spring之自定义注解

@Target({ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy =MyConstraintValidator.class )
public @interface MyAnnotation {
    String message() default "王某自定义注解";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};
}

@Slf4j
public class MyConstraintValidator implements ConstraintValidator<MyAnnotation,Object> {
    private final String MOBILE_REGEXP = "^[1][3,4,5,6,7,8,9][0-9]{9}$";
    @Override
    public void initialize(MyAnnotation constraintAnnotation) {
        log.info("初始化失败！");
    }



    @Override
    public boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {
//        if(flag){
//            //TODO 做自己的验证 业务操作
//            //TRUE标识返回成功
//        }
        String strValue = String.valueOf(value);
        if (ObjectUtils.isEmpty(value)) {
            return Pattern.matches(MOBILE_REGEXP, strValue);
        }
        return false;
    }
}

public class AdminUser {
    private String name;
    private String password;
    @MyAnnotation
    private String phone;

}

注解介绍请看;https://www.cnblogs.com/wangbiaohistory/p/12522153.html