Java配置自定义校验

1、自定义注解State

message、groups、payload

package com.zhang.anno;import com.zhang.validartion.StateValidation;
import jakarta.validation.Constraint;
import jakarta.validation.Payload;import java.lang.annotation.*;import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;/*** @program: big_event* @description: TODO* @author: Mr.Zhang* @create: 2024-04-06 14:18**/@Documented //元注解
@Retention(RUNTIME) //元注解
@Target({FIELD}) //元注解
@Constraint(validatedBy = {StateValidation.class}//指定提供校验器规则的类
)
public @interface State {//提供校验失败后的提示消息String message() default "state参数的值只能是已发布或者草稿";//指定分组Class<?>[] groups() default {};//负载 获取到state注解的附加信息Class<? extends Payload>[] payload() default {};}

2、自定义校验数据的类StateValidation

package com.zhang.validartion;import com.zhang.anno.State;
import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;/*** @program: big_event* @description: TODO* @author: Mr.Zhang* @create: 2024-04-06 14:25**/
//public class StateValidation implements ConstraintValidator<给哪个注解提供检验规则,检验的数据类型> {
//
//}
public class StateValidation implements ConstraintValidator<State,String> {/**** @param value 将来要检验的数据* @param context* @return  如果返回false，则表示校验失败，如果返回true，则表示校验成功*/@Overridepublic boolean isValid(String value, ConstraintValidatorContext context) {//提供校验规则if (value == null) {return false;}if ("已发布".equals(value) || "草稿".equals(value)) {return true;}//如果校验失败，则提供提示信息return false;}
}