初始化v1

target/classes/application-dev.yml

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+spring:
+  datasource:
+    url: jdbc:mysql://localhost:3306/nl_shop?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
+    username: root
+    password: root

target/classes/application.yml

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+server:
+  port: 14001
+
+spring:
+  application:
+    name: nl-shop
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://127.0.0.1:3306/z_wb_nc_shop?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true
+    username: root
+    password: root
+  redis:
+    host: 127.0.0.1
+    port: 6379
+    password: redis_pBjaRs
+    timeout: 3000ms
+    lettuce:
+      pool:
+        max-active: 8
+        max-idle: 8
+        min-idle: 0
+  servlet:
+    multipart:
+      enabled: true
+      max-file-size: 10MB
+      max-request-size: 10MB
+  thymeleaf:
+    prefix: classpath:/templates/
+    suffix: .html
+    mode: HTML
+    encoding: UTF-8
+    cache: false
+
+mybatis:
+  mapper-locations: classpath:mapper/*.xml
+  type-aliases-package: com.nlshop.entity
+  configuration:
+    map-underscore-to-camel-case: true
+    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+
+pagehelper:
+  helper-dialect: mysql
+  reasonable: true
+  support-methods-arguments: true
+
+file:
+  upload-path: ${user.dir}/src/main/resources/static/upload

target/classes/db/schema.sql

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+-- 奶茶店管理系统数据库表结构
+
+-- 用户表
+CREATE TABLE IF NOT EXISTS `user` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `username` VARCHAR(50) UNIQUE NOT NULL COMMENT '用户名',
+    `password` VARCHAR(255) NOT NULL COMMENT '密码（加密）',
+    `name` VARCHAR(50) COMMENT '姓名',
+    `gender` TINYINT COMMENT '性别：0-女，1-男',
+    `phone` VARCHAR(20) COMMENT '手机号',
+    `email` VARCHAR(100) COMMENT '邮箱',
+    `avatar` VARCHAR(255) COMMENT '头像路径',
+    `address` VARCHAR(255) COMMENT '默认地址',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户表';
+
+-- 用户地址表
+CREATE TABLE IF NOT EXISTS `user_address` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `address` VARCHAR(255) NOT NULL COMMENT '详细地址',
+    `contact_name` VARCHAR(50) COMMENT '联系人姓名',
+    `contact_phone` VARCHAR(20) COMMENT '联系人电话',
+    `is_default` TINYINT DEFAULT 0 COMMENT '是否默认：0-否，1-是',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户地址表';
+
+-- 商家表
+CREATE TABLE IF NOT EXISTS `merchant` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `username` VARCHAR(50) UNIQUE NOT NULL COMMENT '用户名',
+    `password` VARCHAR(255) NOT NULL COMMENT '密码（加密）',
+    `store_name` VARCHAR(100) NOT NULL COMMENT '门店名称',
+    `address` VARCHAR(255) COMMENT '门店地址',
+    `phone` VARCHAR(20) COMMENT '联系电话',
+    `email` VARCHAR(100) COMMENT '邮箱',
+    `manager_name` VARCHAR(50) COMMENT '负责人姓名',
+    `avatar` VARCHAR(255) COMMENT '头像路径',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商家表';
+
+-- 商品表
+CREATE TABLE IF NOT EXISTS `product` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `merchant_id` BIGINT NOT NULL COMMENT '商家ID',
+    `name` VARCHAR(100) NOT NULL COMMENT '商品名称',
+    `category` VARCHAR(50) COMMENT '分类',
+    `description` TEXT COMMENT '商品描述',
+    `base_price` DECIMAL(10,2) NOT NULL COMMENT '基础价格',
+    `image` VARCHAR(255) COMMENT '商品图片',
+    `status` TINYINT DEFAULT 1 COMMENT '状态：0-下架，1-上架',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`merchant_id`) REFERENCES `merchant`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商品表';
+
+-- 商品规格表
+CREATE TABLE IF NOT EXISTS `product_spec` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `spec_name` VARCHAR(50) NOT NULL COMMENT '规格名称（大杯/中杯/小杯）',
+    `price_adjust` DECIMAL(10,2) DEFAULT 0 COMMENT '价格调整（相对于基础价格）',
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商品规格表';
+
+-- 配料表
+CREATE TABLE IF NOT EXISTS `product_topping` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `topping_name` VARCHAR(50) NOT NULL COMMENT '配料名称',
+    `price` DECIMAL(10,2) DEFAULT 0 COMMENT '配料价格',
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='配料表';
+
+-- 商品定制选项表
+CREATE TABLE IF NOT EXISTS `product_custom` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `option_type` VARCHAR(20) NOT NULL COMMENT '选项类型：sweetness-甜度，ice-冰度',
+    `option_value` VARCHAR(50) NOT NULL COMMENT '选项值',
+    `price_adjust` DECIMAL(10,2) DEFAULT 0 COMMENT '价格调整',
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商品定制选项表';
+
+-- 购物车表
+CREATE TABLE IF NOT EXISTS `cart` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `spec_id` BIGINT COMMENT '规格ID',
+    `quantity` INT DEFAULT 1 COMMENT '数量',
+    `custom_sweetness` VARCHAR(20) COMMENT '甜度定制',
+    `custom_ice` VARCHAR(20) COMMENT '冰度定制',
+    `toppings` TEXT COMMENT '配料JSON',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='购物车表';
+
+-- 订单表
+CREATE TABLE IF NOT EXISTS `order` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `order_no` VARCHAR(50) UNIQUE NOT NULL COMMENT '订单号',
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `merchant_id` BIGINT NOT NULL COMMENT '商家ID',
+    `total_amount` DECIMAL(10,2) NOT NULL COMMENT '订单总金额',
+    `payment_method` VARCHAR(20) COMMENT '支付方式：wechat/alipay',
+    `payment_status` TINYINT DEFAULT 0 COMMENT '支付状态：0-未支付，1-已支付',
+    `order_status` VARCHAR(20) DEFAULT 'PENDING_PAY' COMMENT '订单状态：PENDING_PAY-待支付，MAKING-制作中，READY-待取餐，COMPLETED-已完成，CANCELLED-已取消',
+    `address` VARCHAR(255) NOT NULL COMMENT '收货地址',
+    `contact_phone` VARCHAR(20) NOT NULL COMMENT '联系电话',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    `pay_time` DATETIME COMMENT '支付时间',
+    `complete_time` DATETIME COMMENT '完成时间',
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`),
+    FOREIGN KEY (`merchant_id`) REFERENCES `merchant`(`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订单表';
+
+-- 订单明细表
+CREATE TABLE IF NOT EXISTS `order_item` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `order_id` BIGINT NOT NULL COMMENT '订单ID',
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `product_name` VARCHAR(100) NOT NULL COMMENT '商品名称',
+    `spec_name` VARCHAR(50) COMMENT '规格名称',
+    `quantity` INT NOT NULL COMMENT '数量',
+    `price` DECIMAL(10,2) NOT NULL COMMENT '单价',
+    `custom_sweetness` VARCHAR(20) COMMENT '甜度',
+    `custom_ice` VARCHAR(20) COMMENT '冰度',
+    `toppings` TEXT COMMENT '配料JSON',
+    `subtotal` DECIMAL(10,2) NOT NULL COMMENT '小计',
+    FOREIGN KEY (`order_id`) REFERENCES `order`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订单明细表';
+
+-- 订单跟踪表
+CREATE TABLE IF NOT EXISTS `order_track` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `order_id` BIGINT NOT NULL COMMENT '订单ID',
+    `status` VARCHAR(20) NOT NULL COMMENT '状态',
+    `description` VARCHAR(255) COMMENT '描述',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`order_id`) REFERENCES `order`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订单跟踪表';
+
+-- 公告表
+CREATE TABLE IF NOT EXISTS `announcement` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `merchant_id` BIGINT NOT NULL COMMENT '商家ID',
+    `title` VARCHAR(200) NOT NULL COMMENT '标题',
+    `content` TEXT COMMENT '内容',
+    `type` VARCHAR(20) DEFAULT 'NOTICE' COMMENT '类型：ACTIVITY-活动，NOTICE-通知',
+    `status` TINYINT DEFAULT 1 COMMENT '状态：0-下架，1-发布',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`merchant_id`) REFERENCES `merchant`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='公告表';
+
+-- 留言反馈表
+CREATE TABLE IF NOT EXISTS `message` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `merchant_id` BIGINT NOT NULL COMMENT '商家ID',
+    `order_id` BIGINT COMMENT '订单ID',
+    `content` TEXT NOT NULL COMMENT '留言内容',
+    `reply` TEXT COMMENT '回复内容',
+    `status` TINYINT DEFAULT 0 COMMENT '状态：0-未回复，1-已回复',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    `reply_time` DATETIME COMMENT '回复时间',
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`),
+    FOREIGN KEY (`merchant_id`) REFERENCES `merchant`(`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='留言反馈表';
+
+-- 评价表
+CREATE TABLE IF NOT EXISTS `review` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `order_id` BIGINT NOT NULL COMMENT '订单ID',
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `rating` TINYINT NOT NULL COMMENT '评分：1-5',
+    `content` TEXT COMMENT '评价内容',
+    `reply` TEXT COMMENT '商家回复',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`),
+    FOREIGN KEY (`order_id`) REFERENCES `order`(`id`),
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='评价表';
+
+-- 库存表
+CREATE TABLE IF NOT EXISTS `inventory` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `merchant_id` BIGINT NOT NULL COMMENT '商家ID',
+    `material_name` VARCHAR(100) NOT NULL COMMENT '原料名称',
+    `quantity` DECIMAL(10,2) NOT NULL COMMENT '数量',
+    `unit` VARCHAR(20) COMMENT '单位',
+    `min_threshold` DECIMAL(10,2) DEFAULT 0 COMMENT '最低库存阈值',
+    `last_in_time` DATETIME COMMENT '最后入库时间',
+    `last_out_time` DATETIME COMMENT '最后出库时间',
+    FOREIGN KEY (`merchant_id`) REFERENCES `merchant`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存表';
+
+-- 库存操作日志表
+CREATE TABLE IF NOT EXISTS `inventory_log` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `inventory_id` BIGINT NOT NULL COMMENT '库存ID',
+    `operation_type` VARCHAR(20) NOT NULL COMMENT '操作类型：IN-入库，OUT-出库',
+    `quantity` DECIMAL(10,2) NOT NULL COMMENT '操作数量',
+    `operator` VARCHAR(50) COMMENT '操作人',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`inventory_id`) REFERENCES `inventory`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存操作日志表';
+
+-- 用户行为表（用于协同过滤）
+CREATE TABLE IF NOT EXISTS `user_behavior` (
+    `id` BIGINT PRIMARY KEY AUTO_INCREMENT,
+    `user_id` BIGINT NOT NULL COMMENT '用户ID',
+    `product_id` BIGINT NOT NULL COMMENT '商品ID',
+    `behavior_type` VARCHAR(20) NOT NULL COMMENT '行为类型：VIEW-浏览，PURCHASE-购买，RATING-评分',
+    `score` DECIMAL(5,2) DEFAULT 0 COMMENT '评分（0-5）',
+    `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`product_id`) REFERENCES `product`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户行为表';
+
+-- 用户相似度缓存表（可选）
+CREATE TABLE IF NOT EXISTS `user_similarity` (
+    `user1_id` BIGINT NOT NULL COMMENT '用户1ID',
+    `user2_id` BIGINT NOT NULL COMMENT '用户2ID',
+    `similarity_score` DECIMAL(10,6) NOT NULL COMMENT '相似度分数',
+    `update_time` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`user1_id`, `user2_id`),
+    FOREIGN KEY (`user1_id`) REFERENCES `user`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`user2_id`) REFERENCES `user`(`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户相似度缓存表';
+
+-- 创建索引
+CREATE INDEX idx_user_username ON `user`(`username`);
+CREATE INDEX idx_merchant_username ON `merchant`(`username`);
+CREATE INDEX idx_product_merchant ON `product`(`merchant_id`);
+CREATE INDEX idx_product_status ON `product`(`status`);
+CREATE INDEX idx_cart_user ON `cart`(`user_id`);
+CREATE INDEX idx_order_user ON `order`(`user_id`);
+CREATE INDEX idx_order_merchant ON `order`(`merchant_id`);
+CREATE INDEX idx_order_status ON `order`(`order_status`);
+CREATE INDEX idx_order_no ON `order`(`order_no`);
+CREATE INDEX idx_user_behavior_user ON `user_behavior`(`user_id`);
+CREATE INDEX idx_user_behavior_product ON `user_behavior`(`product_id`);

target/classes/mapper/AnnouncementMapper.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.nlshop.mapper.AnnouncementMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.Announcement">
+        <id column="id" property="id"/>
+        <result column="merchant_id" property="merchantId"/>
+        <result column="title" property="title"/>
+        <result column="content" property="content"/>
+        <result column="type" property="type"/>
+        <result column="status" property="status"/>
+        <result column="create_time" property="createTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.Announcement" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO announcement (merchant_id, title, content, type, status)
+        VALUES (#{merchantId}, #{title}, #{content}, #{type}, #{status})
+    </insert>
+
+    <select id="selectByMerchantId" resultMap="BaseResultMap">
+        SELECT * FROM announcement WHERE merchant_id = #{merchantId} ORDER BY create_time DESC
+    </select>
+
+    <select id="selectPublished" resultMap="BaseResultMap">
+        SELECT * FROM announcement WHERE status = 1 ORDER BY create_time DESC
+    </select>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM announcement WHERE id = #{id}
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.Announcement">
+        UPDATE announcement
+        <set>
+            <if test="title != null">title = #{title},</if>
+            <if test="content != null">content = #{content},</if>
+            <if test="type != null">type = #{type},</if>
+            <if test="status != null">status = #{status},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <delete id="delete">
+        DELETE FROM announcement WHERE id = #{id}
+    </delete>
+</mapper>

target/classes/mapper/CartMapper.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.nlshop.mapper.CartMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.CartItem">
+        <id column="id" property="id"/>
+        <result column="user_id" property="userId"/>
+        <result column="product_id" property="productId"/>
+        <result column="spec_id" property="specId"/>
+        <result column="quantity" property="quantity"/>
+        <result column="custom_sweetness" property="customSweetness"/>
+        <result column="custom_ice" property="customIce"/>
+        <result column="toppings" property="toppings"/>
+        <result column="create_time" property="createTime"/>
+        <association property="product" javaType="com.nlshop.entity.Product">
+            <id column="p_id" property="id"/>
+            <result column="p_name" property="name"/>
+            <result column="p_image" property="image"/>
+            <result column="p_base_price" property="basePrice"/>
+            <result column="p_merchant_id" property="merchantId"/>
+        </association>
+        <association property="spec" javaType="com.nlshop.entity.ProductSpec">
+            <id column="s_id" property="id"/>
+            <result column="s_spec_name" property="specName"/>
+            <result column="s_price_adjust" property="priceAdjust"/>
+        </association>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.CartItem" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO cart (user_id, product_id, spec_id, quantity, custom_sweetness, custom_ice, toppings)
+        VALUES (#{userId}, #{productId}, #{specId}, #{quantity}, #{customSweetness}, #{customIce}, #{toppings})
+    </insert>
+
+    <select id="selectByUserId" resultMap="BaseResultMap">
+        SELECT c.*, 
+               p.id as p_id, p.name as p_name, p.image as p_image, p.base_price as p_base_price, p.merchant_id as p_merchant_id,
+               s.id as s_id, s.spec_name as s_spec_name, s.price_adjust as s_price_adjust
+        FROM cart c
+        LEFT JOIN product p ON c.product_id = p.id
+        LEFT JOIN product_spec s ON c.spec_id = s.id
+        WHERE c.user_id = #{userId}
+        ORDER BY c.create_time DESC
+    </select>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT c.*, 
+               p.id as p_id, p.name as p_name, p.image as p_image, p.base_price as p_base_price, p.merchant_id as p_merchant_id,
+               s.id as s_id, s.spec_name as s_spec_name, s.price_adjust as s_price_adjust
+        FROM cart c
+        LEFT JOIN product p ON c.product_id = p.id
+        LEFT JOIN product_spec s ON c.spec_id = s.id
+        WHERE c.id = #{id}
+    </select>
+
+    <select id="selectByUserAndProduct" resultMap="BaseResultMap">
+        SELECT * FROM cart
+        WHERE user_id = #{userId} AND product_id = #{productId}
+        AND (spec_id = #{specId} OR (#{specId} IS NULL AND spec_id IS NULL))
+        AND (custom_sweetness = #{customSweetness} OR (#{customSweetness} IS NULL AND custom_sweetness IS NULL))
+        AND (custom_ice = #{customIce} OR (#{customIce} IS NULL AND custom_ice IS NULL))
+        AND (toppings = #{toppings} OR (#{toppings} IS NULL AND toppings IS NULL))
+        LIMIT 1
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.CartItem">
+        UPDATE cart
+        <set>
+            <if test="quantity != null">quantity = #{quantity},</if>
+            <if test="customSweetness != null">custom_sweetness = #{customSweetness},</if>
+            <if test="customIce != null">custom_ice = #{customIce},</if>
+            <if test="toppings != null">toppings = #{toppings},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <update id="updateQuantity">
+        UPDATE cart SET quantity = #{quantity} WHERE id = #{id}
+    </update>
+
+    <delete id="delete">
+        DELETE FROM cart WHERE id = #{id}
+    </delete>
+
+    <delete id="deleteByUserId">
+        DELETE FROM cart WHERE user_id = #{userId}
+    </delete>
+
+    <delete id="deleteBatch">
+        DELETE FROM cart 
+        WHERE id IN
+        <foreach collection="ids" item="id" open="(" separator="," close=")">
+            #{id}
+        </foreach>
+        AND user_id = #{userId}
+    </delete>
+</mapper>

target/classes/mapper/InventoryLogMapper.xml

@@ -0,0 +1,21 @@
+<?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.nlshop.mapper.InventoryLogMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.InventoryLog">
+        <id column="id" property="id"/>
+        <result column="inventory_id" property="inventoryId"/>
+        <result column="operation_type" property="operationType"/>
+        <result column="quantity" property="quantity"/>
+        <result column="operator" property="operator"/>
+        <result column="create_time" property="createTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.InventoryLog" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO inventory_log (inventory_id, operation_type, quantity, operator)
+        VALUES (#{inventoryId}, #{operationType}, #{quantity}, #{operator})
+    </insert>
+
+    <select id="selectByInventoryId" resultMap="BaseResultMap">
+        SELECT * FROM inventory_log WHERE inventory_id = #{inventoryId} ORDER BY create_time DESC
+    </select>
+</mapper>

target/classes/mapper/InventoryMapper.xml

@@ -0,0 +1,55 @@
+<?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.nlshop.mapper.InventoryMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.Inventory">
+        <id column="id" property="id"/>
+        <result column="merchant_id" property="merchantId"/>
+        <result column="material_name" property="materialName"/>
+        <result column="quantity" property="quantity"/>
+        <result column="unit" property="unit"/>
+        <result column="min_threshold" property="minThreshold"/>
+        <result column="last_in_time" property="lastInTime"/>
+        <result column="last_out_time" property="lastOutTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.Inventory" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO inventory (merchant_id, material_name, quantity, unit, min_threshold)
+        VALUES (#{merchantId}, #{materialName}, #{quantity}, #{unit}, #{minThreshold})
+    </insert>
+
+    <select id="selectByMerchantId" resultMap="BaseResultMap">
+        SELECT * FROM inventory WHERE merchant_id = #{merchantId} ORDER BY material_name
+    </select>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM inventory WHERE id = #{id}
+    </select>
+
+    <select id="selectByMerchantAndMaterial" resultMap="BaseResultMap">
+        SELECT * FROM inventory 
+        WHERE merchant_id = #{merchantId} AND material_name = #{materialName}
+        LIMIT 1
+    </select>
+
+    <select id="selectLowStock" resultMap="BaseResultMap">
+        SELECT * FROM inventory
+        WHERE merchant_id = #{merchantId} AND quantity &lt;= min_threshold
+        ORDER BY quantity ASC
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.Inventory">
+        UPDATE inventory
+        <set>
+            <if test="quantity != null">quantity = #{quantity},</if>
+            <if test="unit != null">unit = #{unit},</if>
+            <if test="minThreshold != null">min_threshold = #{minThreshold},</if>
+            <if test="lastInTime != null">last_in_time = #{lastInTime},</if>
+            <if test="lastOutTime != null">last_out_time = #{lastOutTime},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+
+    <delete id="delete">
+        DELETE FROM inventory WHERE id = #{id}
+    </delete>
+</mapper>

target/classes/mapper/MerchantMapper.xml

@@ -0,0 +1,43 @@
+<?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.nlshop.mapper.MerchantMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.Merchant">
+        <id column="id" property="id"/>
+        <result column="username" property="username"/>
+        <result column="password" property="password"/>
+        <result column="store_name" property="storeName"/>
+        <result column="address" property="address"/>
+        <result column="phone" property="phone"/>
+        <result column="email" property="email"/>
+        <result column="manager_name" property="managerName"/>
+        <result column="avatar" property="avatar"/>
+        <result column="create_time" property="createTime"/>
+        <result column="update_time" property="updateTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.Merchant" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO merchant (username, password, store_name, address, phone, email, manager_name, avatar)
+        VALUES (#{username}, #{password}, #{storeName}, #{address}, #{phone}, #{email}, #{managerName}, #{avatar})
+    </insert>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM merchant WHERE id = #{id}
+    </select>
+
+    <select id="selectByUsername" resultMap="BaseResultMap">
+        SELECT * FROM merchant WHERE username = #{username}
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.Merchant">
+        UPDATE merchant
+        <set>
+            <if test="storeName != null">store_name = #{storeName},</if>
+            <if test="address != null">address = #{address},</if>
+            <if test="phone != null">phone = #{phone},</if>
+            <if test="email != null">email = #{email},</if>
+            <if test="managerName != null">manager_name = #{managerName},</if>
+            <if test="avatar != null">avatar = #{avatar},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+</mapper>

target/classes/mapper/MessageMapper.xml

@@ -0,0 +1,42 @@
+<?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.nlshop.mapper.MessageMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.Message">
+        <id column="id" property="id"/>
+        <result column="user_id" property="userId"/>
+        <result column="merchant_id" property="merchantId"/>
+        <result column="order_id" property="orderId"/>
+        <result column="content" property="content"/>
+        <result column="reply" property="reply"/>
+        <result column="status" property="status"/>
+        <result column="create_time" property="createTime"/>
+        <result column="reply_time" property="replyTime"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.Message" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO message (user_id, merchant_id, order_id, content, status)
+        VALUES (#{userId}, #{merchantId}, #{orderId}, #{content}, #{status})
+    </insert>
+
+    <select id="selectByUserId" resultMap="BaseResultMap">
+        SELECT * FROM message WHERE user_id = #{userId} ORDER BY create_time DESC
+    </select>
+
+    <select id="selectByMerchantId" resultMap="BaseResultMap">
+        SELECT * FROM message WHERE merchant_id = #{merchantId} ORDER BY create_time DESC
+    </select>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM message WHERE id = #{id}
+    </select>
+
+    <update id="update" parameterType="com.nlshop.entity.Message">
+        UPDATE message
+        <set>
+            <if test="reply != null">reply = #{reply},</if>
+            <if test="status != null">status = #{status},</if>
+            <if test="replyTime != null">reply_time = #{replyTime},</if>
+        </set>
+        WHERE id = #{id}
+    </update>
+</mapper>

target/classes/mapper/OrderItemMapper.xml

@@ -0,0 +1,32 @@
+<?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.nlshop.mapper.OrderItemMapper">
+    <resultMap id="BaseResultMap" type="com.nlshop.entity.OrderItem">
+        <id column="id" property="id"/>
+        <result column="order_id" property="orderId"/>
+        <result column="product_id" property="productId"/>
+        <result column="product_name" property="productName"/>
+        <result column="spec_name" property="specName"/>
+        <result column="quantity" property="quantity"/>
+        <result column="price" property="price"/>
+        <result column="custom_sweetness" property="customSweetness"/>
+        <result column="custom_ice" property="customIce"/>
+        <result column="toppings" property="toppings"/>
+        <result column="subtotal" property="subtotal"/>
+    </resultMap>
+
+    <insert id="insert" parameterType="com.nlshop.entity.OrderItem" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO order_item (order_id, product_id, product_name, spec_name, quantity, price,
+                               custom_sweetness, custom_ice, toppings, subtotal)
+        VALUES (#{orderId}, #{productId}, #{productName}, #{specName}, #{quantity}, #{price},
+                #{customSweetness}, #{customIce}, #{toppings}, #{subtotal})
+    </insert>
+
+    <select id="selectByOrderId" resultMap="BaseResultMap">
+        SELECT * FROM order_item WHERE order_id = #{orderId}
+    </select>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT * FROM order_item WHERE id = #{id}
+    </select>
+</mapper>