spring boot3.0自定义校验注解并以文章状态校验为例

package com.YJZE.anno;
import com.YJZE.validation.StateValidation;
import jakarta.validation.Constraint;
import jakarta.validation.Payload;
import java.lang.annotation.*;
@Documented//元注解
@Target( ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = {StateValidation.class})
public @interface State {
    String message() default "state参数只能是草稿或者已发布";
    Class<?>[] groups() default {};
    //负载 获取到State注解的附加信息
    Class<? extends Payload>[] payload() default {};
}

package com.YJZE.validation;
import com.YJZE.anno.State;
import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;
public class StateValidation implements ConstraintValidator<State,String> {
    /**
     *
     * @param s
     * @param constraintValidatorContext
     * @return
     */
    @Override
    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
        if(s == null){
            return false;
        }
        if(s.equals("已发布") || s.equals("草稿")){
            return true;
        }
        return false;
    }
}

import com.YJZE.anno.State;
import jakarta.validation.constraints.NotEmpty;
import jakarta.validation.constraints.NotNull;
import jakarta.validation.constraints.Pattern;
import lombok.Data;
import org.hibernate.validator.constraints.URL;
import java.time.LocalDateTime;
@Data
public class Article {
    private Integer id;//主键ID
    @URL
    private String coverImg;//封面图像
    @State
    private String state;//发布状态 已发布|草稿
    @NotNull
    private Integer categoryId;//文章分类id
    private Integer createUser;//创建人ID
    private LocalDateTime createTime;//创建时间
    private LocalDateTime updateTime;//更新时间
}