枚举类

使用 @EnumValue注解标识数据库字段

package com.example.enumpackage;

import com.baomidou.mybatisplus.annotation.EnumValue;
import com.fasterxml.jackson.annotation.JsonValue;

/**
 * @description: mybatis-plus通用枚举 ||性别
 * @author: GuoTong
 * @createTime: 2021-08-21 20:38
 * @since JDK 1.8 OR 11
 **/
public enum GenderTypeEnum {

    WOMAN(0, "女"),
    MAN(1, "男"),
    SECURITY(2, "保密");

    //数据库存入的性别字段：0标识女 ，1标识男，2标识保密
    @EnumValue
    @JsonValue    //标记响应json值
    private Integer gender;

    private String chinaMsg;

    GenderTypeEnum(int gender, String chinaMsg) {
        this.gender = gender;
        this.chinaMsg = chinaMsg;
    }

    @Override
    public String toString() {
        return "GenderTypeEnum{" +
                "gender=" + gender +
                ", chinaMsg='" + chinaMsg + '\'' +
                '}';
    }
}

建立枚举解析策略

  @Bean
    public Jackson2ObjectMapperBuilderCustomizer customizer(){
        return builder -> builder.featuresToEnable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING);
    }

回头再枚举数据库字段加上解析注解： @JsonValue //标记响应json值

测试

 @Test
    public void TestCommonEnum() {
        //通用枚举|将性别转化为1男，0女去查询
        QueryWrapper<User> wrapper = new QueryWrapper<>();
        wrapper.eq("gender", GenderTypeEnum.WOMAN);
        List<User> users = service.list(wrapper);
        System.out.println(users);
    }

结果：

[{"id":5,"name":"蚂蚁金服","gender":"0","age":23,"address":"月牙湾","qq":"23435546","email":"gsgrv@co.com"},{"id":7,"name":"瑞雯","gender":"0","age":23,"address":"召唤师峡谷","qq":"9090960","email":"ruiwen@13.com"},{"id":8,"name":"汤姆","gender":"0","age":23,"address":"上海市","qq":"8967340","email":"tom@google.com"},{"id":9,"name":"刘德华","gender":"0","age":233,"address":"重庆市","qq":"23464575","email":"wangfei@qq.cn"}]