【UniApp开发小程序】小程序首页(展示商品、商品搜索、商品分类搜索)【后端基于若依管理系统开发】

界面效果

【说明】

• 界面中商品的图片来源于闲鱼，若侵权请联系删除
• 关于商品分类页面的实现，请在我的Uniapp系列文章中寻找来查看
• 关于页面中悬浮按钮的实现，请在我的Uniapp系列文章中寻找来查看

界面实现

工具js

该工具类的作用是，给定一个图片的url地址，计算出图片的高宽比，计算高宽比的作用是让图片可以按照正常比例显示

/*** 获取uuid*/
export default {/*** 获取高宽比 乘以 100%*/getAspectRatio(url) {uni.getImageInfo({src: url,success: function(res) {let aspectRatio = res.height * 100.0 / res.width;// console.log("aspectRatio:" + aspectRatio);return aspectRatio + "%";}});},
}

页面

首页

<template><view class="content"><view style="display: flex;align-items: center;"><u-search placeholder="请输入商品名称" v-model="searchForm.keyword" @search="listProductVo" :showAction="false":clearabled="true"></u-search><text class="iconfont" style="font-size: 35px;" @click="selectCategory()">&#xe622;</text></view><u-row customStyle="margin-top: 10px" gutter="10" align="start" v-if="productList[0].length>0&&loadData==false"><u-col span="6" class="col" v-for="(data,index) in productList" :key="index"><view class="productVoItem" v-for="(productVo,index1) in data" :key="index1"@click="seeProductDetail(productVo)"><u--image v-if="productVo.picList!=null&&productVo.picList.length>0" :showLoading="true":src="productVo.picList[0]" width="100%" :height="getAspectRatio(productVo.picList[0])"radius="10" mode="widthFix"></u--image><!-- <u--image v-else :showLoading="true" :src="src" @click="click"></u--image> --><view class="productMes"><text class="productName">【{{productVo.name}}】</text><text>{{productVo.description==null?'':productVo.description}}</text></view><view style="display: flex;align-items: center;"><!-- 现价 --><view class="price">¥<text class="number">{{productVo.price}}</text>/{{productVo.unit}}</view><view style="width: 10px;"></view><!-- 原价 --><view class="originPrice">¥{{productVo.originalPrice}}/{{productVo.unit}}</view></view><view style="display: flex;align-items: center;"><u--image :src="productVo.avatar" width="20" height="20" shape="circle"></u--image><view style="width: 10px;"></view><view> {{productVo.nickname}}</view></view></view></u-col></u-row><u-empty v-if="productList[0].length==0&&loadData==false" mode="data" texColor="#ffffff" iconSize="180"iconColor="#D7DEEB" text="所选择的分类没有对应的商品,请重新选择" textColor="#D7DEEB" textSize="18" marginTop="30"></u-empty><view style="margin-top: 20px;" v-if="loadData==true"><u-skeleton :loading="true" :animate="true" rows="10"></u-skeleton></view><!-- 浮动按钮 --><FloatButton @click="cellMyProduct()"><u--image :src="floatButtonPic" shape="circle" width="60px" height="60px"></u--image></FloatButton></view>
</template><script>import FloatButton from "@/components/FloatButton/FloatButton.vue";import {listProductVo} from "@/api/market/prodct.js";import pictureApi from "@/utils/picture.js";export default {components: {FloatButton},onShow: function() {let categoryNameList = uni.getStorageSync("categoryNameList");if (categoryNameList) {this.categoryNameList = categoryNameList;this.searchForm.productCategoryId = uni.getStorageSync("productCategoryId");this.searchForm.keyword = this.getCategoryLayerName(this.categoryNameList);uni.removeStorageSync("categoryNameList");uni.removeStorageSync("productCategoryId");this.listProductVo();}},data() {return {title: 'Hello',// 浮动按钮的图片floatButtonPic: require("@/static/cellLeaveUnused.png"),searchForm: {// 商品搜索关键词keyword: "",productCategoryId: undefined},productList: [[],[]],loadData: false,}},onLoad() {},created() {this.listProductVo();},methods: {/*** 查询商品vo集合*/listProductVo() {this.loadData = true;listProductVo(this.searchForm).then(res => {this.loadData = false;// console.log("listProductVo:" + JSON.stringify(res))let productVoList = res.rows;this.productList = [[],[]];for (var i = 0; i < productVoList.length; i++) {if (i % 2 == 0) {// 第一列数据this.productList[0].push(productVoList[i]);} else {// 第二列数据this.productList[1].push(productVoList[i]);}}})},/*** 跳转到卖闲置页面*/cellMyProduct() {console.log("我要卖闲置");uni.navigateTo({url: "/pages/sellMyProduct/sellMyProduct"})},/*** 获取高宽比 乘以 100%*/getAspectRatio(url) {return pictureApi.getAspectRatio(url);},/*** 选择分类*/selectCategory() {uni.navigateTo({url: "/pages/sellMyProduct/selectCategory"})},/*** 获取商品名称*/getCategoryLayerName() {let str = '';for (let i = 0; i < this.categoryNameList.length - 1; i++) {str += this.categoryNameList[i] + '/';}return str + this.categoryNameList[this.categoryNameList.length - 1];},/*** 查看商品的详情*/seeProductDetail(productVo) {// console.log("productVo:"+JSON.stringify(productVo))uni.navigateTo({url: "/pages/product/detail?productVo=" + encodeURIComponent(JSON.stringify(productVo))})}}}
</script><style lang="scss">.content {padding: 20rpx;.col {width: 50%;}.productVoItem {margin-bottom: 20px;.productMes {overflow: hidden;text-overflow: ellipsis;display: -webkit-box;/* 显示2行 */-webkit-line-clamp: 2;-webkit-box-orient: vertical;.productName {font-weight: bold;}}.price {color: #ff0000;font-weight: bold;.number {font-size: 22px;}}.originPrice {color: #A2A2A2;font-size: 15px;// 给文字添加中划线text-decoration: line-through;}}}
</style>

让文字只显示两行

overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
/* 显示2行 */
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;

路由跳转传递对象

因为首页已经查询到商品的很多信息了，点击查看商品详情的时候，很多信息不需要再查询一遍了，可以直接将商品的已知信息通过路由传递到新的页面去，需要注意的时候，将对象作为参数传递之前，需要先将对象进行编码

uni.navigateTo({url: "/pages/product/detail?productVo=" + encodeURIComponent(JSON.stringify(productVo))
})

将商品分为两列显示

首先将查询到的商品分为两组

let productVoList = res.rows;
this.productList = [[],[]
];
for (var i = 0; i < productVoList.length; i++) {if (i % 2 == 0) {// 第一列数据this.productList[0].push(productVoList[i]);} else {// 第二列数据this.productList[1].push(productVoList[i]);}
}

然后在布局中使用行列布局即可，即使用一行两列的方式来显示商品信息

使用中划线划掉原价

// 给文字添加中划线
text-decoration: line-through;

后端

商品

controller

 /*** 查询商品Vo列表*/@PreAuthorize("@ss.hasPermi('market:product:list')")@PostMapping("/listProductVo")@ApiOperation("获取商品列表")public TableDataInfo listProductVo(@RequestBody ProductVo productVo) {startPage();if (productVo.getProductCategoryId() != null) {// --if-- 当分类不为空的时候，只按照分类来搜索productVo.setKeyword(null);}List<ProductVo> list = productService.selectProductVoList(productVo);return getDataTable(list);}

service

/*** 查询商品Vo列表** @param productVo* @return*/
@Override
public List<ProductVo> selectProductVoList(ProductVo productVo) {
//        List<ProductVo> productVoList = new ArrayList<>();List<ProductVo> productVoList = baseMapper.selectProductVoList(productVo);///设置每个商品的图片// 获取所有商品的idList<Long> productIdList = productVoList.stream().map(item -> {return item.getId();}).collect(Collectors.toList());// 查询出所有商品的图片if (productIdList.size() > 0) {List<Picture> pictureList = pictureService.selectPictureListByItemIdListAndType(productIdList, PictureType.PRODUCT.getType());Map<Long, List<String>> itemIdAndPicList = new HashMap<>();for (Picture picture : pictureList) {if (!itemIdAndPicList.containsKey(picture.getItemId())) {List<String> picList = new ArrayList<>();picList.add(picture.getAddress());itemIdAndPicList.put(picture.getItemId(), picList);} else {itemIdAndPicList.get(picture.getItemId()).add(picture.getAddress());}}// 给每个商品设置图片for (ProductVo vo : productVoList) {vo.setPicList(itemIdAndPicList.get(vo.getId()));}}return productVoList;
}

mapper

void starNumDiffOne(@Param("productId") Long productId);

sql

  <select id="selectProductVoList" parameterType="ProductVo" resultMap="ProductVoResult">SELECTp.id,p.NAME,p.description,p.original_price,p.price,p.product_category_id,pc.NAME AS productCategoryName,p.user_id,u.user_name as username,u.nick_name as nickname,u.avatar as avatar,p.reviewer_id,u1.user_name as reviewerUserName,p.fineness,p.unit,p.STATUS,p.is_contribute,p.functional_status,p.brand_id,b.NAME AS brandNameFROMproduct AS pLEFT JOIN product_category AS pc ON p.product_category_id = pc.idLEFT JOIN brand AS b ON p.brand_id = b.idLEFT JOIN sys_user AS u ON p.user_id = u.user_idLEFT JOIN sys_user AS u1 ON p.reviewer_id = u1.user_id<where><if test="keyword != null  and keyword != ''">and p.name like concat('%', #{keyword}, '%')</if><if test="keyword != null  and keyword != ''">or p.description like concat('%', #{keyword}, '%')</if><if test="productCategoryId != null  and productCategoryId != ''">and p.product_category_id =#{productCategoryId}</if></where></select>