java全局处理异常

使用@ControllerAdvice横切所有controller，再使用@ExceptionHandler处理各种异常

@ControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

	private GlobalExceptionHandler() {
	}
	
	
	@ExceptionHandler({MethodArgumentNotValidException.class})
	public ResponseEntity> methodArgumentNotValidException(MethodArgumentNotValidException e) {
		List errors = e.getBindingResult().getFieldErrors();
		StringBuilder builder = new StringBuilder();
		for(int i=0; i result = Result.error("12345",builder.toString());
		log.error("Params valid exception={}",e.getMessage(),e);
		return new ResponseEntity<>(result,HttpStatus.BAD_REQUEST);
	}
	// 其他需要单独处理的exception自行补充

	
	 @ExceptionHandler(Exception.class)
	 public ResponseEntity> globalHandle(Exception e) {
		String message = "系统异常";
		if(!StringUtils.isEmpty(e.getMessage())) {
			message = e.getMessage();
		}
		Result result = Result.error("11111",message );
		log.error("unknown exception={}",e.getMessage(),e);
		return new ResponseEntity<>(result,HttpStatus.INTERNAL_SERVER_ERROR);
	}
}