dealer_back/pine-admin/target/classes/mapper/base/CitiesDao.xml

<?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.pine.admin.modules.base.dao.CitiesDao">

    <!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="com.pine.admin.modules.base.entity.Cities" id="citiesMap">
        <result property="id" column="id"/>
        <result property="cityid" column="cityid"/>
        <result property="city" column="city"/>
        <result property="provinceid" column="provinceid"/>
    </resultMap>

    <resultMap id="areas" type="com.pine.admin.modules.base.entity.Cities" extends="citiesMap">

        <collection property="areas"
                    ofType="com.pine.admin.modules.base.entity.Areas"
                    select="com.pine.admin.modules.base.dao.AreasDao.queryAllAreas"
                    column="{ cityid = cityid }"/>
    </resultMap>
    <sql id="Base_Column_List">
                 id,
                     cityid,
                     city,
                    provinceid         </sql>
    <!-- 根据Id查询-->
    <select id="selectByPrimaryKey" resultMap="citiesMap" parameterType="java.lang.Integer">
        select
        <include refid="Base_Column_List"/>
        from cities
        where id = #{id,jdbcType=INTEGER}
    </select>

    <!-- 根据Id删除-->
    <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
		delete from cities
		where id = #{id,jdbcType=INTEGER}
	</delete>

    <!-- 插入数据-->
    <insert id="insertSelective" parameterType="com.pine.admin.modules.base.entity.Cities" useGeneratedKeys="true"
            keyProperty="id">
        insert into cities
        <trim prefix="(" suffix=")" suffixOverrides=",">
            <if test="id != null">id,</if>
            <if test="cityid != null">cityid,</if>
            <if test="city != null">city,</if>
            <if test="provinceid != null">provinceid,</if>
        </trim>
        <trim prefix="values (" suffix=")" suffixOverrides=",">
            <if test="id != null">#{id},</if>
            <if test="cityid != null">#{cityid},</if>
            <if test="city != null">#{city},</if>
            <if test="provinceid != null">#{provinceid},</if>
        </trim>
    </insert>

    <!-- 更新数据-->
    <update id="updateByPrimaryKeySelective" parameterType="com.pine.admin.modules.base.entity.Cities">
        update cities
        <set>
            <if test="id != null">id = #{id},</if>
            <if test="cityid != null">cityid = #{cityid},</if>
            <if test="city != null">city = #{city},</if>
            <if test="provinceid != null">provinceid = #{provinceid},</if>
        </set>
        where id = #{id,jdbcType=INTEGER}
    </update>

    <!-- 分页查询-->
    <select id="queryCitiessByPage" parameterType="java.util.Map"
            resultType="com.pine.admin.modules.base.entity.Cities">
        select
        <include refid="Base_Column_List"/>
        from cities
        <where>
            <if test="record.id != null and !&quot;&quot;.equals(record.id)">and id = #{record.id}</if>
            <if test="record.cityid != null and !&quot;&quot;.equals(record.cityid)">and cityid = #{record.cityid}</if>
            <if test="record.city != null and !&quot;&quot;.equals(record.city)">and city = #{record.city}</if>
            <if test="record.provinceid != null and !&quot;&quot;.equals(record.provinceid)">and provinceid =
                #{record.provinceid}
            </if>
        </where>
        order by id desc
    </select>

    <!-- 全部查询 -->
    <select id="queryAllCities" parameterType="java.util.Map" resultMap="areas">
        select
        <include refid="Base_Column_List"/>
        from cities
        <where>
            <if test="id != null and !&quot;&quot;.equals(id)">and id = #{id}</if>
            <if test="cityid != null and !&quot;&quot;.equals(cityid)">and cityid = #{cityid}</if>
            <if test="city != null and !&quot;&quot;.equals(city)">and city = #{city}</if>
            <if test="provinceid != null and !&quot;&quot;.equals(provinceid)">and provinceid = #{provinceid}</if>
        </where>
        order by id asc
    </select>

    <!-- 根据条件查询一个 -->
    <select id="queryCities" parameterType="java.util.Map" resultType="com.pine.admin.modules.base.entity.Cities">
        select
        <include refid="Base_Column_List"/>
        from cities
        <where>
            <if test="id != null and !&quot;&quot;.equals(id)">and id = #{id}</if>
            <if test="cityid != null and !&quot;&quot;.equals(cityid)">and cityid = #{cityid}</if>
            <if test="city != null and !&quot;&quot;.equals(city)">and city = #{city}</if>
            <if test="provinceid != null and !&quot;&quot;.equals(provinceid)">and provinceid = #{provinceid}</if>
        </where>
        LIMIT 1
    </select>


    <select id="queryCitiesName" parameterType="java.lang.Integer" resultType="java.lang.String">
        select city from cities
        <where>
            <if test="cityid != null and !&quot;&quot;.equals(cityid)">and cityid = #{cityid}</if>
        </where>
        LIMIT 1
    </select>

    <delete id="delete">
        DELETE from cities
        <where>
            AND id = #{id}
        </where>
    </delete>

    <update id="deleteIds" parameterType="java.util.ArrayList">
        UPDATE cities SET del_flag = 'Y'
        WHERE id IN
        <foreach item='ids' collection="array" index="index" open="(" separator="," close=")">
            #{ids}
        </foreach>
    </update>

</mapper>