ex.getMessage()).build();
    }

    @ExceptionHandler(value = BassException.class)
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR, code = HttpStatus.INTERNAL_SERVER_ERROR)
    public BassResult<String> handleBasicException(BassException ex) {
        logger.error(ex.toString());
        return new BassResult<String>().builder().error(ex.getError(), ex.getMessage()).build();
    }

    @ExceptionHandler(value = Exception.class)
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR, code = HttpStatus.INTERNAL_SERVER_ERROR)
    public BassResult<String> handleException(Exception ex) {
        logger.error(ex.getMessage());
        return new BassResult<String>().builder().error(BassError.INTERNAL_SERVER_ERROR, ex.getMessage()).build();
    }
}