springboot 實體參數校驗 validate 拋出javax.validation.ConstraintViolationException異常 統一處理

@ControllerAdvice
public class WebExceptionHandler {
    //處理Get請求中 使用@Valid 驗證路徑中請求實體校驗失敗后拋出的異常，詳情繼續往下看代碼
    @ExceptionHandler(BindException.class)
    @ResponseBody
    public Result BindExceptionHandler(BindException e) {
        String message = e.getBindingResult().getAllErrors().stream().map(DefaultMessageSourceResolvable::getDefaultMessage).collect(Collectors.joining());
        return Result.build(ResultCode.PARAM_ERROR.getCode(),message);
    }

    //處理請求參數格式錯誤 @RequestParam上validate失敗后拋出的異常是javax.validation.ConstraintViolationException
    @ExceptionHandler(ConstraintViolationException.class)
    @ResponseBody
    public Result ConstraintViolationExceptionHandler(ConstraintViolationException e) {
        String message = e.getConstraintViolations().stream().map(ConstraintViolation::getMessage).collect(Collectors.joining());
        return Result.build(ResultCode.PARAM_ERROR.getCode(),message);
    }

    //處理請求參數格式錯誤 @RequestBody上validate失敗后拋出的異常是MethodArgumentNotValidException異常。
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseBody
    public Result MethodArgumentNotValidExceptionHandler(MethodArgumentNotValidException e) {
        String message = e.getBindingResult().getAllErrors().stream().map(DefaultMessageSourceResolvable::getDefaultMessage).collect(Collectors.joining());
        return Result.build(ResultCode.PARAM_ERROR.getCode(),message);
    }
}

@Configuration
public class WebParamValidateConfig {

    @Bean
    public Validator validator() {
        ValidatorFactory validatorFactory = Validation.byProvider(HibernateValidator.class)
                .configure()
                //failFast的意思只要出現校驗失敗的情況，就立即結束校驗，不再進行后續的校驗。
                .failFast(true)
                .buildValidatorFactory();
        return validatorFactory.getValidator();
    }

    @Bean
    public MethodValidationPostProcessor methodValidationPostProcessor() {
        MethodValidationPostProcessor methodValidationPostProcessor = new MethodValidationPostProcessor();
        methodValidationPostProcessor.setValidator(validator());
        return methodValidationPostProcessor;
    }

}