java - 从自定义默认 Spring 验证中删除批量

Question

我正在使用从 messages.properties 读取的自定义 @NotNull 消息编写一些基本的属性验证。这些消息可以很好地阅读，但是大部分默认的 Spring 错误消息仍然如下:

 "Validation failed for argument at index 0 in method: public java.lang.String uk.co.schedulerapi.Scheduler_Rest_Controller.bookAppointment(uk.co.apidefinitions.BookAppointment) throws java.lang.Exception, with 1 error(s): [Field error in object 'bookAppointment' on field 'windowStart': rejected value [null]; codes [NotNull.bookAppointment.windowStart,NotNull.windowStart,NotNull.java.lang.String,NotNull]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [bookAppointment.windowStart,windowStart]; arguments []; default message [windowStart]]; default message [windowStart parameter is required]] "

是否可以删除所有错误消息并保留我的自定义消息而不进行字符串解析？

Answer 1

是的，您可以使用全局异常处理程序来做到这一点。这是处理方法。

@Order(Ordered.HIGHEST_PRECEDENCE)
@ControllerAdvice
public class GlobalExceptionHandler {

private static final Logger logger = LogManager.getLogger(GlobalExceptionHandler.class);


@ExceptionHandler({MethodArgumentNotValidException.class, ConstraintViolationException.class})
public void handleException(HttpServletResponse response, Exception ex) {
    //build your custom message
    prepareErrorResponse(response,UNPROCESSABLE_ENTITY,yourCustomMessage);
}



private void prepareErrorResponse(HttpServletResponse response, HttpStatus status, String apiError) {
    response.setStatus(status.value());
    try(PrintWriter writer = response.getWriter()) {
        new ObjectMapper().writeValue(writer, apiError);
    } catch (IOException ex) {
        logger.error("Error writing string to response body", ex);
    }
}