一、父查詢BaseChildResultMap：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.dayhr.web.module.hr.td.elearn.mapper.TrainerMapper" ><!-- 表中字段 --><resultMap id="BaseResultMap" type="com.dayhr.web.module.hr.td.elearn.model.Trainer" ><id column="id" property="id" jdbcType="CHAR" /><result column="name" property="name" jdbcType="VARCHAR" /><result column="title" property="title" jdbcType="VARCHAR" /><result column="recommend" property="recommend" jdbcType="INTEGER" /><result column="trainer_type_id" property="trainerTypeId" jdbcType="CHAR" /><result column="phone" property="phone" jdbcType="VARCHAR" /><result column="email" property="email" jdbcType="VARCHAR" /><result column="address" property="address" jdbcType="VARCHAR" /><result column="pro_field" property="proField" jdbcType="VARCHAR" /><result column="intro" property="intro" jdbcType="VARCHAR" /><result column="head_img" property="headImg" jdbcType="VARCHAR" /><result column="labels" property="labels" jdbcType="VARCHAR" /><result column="corp_id" property="corpId" jdbcType="INTEGER" /><result column="creater_id" property="createrId" jdbcType="INTEGER" /><result column="create_time" property="createTime" jdbcType="TIMESTAMP" /><result column="modifier_id" property="modifierId" jdbcType="INTEGER" /><result column="modify_time" property="modifyTime" jdbcType="TIMESTAMP" /></resultMap><!-- 返回頁面Bean --><resultMap id="BaseResultRespMap" type="com.dayhr.web.module.hr.td.elearn.response.TrainerResp" ><id column="id" property="id" jdbcType="CHAR" /><result column="name" property="name" jdbcType="VARCHAR" /><result column="title" property="title" jdbcType="VARCHAR" /><result column="recommend" property="recommend" jdbcType="INTEGER" /><result column="trainer_type_id" property="trainerTypeId" jdbcType="CHAR" /><result column="phone" property="phone" jdbcType="VARCHAR" /><result column="email" property="email" jdbcType="VARCHAR" /><result column="address" property="address" jdbcType="VARCHAR" /><result column="pro_field" property="proField" jdbcType="VARCHAR" /><result column="intro" property="intro" jdbcType="VARCHAR" /><result column="head_img" property="headImg" jdbcType="VARCHAR" /><result column="labels" property="labels" jdbcType="VARCHAR" /><result column="corp_id" property="corpId" jdbcType="INTEGER" /><result column="creater_id" property="createrId" jdbcType="INTEGER" /><result column="create_time" property="createTime" jdbcType="TIMESTAMP" /><result column="modifier_id" property="modifierId" jdbcType="INTEGER" /><result column="modify_time" property="modifyTime" jdbcType="TIMESTAMP" /><result column="trainerTypeName" property="trainerTypeName" /><result column="trainerLabels" property="trainerLabels" /></resultMap><!-- 子查詢 --><resultMap id="BaseChildResultMap" type="com.dayhr.web.module.hr.td.elearn.response.TrainerResp" extends="BaseResultRespMap"><collection property="trainerLabels" ofType="com.dayhr.web.module.hr.td.elearn.response.TrainerLabelResp" select="com.dayhr.web.module.hr.td.elearn.mapper.TrainerLabelMapper.selecLabels" column="labels"></collection></resultMap><!-- 表中基礎字段 --><sql id="Base_Column_List">t.id, t.name, t.title, t.recommend, t.trainer_type_id, t1.name AS trainerTypeName, t.phone, t.email, t.address, t.pro_field, t.intro, t.head_img, t.labels, t.corp_id,t.creater_id, t.create_time, t.modifier_id, t.modify_time</sql><!-- 查詢條件 --><sql id="select_Where_Clause"> <where> 1=1<if test="id != null and id != ''">AND t.id = #{id } </if><if test="name != null and name != ''">AND t.name like CONCAT('%',#{name },'%' ) </if><if test="corpId != null and corpId != ''">AND corp_id = #{corpId } </if><if test="trainerTypeId != null and trainerTypeId != ''">AND t.trainer_type_id = #{trainerTypeId } </if> <if test="orderBy != null and orderBy != ''">ORDER BY ${orderBy } ${sortType }</if> </where></sql><delete id="deleteByPrimaryKey" parameterType="java.lang.String" >delete from t_hr_td_trainerwhere id = #{id }</delete><insert id="insert" parameterType="com.dayhr.web.module.hr.td.elearn.model.Trainer" useGeneratedKeys="true" keyProperty="id">insert into t_hr_td_trainer (id, name, title, recommend, trainer_type_id, phone, email, address, pro_field, intro, head_img, labels, corp_id, creater_id, create_time, modifier_id, modify_time)values (#{id,jdbcType=CHAR}, #{name,jdbcType=VARCHAR}, #{title,jdbcType=VARCHAR}, #{recommend,jdbcType=INTEGER}, #{trainerTypeId,jdbcType=CHAR}, #{phone,jdbcType=VARCHAR}, #{email,jdbcType=VARCHAR}, #{address,jdbcType=VARCHAR}, #{proField,jdbcType=VARCHAR}, #{intro,jdbcType=VARCHAR}, #{headImg,jdbcType=VARCHAR}, #{labels,jdbcType=VARCHAR}, #{corpId,jdbcType=INTEGER}, #{createrId,jdbcType=INTEGER}, #{createTime,jdbcType=TIMESTAMP}, #{modifierId,jdbcType=INTEGER}, #{modifyTime,jdbcType=TIMESTAMP})</insert><update id="updateByPrimaryKey" parameterType="com.dayhr.web.module.hr.td.elearn.model.Trainer" >UPDATE t_hr_td_trainer<set><if test="name != null and name != ''">name = #{name }, </if><if test="title != null and title != ''">title = #{title },</if> <if test="recommend != null and recommend != ''">recommend = #{recommend },</if><if test="trainerTypeId != null and trainerTypeId != ''">trainer_type_id = #{trainerTypeId },</if><if test="phone != null and phone != ''">phone = #{phone },</if><if test="email != null and email != ''">email = #{email },</if><if test="address != null and address != ''">address = #{address },</if><if test="proField != null and proField != ''">pro_field = #{proField },</if><if test="intro != null and intro != ''">intro = #{intro },</if><if test="headImg != null and headImg != ''">head_img = #{headImg },</if><if test="labels != null and labels != ''">labels = #{labels },</if><if test="corpId != null and corpId != ''">corp_id = #{corpId },</if><if test="createrId != null and createrId != ''">creater_id = #{createrId },</if> <if test="createTime != null and createTime != ''">create_time = #{createTime },</if> <if test="modifierId != null and modifierId != ''">modifier_id = #{modifierId },</if><if test="modifyTime != null and modifyTime != ''">modify_time = #{modifyTime }</if></set>WHERE id = #{id }</update><select id="selectByPrimaryKey" resultMap="BaseChildResultMap" parameterType="java.lang.String" >SELECT<include refid="Base_Column_List" />FROM t_hr_td_trainer tLEFT JOIN t_hr_td_trainertype t1 ON t.trainer_type_id = t1.idWHERE t.id = #{id }</select><select id="selectAll" resultMap="BaseResultMap" >select id, name, title, recommend, trainer_type_id, phone, email, address, pro_field, intro, head_img, labels, corp_id, creater_id, create_time, modifier_id, modify_timefrom t_hr_td_trainer</select><select id="selectListByCondition" parameterType="com.dayhr.web.module.hr.td.elearn.param.TrainerQueryParam" resultMap="BaseChildResultMap">SELECT<include refid="Base_Column_List" />FROM t_hr_td_trainer tLEFT JOIN t_hr_td_trainertype t1 ON t.trainer_type_id = t1.id <include refid="select_Where_Clause" /></select></mapper>

二：子查詢id="selecLabels"：注意此處value對應父查詢結果中labels：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.dayhr.web.module.hr.td.elearn.mapper.TrainerLabelMapper" ><!-- 對應表中字段 --><resultMap id="BaseResultMap" type="com.dayhr.web.module.hr.td.elearn.model.TrainerLabel" ><id column="id" property="id" /><result column="trainer_label" property="trainerLabel" jdbcType="VARCHAR" /><result column="built_in" property="builtIn" jdbcType="INTEGER" /><result column="corp_id" property="corpId" jdbcType="INTEGER" /><result column="creater_id" property="createrId" jdbcType="INTEGER" /><result column="creater_time" property="createrTime" jdbcType="TIMESTAMP" /><result column="modifier_id" property="modifierId" jdbcType="INTEGER" /><result column="modify_time" property="modifyTime" jdbcType="TIMESTAMP" /></resultMap><!-- 返回字段 --><resultMap id="BaseResultRespMap" type="com.dayhr.web.module.hr.td.elearn.response.TrainerLabelResp" ><id column="id" property="id" /><result column="trainer_label" property="trainerLabel" jdbcType="VARCHAR" /><result column="built_in" property="builtIn" jdbcType="INTEGER" /><result column="corp_id" property="corpId" jdbcType="INTEGER" /><result column="creater_id" property="createrId" jdbcType="INTEGER" /><result column="creater_time" property="createrTime" jdbcType="TIMESTAMP" /><result column="modifier_id" property="modifierId" jdbcType="INTEGER" /><result column="modify_time" property="modifyTime" jdbcType="TIMESTAMP" /><result column="labels" property="labels" /></resultMap><!-- 表中基礎字段 --><sql id="Base_Column_List">id, trainer_label, built_in, corp_id, creater_id, creater_time, modifier_id, modify_time</sql><!-- 查詢條件 --><sql id="select_Where_Clause"> <where> 1=1<if test="id != null and id != ''">AND id = #{id } </if><if test="corpId != null and corpId != ''">AND corp_id = #{corpId } </if><if test="trainerLabel != null and trainerLabel != ''">AND trainer_label like CONCAT('%',#{trainerLabel },'%' ) </if> <if test="orderBy != null and orderBy != ''">ORDER BY ${orderBy } ${sortType }</if> </where></sql><delete id="deleteByPrimaryKey" parameterType="java.lang.String" >delete from t_hr_td_trainerlabelwhere id = #{id,jdbcType=CHAR}</delete><insert id="insert" parameterType="com.dayhr.web.module.hr.td.elearn.model.TrainerLabel" useGeneratedKeys="true" keyProperty="id">insert into t_hr_td_trainerlabel (id, trainer_label, built_in, corp_id, creater_id, creater_time, modifier_id, modify_time)values (#{id },#{trainerLabel,jdbcType=VARCHAR}, #{builtIn,jdbcType=INTEGER}, #{corpId,jdbcType=INTEGER}, #{createrId,jdbcType=INTEGER}, #{createrTime,jdbcType=TIMESTAMP}, #{modifierId,jdbcType=INTEGER}, #{modifyTime,jdbcType=TIMESTAMP})</insert><update id="updateByPrimaryKey" parameterType="com.dayhr.web.module.hr.td.elearn.model.TrainerLabel" >UPDATE t_hr_td_trainerlabel<set><if test="trainerLabel != null and trainerLabel != ''">trainer_label = #{trainerLabel }, </if><if test="builtIn != null and builtIn != ''">built_in = #{builtIn },</if><if test="corpId != null and corpId != ''">corp_id = #{corpId },</if><if test="createrId != null and createrId != ''">creater_id = #{createrId },</if> <if test="createTime != null and createTime != ''">create_time = #{createTime },</if> <if test="modifierId != null and modifierId != ''">modifier_id = #{modifierId },</if><if test="modifyTime != null and modifyTime != ''">modify_time = #{modifyTime }</if></set>WHERE id = #{id }</update><select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" >select id, trainer_label, built_in, corp_id, creater_id, creater_time, modifier_id, modify_timefrom t_hr_td_trainerlabelwhere id = #{id }</select><select id="selectAll" resultMap="BaseResultMap" >select id, trainer_label, built_in, corp_id, creater_id, creater_time, modifier_id, modify_timefrom t_hr_td_trainerlabel</select><!-- 驗證標簽是否存在 --><select id="checkLabel" parameterType="com.dayhr.web.module.hr.td.elearn.param.TrainerLabelQueryParam" resultType="Integer">SELECT COUNT(*)FROM t_hr_td_trainerlabel <include refid="select_Where_Clause" /></select><!-- 按條件查詢標簽 --><select id="selectLabelList" resultMap="BaseResultRespMap" parameterType="com.dayhr.web.module.hr.td.elearn.param.TrainerLabelQueryParam" >SELECT <include refid="Base_Column_List" />FROM t_hr_td_trainerlabel <include refid="select_Where_Clause" /></select><!-- 子查詢 in()會報錯，加'0'處理 --><select id="selecLabels" resultMap="BaseResultRespMap" >select id, trainer_label, built_in, corp_id, creater_id, creater_time, modifier_id, modify_timefrom t_hr_td_trainerlabelwhere id in ('0'
??　　　 <if test="value != null and value.length !=0">
?? ,${value }
?? </if>
?? )</select></mapper>

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