控制器参数校验全局异常处理_参数校验异常，认证状态不能为空-优快云博客

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

@RestControllerAdvice
public class _ValidExceptionControllerAdvice extends BaseController {

    /*
    Jackson参数绑定异常
     */
    @ExceptionHandler(InvalidFormatException.class)
    public ResultVO<String> handleInvalidFormatException(InvalidFormatException e) {
        return fail("参数" + e.getValue() + "格式错误");
    }

    /*
    @RequestParam参数缺失
     */
    @ExceptionHandler(MissingServletRequestParameterException.class)
    public ResultVO<String> handleMissingServletRequestParameterException(MissingServletRequestParameterException e) {
        return fail("参数不能为空：" + e.getParameterName());
    }

    /*
    JSR-303参数校验失败
    */
    @ExceptionHandler(BindException.class)
    public ResultVO<String> handleBindException(BindException e) {
        List<FieldError> fieldErrors = e.getBindingResult().getFieldErrors();
        String errMsg = fieldErrors.stream()
                .map(fieldError -> fieldError.getField() + fieldError.getDefaultMessage())
                .collect(Collectors.joining(","));
        return fail("参数校验失败：" + errMsg);
    }

    /*
    JSR-303标准功能增强的额外参数校验（@Validated注解提供）
     */
    @ExceptionHandler(ConstraintViolationException.class)
    public ResultVO<String> handleConstraintViolationException(ConstraintViolationException e) {
        return fail("参数校验失败：" + e.getMessage());
    }

}