这篇文章主要介绍“mybatis怎么利用resultMap复杂类型list映射”,在日常操作中,相信很多人在mybatis怎么利用resultMap复杂类型list映射问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”mybatis怎么利用resultMap复杂类型list映射”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!
<resultMap id="internetDataDTO" type="com.mdm.skr.mdm_common.dto.StrategyInternetDataDTO"> <id property="id" column="id" jdbcType="INTEGER"/> <result property="internetData" column="internet_data" jdbcType="INTEGER"/> <collection property="userList" ofType="com.mdm.skr.mdm_common.entity.SysUser"> <id property="id" column="id" jdbcType="INTEGER"/> <result property="number" column="number" jdbcType="VARCHAR"/> <result property="pushToken" column="push_token" jdbcType="VARCHAR"/> <result property="wsChannelId" column="ws_channel_id" jdbcType="VARCHAR"/> </collection> </resultMap> <select id="selectInternetDataDTOByInternetDataIdList" resultMap="internetDataDTO"> SELECT sidu.id, sidu.internet_data, su.id, su.number, su.push_token, su.ws_channel_id FROM strategy_internet_data_user sidu JOIN skr_user su on su.id = sidu.user_id WHERE sidu.id IN <foreach collection="internetDataIdList" open="(" close=")" separator="," item="internetDataId"> #{internetDataId} </foreach> </select>
@Data public class StrategyInternetDataDTO { private Integer id ; private Integer internetData ; private List<SysUser> userList ; }
@Data public class SysUser { private Integer id; private String number; private String pushToken; private String wsChannelId ; }
List<StrategyInternetDataDTO> selectInternetDataDTOByInternetDataIdList(@Param("internetDataIdList") List<Integer> internetDataIdList);
<resultMap id="internetDataDTO" type="com.mdm.skr.mdm_common.dto.StrategyInternetDataDTO"> <id property="id" column="id" jdbcType="INTEGER"/> <result property="internetData" column="internet_data" jdbcType="INTEGER"/> <collection property="userIdList" ofType="java.lang.Integer" javaType="java.util.List"> <result column="userId"/> </collection> </resultMap> <select id="selectInternetDataDTOByInternetDataIdList" resultMap="internetDataDTO"> SELECT sidu.id, sidu.internet_data, sidu.user_id userId FROM strategy_internet_data_user sidu WHERE sidu.id IN <foreach collection="internetDataIdList" open="(" close=")" separator="," item="internetDataId"> #{internetDataId} </foreach> </select>
@Data public class StrategyInternetDataDTO { private Integer id ; private Integer internetData ; private List<Integer> userIdList ; }
List<StrategyInternetDataDTO> selectInternetDataDTOByInternetDataIdList(@Param("internetDataIdList") List<Integer> internetDataIdList);
User selectUserInfo(Integer userId); <select id = "selectUserInfo" parameterType = "java.lang.Inte" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userId = #{userId , jdbcType=INTEGER} </select>
User selectUserInfo(Integer userId, String userName, String userPass); <select id = "selectUserInfo" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userId = #{arg0} and userName = #{arg1} and userPass = #{arg2} </select>
User selectUserInfo(@Param("userName")String userName, @Param("userPass")String userPass); <select id = "selectUserInfo" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userName = #{userName} and userPass = #{userPass} </select>
Map<String,Object> map = new HashMap(); map.put("userName","张三"); map.put("userPass","123"); User user = userMapper.selectUserInfo(map); User selectUserInfo(Map<String,Object> map); <select id="selectUserInfo" parameterType="java.util.Map" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userName = #{userName} and userPass = #{userPass} </select>
User user = new User(); user.setUserName("张三"); user.setUserPass("123"); User user = UserMapper.selectUserInfo(user); User selectUserInfo(User record); <select id="selectUserInfo" parameterType="com.LiuXu.bean.User" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userName = #{userName} and userPass = #{userPass} </select>
List<User> list = new ArrayList<>(); list.add(user1); list.add(user2); List<User> userList = userMapper.selectUserInfo(list); List<User> selectUserInfo(List<User> record); <select id="selectUserInfo" resultMap="BaseResultMap" > select <include refid="Base_Column_List" /> from user where userId in <foreach item="item" index="index" collection="list" open="(" separator="," close=")"> #{item} </foreach> </select>
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