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yami-shop-service/src/main/resources/mapper/CategoryMapper.xml

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+<?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.yami.shop.dao.CategoryMapper">
+
+	<!-- resultMap定义了数据库表字段与Java对象属性之间的映射关系，用于分类及其产品信息 -->
+	<resultMap id="categoryProdMap" type="com.yami.shop.bean.model.Category">
+		<id column="category_id" jdbcType="BIGINT" property="categoryId" />
+		<result column="category_name" jdbcType="VARCHAR" property="categoryName" />
+		<!-- 集合属性，表示一个分类下有多個产品 -->
+		<collection property="products" column="prod_id" ofType="com.yami.shop.bean.model.Product">
+			<!-- 以下是产品的属性与数据库字段的映射 -->
+			<id property="prodId" column="prod_id"/>
+			<result property="prodName" column="prod_name"/>
+			<result property="shopId" column="shop_id"/>
+			<result property="oriPrice" column="ori_price"/>
+			<result property="price" column="price"/>
+			<result property="brief" column="brief"/>
+			<result property="content" column="content"/>
+			<result property="imgs" column="imgs"/>
+			<result property="status" column="status"/>
+			<result property="categoryId" column="category_id"/>
+			<result property="soldNum" column="sold_num"/>
+			<result property="totalStocks" column="total_stocks"/>
+			<result property="createTime" column="create_time"/>
+			<result property="updateTime" column="update_time"/>
+		</collection>
+	</resultMap>
+
+	<!-- 查询语句，根据父级ID查询分类列表 -->
+	<select id="listByParentId" resultType="com.yami.shop.bean.model.Category">
+		select category_id,category_name,`seq`,`status`,pic from tz_category where parent_id = #{parentId} and `status` = 1 order by seq
+	</select>
+
+	<!-- 查询语句，根据店铺ID查询分类列表 -->
+	<select id="tableCategory" resultType="com.yami.shop.bean.model.Category">
+		select category_id ,parent_id ,category_name,pic,seq,status from tz_category where shop_id = #{shopId} order by seq
+	</select>
+</mapper>