目录

1.用户需求

2.数据库设计

3.Java后台实现

• 3.1Mybatis对应的配置文件GoodsCollectDao.xml
• 3.2 GoodsCollectDao实现
• 3.3 Service接口及实现

4.微信小程序实现

• 4.1index.wxml
• 4.2 index.wxss

5.我的收藏效果

1.用户需求

我的收藏需求如下：

1).在小程序的底部菜单中，新增“我的收藏”，显示收藏商品列表。点收藏某个商品后，跳转到商品详情

2).商品详情页面，可以收藏和取消收藏。

3).商品下架后，自动删除用户收藏的商品。

收藏！“黄码”人员核酸检测和看病就医定点机构名单来了

来源：健康四川官微 近日，四川省卫生健康委下发《关于做好“黄码”人员核酸检测和医疗服务保障的通知》，要求各地按照“相对集中、减少交叉”的原则，确定专门医疗机构就近就便为“黄码”人员提供核酸检测和医疗救治服务，规范有序为群众提供日常诊疗服务，

2.数据库设计

数据库表结构，比较简单，把用户id和商品id保存即可，如下：

CREATE TABLE `goods_collect` (  `id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',  `gmt_create` datetime NOT NULL COMMENT '创建时间',  `goods_id` int(11) NOT NULL COMMENT '商品id',  `member_id` int(11) DEFAULT NULL COMMENT '用户id',  PRIMARY KEY (`id`)) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 comment="收藏商品";

3.Java后台实现

3.1Mybatis对应的配置文件GoodsCollectDao.xml内容如下：

<?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.ddc.dao.goods.GoodsCollectDao">    <resultMap id="BaseResultMap" type="com.ddc.model.goods.GoodsCollect">        <id column="id" jdbcType="INTEGER" property="id"/>        <result column="gmt_create" jdbcType="TIMESTAMP" property="gmtCreate"/>        <result column="goods_id" jdbcType="INTEGER" property="goodsId"/>        <result column="member_id" jdbcType="INTEGER" property="memberId"/>    </resultMap>     <sql id="Base_Column_List">        id, gmt_create, goods_id, member_id    </sql>      <select id="queryApilistPage" resultType="map" parameterType="object">        select  c.id AS catId,g.main_img as imgUrl, g.goods_name as goodsName, g.id as goodsId, g.goods_price as price,        wholesale_price as wholePrice,        DATE_FORMAT(g.gmt_create,'%Y-%m-%d') as createTime,g.goods_sales AS goodsSales,c.cat_name AS catName        ,g.goods_status AS goodStatus        FROM goods_info g        LEFT JOIN goods_cat c ON g.cat_id = c.id        LEFT JOIN goods_collect d ON d.goods_id=g.id        where d.member_id=${pd.memberId}        <if test="pd.goodsName != null and pd.goodsName != ''">            and g.goods_name like CONCAT('%',#{pd.goodsName},'%')        </if>        <if test="pd.orderBy != null and pd.orderBy != ''">            ${pd.orderBy}        </if>    </select>    <select id="queryByGoodIdAndMemberId"  resultMap="BaseResultMap"  parameterType="com.ddc.model.goods.GoodsCollect">        select id, gmt_create, goods_id, member_id from goods_collect        where goods_id = #{goodsId} and member_id=#{memberId}    </select>    <delete id="delete" parameterType="com.ddc.model.goods.GoodsCollect">        delete from goods_collect  where goods_id = #{goodsId} and member_id=#{memberId}    </delete>     <insert id="insert" keyColumn="id" keyProperty="id" parameterType="com.ddc.model.goods.GoodsCollect" useGeneratedKeys="true">        insert into goods_collect (gmt_create, goods_id, member_id)  values (now(), #{goodsId}, #{memberId})    </insert> </mapper>

3.2 GoodsCollectDao实现代码如下：

public interface GoodsCollectDao {    //我的收藏商品列表    List<Map<String, Object>> queryApilistPage(Page pages);    //收藏    int insert(GoodsCollect goodsCollect);    //取消收藏    int delete(GoodsCollect goodsCollect);    //查询商品是否被用户收藏    GoodsCollect queryByGoodIdAndMemberId(GoodsCollect goodsCollect);}

3.3 Service接口及实现接口代码如下：

 public interface GoodsCollectService {    //我的收藏商品列表    List<Map<String, Object>> queryApilistPage(Page pages);    //收藏    void insert(GoodsCollect goodsCollect);    //取消收藏    void delete(GoodsCollect goodsCollect);    //查询商品是否被用户收藏    GoodsCollect queryByGoodIdAndMemberId(GoodsCollect goodsCollect);}

实现代码如下：

@Servicepublic class GoodsCollectServiceImpl implements GoodsCollectService {     @Resource    private GoodsCollectDao goodsCollectDao;    //我的收藏商品列表    public List<Map<String, Object>> queryApilistPage(Page pages){        return goodsCollectDao.queryApilistPage(pages);    }    //收藏    public void insert(GoodsCollect goodsCollect){        goodsCollectDao.insert(goodsCollect);    }    //取消收藏    public void delete(GoodsCollect goodsCollect){        goodsCollectDao.delete(goodsCollect);    }    //查询商品是否被用户收藏    public GoodsCollect queryByGoodIdAndMemberId(GoodsCollect goodsCollect){       return goodsCollectDao.queryByGoodIdAndMemberId(goodsCollect);    }}

4.微信小程序实现

4.1index.wxml

<view class='ddc-search-box'> <view class='inp'>   <input value='{{searchKey}}' type='text' bindinput="searchInput" placeholder='搜索' /> </view><view class='search-btn' bindtap='searchBtn'>搜索</view></view><scroll-view scroll-y='true' style="height:{{scrollViewHeight}}px" bindscrolltolower='getGoodList'><view class='ddc-category-box'><block wx:if='{{goodsList.length!=0}}'>   <view class='active-wrap' wx:for='{{goodsList}}' wx:key='index'>     <view class='pic'>       <image src='{{item.imgUrl}}' data-src="{{item.imgUrl}}"  bindtap="enlarge" />     </view>     <view class='txt' data-goodsid='{{item.goodsId}}'  data-goodstatus='{{item.goodStatus}}' bindtap='viewDetail'>       <view class='title'>{{item.goodsName}}</view>       <view class='ddc-info'>         <view>￥{{item.price}}</view>         <view>已售{{item.goodsSales==null?'0':item.goodsSales}}</view>         <view>           <text>了解详情</text>         </view>       </view>     </view>   </view> </block> <view class='no-data' wx:if='{{goodsList.length==0}}'>暂无数据</view></view></scroll-view>

4.2 index.wxss

page{background: #fff;}.ddc-category-box{ margin-top: 10px}.active-wrap{margin: 5px 15px; background: #f5f5f5; padding: 8px 5px 5px 5px}.active-wrap.recom-area { margin-bottom: 30px;}.active-wrap{display: flex;border-radius: 5px;}.active-wrap .pic{flex:1;}.active-wrap .pic image{ width:100px;height: 60px}.active-wrap .txt{flex:4; padding-left: 10px}.active-wrap .txt .title{font-size: 14px}.active-wrap .ddc-info{display: flex; font-size: 14px; padding-top: 10px}.active-wrap .ddc-info view{ flex: 1}.active-wrap .ddc-info view:nth-of-type(1){ color: #fc6737}.active-wrap .ddc-info view:nth-of-type(3) text{ background: #07c160; font-size: 12px; color: #ffffff; border-radius: 5px; padding: 2px 0px}#tab-title .icon-sort image{ width: 8px; height: 6px; }.ddc-search-box{margin-top: 10px; display: flex; padding: 0px 20px}/* .ddc-search-box view{ flex: 1} */.ddc-search-box .inp{ width: 100%; height: 32px; border: 1px solid #e5e5e5; font-size: 14px; padding-left: 10px; border-radius: 5px;vertical-align:middle;}.search-btn{ width: 80px;font-size: 14px; background:#07c160;border-radius: 5px; color: #ffffff; text-align: center; line-height: 32px; margin-left: 10px}.no-data{ font-size: 14px; text-align: center;}.titlenotshow{display:none}.titleshow{display:block} .backHome{  height: 30px;background:#07c160; color: #ffffff;font-size: 14px;   display: flex;flex-direction:center;justify-content: center;align-items: center; }.backHome .backtext{width: 33%;}.backHome .gwtitle{text-align:center;font-size: 16px; }

5.我的收藏效果