mybatis的mapper返回map結果集

mybatis系列

• SpringBoot集成mybatis

• mybatis的statement的解析與加載

• mybatis如何根據mapper接口生成其實現類

• mybatis的mapper返回map結果集

• mybatis結果的組裝

經過MapKey指定map的key值

@MapKey("id")
Map<Long, UserInfo> getUserInfoMap();

@MapKey("id")
Map<Long, Map<String,Object>> getUserValueMap();

map的value爲java類

<resultMap id="UserResultMap" type="com.xixicat.domain.UserInfo">
        <result property="id" column="id" />
        <result property="username" column="username" />
        <result property="sex" column="sex" />
    </resultMap>
<select id="getUserInfoMap" resultMap="UserResultMap">
   select id,username,sex from user_info
</select>

map的value爲map

<select id="getUserValueMap" resultType="map" >
        select id,username,sex from user_info
        from user_info
</select>