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  • 处理Mybatis返回的结果集为Map类型

    最有用到mybatis返回一个map结果集,然后就针对性的在网上找了一些相关大牛的总结:1.https://www.cnblogs.com/jwdd/p/10046270.html
    2.https://www.codercto.com/a/33475.html 然后经过自己的测试终于可以应用实际业务中
    1、如果你确定返回的数据只有一条,你可以这样整 xml中:
    <select id="searchncomedateByInvestID" resultMap="java.util.HashMap">
        select
        t1.invest_id                      ,
        cast(t1.modify_time AS DATE) modify_time
        from t_c_wh_redeeminfo t1
        where 1=1
        and t1.invest_id =#{investId}
    </select>
    dao中:
    Map<String,Object> searchncomedateByInvestID(investId);
    2、如果返回的是多条数据,可以这样整
    xml中:
    <resultMap id="getAllSetDaysResult"   type="HashMap">
            <result property="investid" column="invest_id" jdbcType="VARCHAR" />
            <result property="modifytime" column="modify_time" jdbcType="DATE"/>
    
    </resultMap>
    <select id="searchncomedateByInvestID" parameterType="java.util.List" resultMap="getAllSetDaysResult">
        select
        t1.invest_id                      ,
        cast(t1.modify_time AS DATE) modify_time
        from t_c_wh_redeeminfo t1
        where 1=1
        and t1.invest_id in
        <foreach collection="list" item="investId" index="index"  open="(" close=")" separator=",">
            #{investId}
        </foreach>
    </select>
    dao中:
    List<Map<String, Object>> searchncomedateByInvestID(List<String> preinvestList);

    实际应用:

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  • 原文地址:https://www.cnblogs.com/wdzhz/p/11602941.html
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