Mybatis-Plus通用枚举 -基于jackson(Springboot-web内置)
2021/8/21 23:35:59
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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"}]
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