validation-api 自定義校驗的兩種方式

第一種：

package com.boot.mytt.core.validation.annotation;

import org.hibernate.validator.constraints.CompositionType;
import org.hibernate.validator.constraints.ConstraintComposition;
import javax.validation.Constraint;
import javax.validation.Payload;
import javax.validation.ReportAsSingleViolation;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Pattern;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * @author renwq
 * @date 2020/5/25
 */
@ConstraintComposition(CompositionType.AND)
@Pattern(regexp = "1[3|4|5|7|8][0-9]\\d{8}")
@NotBlank
@Documented
@Constraint(validatedBy = {})
@Target({METHOD, FIELD, CONSTRUCTOR, PARAMETER})
@Retention(RUNTIME)
@ReportAsSingleViolation
public @interface Telephone {
    String message() default "手機號校驗錯誤";

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

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

第二種

package com.boot.mytt.core.validation.annotation;


import com.boot.mytt.core.validation.validator.PhoneValidator;

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

/**
 * @author renwq
 * @date 2020/5/25
 */
@Documented
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE, ElementType.CONSTRUCTOR, ElementType.PARAMETER, ElementType.TYPE_USE})
@Retention(RetentionPolicy.RUNTIME)
@Repeatable(Phone.List.class)
@Constraint(validatedBy = {PhoneValidator.class})
public @interface Phone {

    String message() default "手機格式不正確";

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

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

    /**
     * 手機號的驗證規則
     */
    String regexp() default "^1([3-9])\\d{9}$";

    @Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE, ElementType.CONSTRUCTOR, ElementType.PARAMETER, ElementType.TYPE_USE})
    @Retention(RetentionPolicy.RUNTIME)
    @Documented
    public @interface List {
        Phone[] value();
    }
}

package com.boot.mytt.core.validation.validator;

import com.boot.mytt.core.validation.annotation.Phone;

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

/**
 * @author renwq
 * @date 2020/5/25
 */
public class PhoneValidator implements ConstraintValidator<Phone, String> {

    private String regexp;

    @Override
    public void initialize(Phone constraintAnnotation) {
        this.regexp = constraintAnnotation.regexp();
    }

    @Override
    public boolean isValid(String value, ConstraintValidatorContext constraintValidatorContext) {
        if (value == null) {
            return true;
        } else {
            return value.matches(regexp);
        }
    }

}