自定义注解验证手机

package com.v.common.annotations;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

/**
 * @Description: 验证手机，只要验证手机号码为11位，且以1开头
 * @Author:
 * @Date: 2022/5/18 11:13
 **/
@Constraint(validatedBy = {PhoneNumberConstraint.class})
@Documented
@Target({ElementType.FIELD,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface PhoneNumberValid {
    String message() default "手机号不合法";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

package com.v.common.annotations;

import com.v.common.utils.StringUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

/**
 * @Description: 校验手机号码
 * @Author: 
 * @Date: 2022/5/18 11:19
 **/
public class PhoneNumberConstraint implements ConstraintValidator<PhoneNumberValid, String> {
    @Override
    public void initialize(PhoneNumberValid constraintAnnotation) {

    }

    @Override
    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
        return sizeIsTrue(s);
    }

    /**
     * 只要验证手机号码为11位，且以1开头
     * @param s
     * @return
     */
    private Boolean sizeIsTrue(String s) {
        if (StringUtils.isNotBlank(s)) {
            if (s.length() == 11 && s.matches("^1[0-9]{10}$")) {
                return true;
            } else {
                return false;
            }
        } else {
            return true;
        }
    }
}