UNIAPP实战项目笔记71 订单到支付和生成订单号的前后端交互

喜欢ヅ旅行 2024-03-22 16:08 42阅读 0赞

## UNIAPP实战项目笔记71 订单到支付和生成订单号的前后端交互 ##

### 思路 ###

##### 购物车页面点击结算 #####

*  发送请求:  
    传递商品数据  
    前端就拿到了订单号进行存储  
    并且跳转到确认订单页面
 *  后端  
    生成一个订单,并且返回给前端一个订单号

##### 确认订单页面 点击提交订单 #####

*  前端  
    判断是否选择了收货地址  
    发送请求:  
    \* 把订单号传递给后端
 *  后端  
    把订单的状态从待支付1,改为2已支付  
    并且把下单的商品在购物车页面的数据清空

前端传值给后端,  
后端生成订单号发给前端

##### 支付 #####

*  = > 接口SDK

### 案例截图 ###

![在这里插入图片描述][d6c8ca6c13eb4a569955e0556a50be94.png]

### 代码 ###

#### 后端代码 index.js ####

#### 前端代码 shopcart.js ####

<template>
            <view class="shop-cart">
                <template v-if=" list.length > 0 ">
                        
                    
                    <uniNavBar
                        title="购物车"
                        :rightText=" isNavBar ? '完成' : '编辑'"
                        fixed="true"
                        statusBar="true"
                        @clickRight=" isNavBar = !isNavBar"
                    ></uniNavBar>
                    
                    
                    <view class="shop-item" v-for="(item,index) in list" :key="index">
                        <label for="" class="radio" @tap="selectedItem(index)">
                            <radio value="" color="#FF3333" :checked="item.checked" /> <text></text>
                        </label>
                        <image class="shop-img" :src="item.imgUrl" mode=""></image>
                        <view class="shop-text">
                            <view class="shop-name">
                                {
        {
        item.name}}
                            </view>
                            <view class="shop-color f-color">
                                {
        {
        item.color}}
                            </view>
                            <view class="shop-price">
                                <view class="">
                                    ￥{
        {
        item.pprice}}
                                </view>
                                <template v-if="!isNavBar">
                                    <view>x {
        {
        item.num}}</view>
                                </template>
                                <template v-else>
                                    <uniNumberBox
                                        :value="item.num"
                                        :min=1
                                        @change="changeNumber($event,index,item)"
                                    ></uniNumberBox>
                                </template>
                            </view>
                        </view>
                    </view>
                    
                    <view class="shop-foot">
                        <label for="" class="radio foot-radio" @tap='checkedAllFn'>
                            <radio value="" color="#FF3333" :checked="checkedAll"></radio><text>全选</text>
                        </label>
                        <template v-if="!isNavBar">
                            <view class="foot-total">
                                <view class="foot-count">
                                    合计：
                                    <text class="f-active-color">
                                        ￥{
        {
        totalCount.pprice}}
                                    </text>
                                </view>
                                <view class="foot-num" @tap="goConfirmOrder">
                                    结算({
        {
        totalCount.num}})
                                </view>
                            </view>
                        </template>
                        <template v-else>
                            <view class="foot-total">
                                <view class="foot-num" style="background-color: black;">
                                    移入收藏夹
                                </view>
                                <view class="foot-num" @tap="delGoodsFn">
                                    删除
                                </view>
                            </view>
                        </template>
                    </view>
                    
                </template>
                <template v-else>
                    <uniNavBar 
                        title="购物车"
                        fixed="true"
                        statusBar="true"
                    ></uniNavBar>
                    <view class="shop-else-list">
                        <text>囧~ 购物车还是空的~</text>
                    </view>
                </template>
                <Tabbar currentPage='shopcart'></Tabbar>
            </view>
        </template>
    
        <script>
            import $http from '@/common/api/request.js'
            import uniNavBar from '@/components/uni/uni-nav-bar/uni-nav-bar.vue'
            import uniNumberBox from '@/components/uni/uni-number-box/uni-number-box.vue'
            import Tabbar from '@/components/common/Tabbar.vue';//引入
            
            // 状态机引入
            import {
        mapState,mapActions,mapGetters,mapMutations} from 'vuex'
            export default {
        
                data() {
        
                    return {
        
                        isNavBar:false,
                    }
                },
                computed:{
        
                    // 状态机数据处理
                    ...mapState({
        
                        list:state=>state.cart.list,
                        selectedList:state=>state.cart.selectedList,
                    }),
                    ...mapGetters(['checkedAll','totalCount'])
                },
                components:{
        
                    uniNavBar,uniNumberBox,Tabbar
                },
                onShow() {
        
                  this.getData();  
                },
                methods: {
        
                    ...mapActions(['checkedAllFn','delGoodsFn']),
                    ...mapMutations(['selectedItem','initGetData','initOrder']),
                    getData(){
        
                        $http.request({
        
                            url:'/selectCart',
                            method:"POST",
                            header:{
        
                                token:true
                            }
                        }).then((res)=>{
        
                            this.initGetData(res)
                        }).catch(()=>{
        
                            uni.showToast({
        
                            title:'请求失败',
                            icon:'none'
                            })
                        })
                    },
                    changeNumber(value,index,item){
        
                        if ( value == item.num ) return;
                        $http.request({
        
                            url:'/updateCart',
                            method:"POST",
                            header:{
        
                                token:true
                            },
                            data:{
        
                                goodsId:item.goods_id,
                                num:value
                            }
                        }).then((res)=>{
        
                            this.list[index].num = value;
                        }).catch(()=>{
        
                            uni.showToast({
        
                            title:'请求失败',
                            icon:'none'
                            })
                        })
                    },
                    // 进入确认订单
                    goConfirmOrder(){
        
                        
                        if(this.selectedList.length === 0){
        
                            return uni.showToast({
        
                                title:"至少选择一件商品",
                                icon:"none"
                            })
                        }
                        
                        let newList = [];
                        this.list.forEach(item=>{
        
                            this.selectedList.filter(v=>{
        
                                if( item.id == v ){
        
                                    newList.push( item );
                                }
                            })
                        })
                        
                        $http.request({
        
                            url:'/addOrder',
                            method:"POST",
                            header:{
        
                                token:true
                            },
                            data:{
        
                                arr:newList
                            }
                        }).then((res)=>{
        
                            console.log(res);
                            if( res.success ){
        
                                // 存储订单号
                                this.initOrder( res.data[0].order_id);
                                // 跳转页面
                                uni.navigateTo({
        
                                    url:`/pages/confirm-order/confirm-order?detail=${
          JSON.stringify(this.selectedList)}`
                                })  
                            }
                        }).catch(()=>{
        
                            uni.showToast({
        
                            title:'请求失败',
                            icon:'none'
                            })
                        })
                        
                    }
                }
            }
        </script>
    
        <style lang="scss">
    
        .shop-list{
        
            padding-bottom: 100rpx;
        }
        .shop-else-list{
        
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            background-color: #f7f7f7;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .shop-item{
        
            display: flex;
            padding: 20rpx;
            align-items: center;
            background-color: #f7f7f7;
            margin-bottom: 10rpx;
        }
        .shop-img{
        
            width: 200rpx;
            height: 200rpx;
        }
        .shop-text{
        
            flex: 1;
            padding-left: 20rpx;
        }
        .shop-color{
        
            font-size: 24rpx;
        }
        .shop-price{
        
            display: flex;
            justify-content: space-between;
        }
    
        .shop-foot{
        
            border-top: 2rpx solid #f7f7f7;
            background-color: #FFFFFF;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100rpx;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 120rpx;
        }
        .foot-radio{
        
            padding-left: 20rpx;
        }
        .foot-total{
        
            display: flex;
        }
        .foot-count{
        
            line-height: 100rpx;
            padding: 0 20rpx;
            font-size: 32rpx;
        }
        .foot-num{
        
            background-color: #49bdfb;
            color: #FFFFFF;
            padding: 0 60rpx;
            line-height: 100rpx;
        }
        </style>

#### 前端 payment.vue ####

<template>
        <view>
            <view class="">
                
                
                    <uniNavBar
                        title='确认支付'
                        left-text='关闭'
                        fixed='true'
                        @clickLeft='goBack'
                    ></uniNavBar>
                
                
                    <uniNavBar
                        title='确认支付'
                        left-text='关闭'
                        fixed='true'
                        @clickLeft='goBack'
                    ></uniNavBar>
                
                
            </view>
    
            <view class="pay-main">
                <radio-group>
                    
                    <label for="">
                    <view class="pay-item">
                        <image class="pay-img" src="../../static/img/zfbzf.png" mode=""></image>
                        <view class="">
                            <view class="">支付宝支付</view>
                            <view class="pay-txt">推荐支付宝用户使用</view>
                        </view>
                        <label class="radio">
                            <radio value="" color="#ff3333"/><text></text>
                        </label>
                    </view>
                    </label>
                    <label for="">
                    <view class="pay-item">
                        <image class="pay-img" src="../../static/img/wxzf.jpg" mode=""></image>
                        <view class="">
                            <view class="">微信支付</view>
                            <view class="pay-txt">推荐微信的用户使用</view>
                        </view>
                        <label class="radio">
                            <radio value="" color="#ff3333"/><text></text>
                        </label>
                    </view>
                    </label>
                
                </radio-group>
            </view>
            <view class="pay-foot">
                <view class="total">
                    <text class="f-color">合计:</text>
                    <text class="total-price">￥{
        {
        details.price}}</text>
                </view>
                <view class="go-pay" @tap="goPayment">
                    去支付
                </view>
            </view>
        </view>
    </template>
    
    <script>
        import uniNavBar from '@/components/uni/uni-nav-bar/uni-nav-bar.vue'
        export default {
        
            data() {
        
                return {
        
                    details:{
        
                        price:0
                    }
                };
            },
            components:{
        
                uniNavBar
            },
            onLoad(e) {
        
                this.details = JSON.parse( e.details );
            },
            methods:{
        
                // 点击关闭返回上一页
                goBack(){
        
                    uni.navigateBack();
                },
                // 跳转到支付成功
                goPayment(){
        
                    uni.navigateTo({
        
                        url:'/pages/payment-success/payment-success'
                    })
                }
            }
        }
    </script>
    
    <style lang="scss">
    .pay-item{
        
        display:flex;
        justify-content: space-between;
        align-items: center;
        padding: 20rpx;
        border-bottom: 2rpx solid #ccc;
    }
    .pay-txt{
        
        color: #bbb;
    }
    .pay-img{
        
        width: 100rpx;
        height: 100rpx;
    }
    .pay-foot{
        
        width: 100%;
        position: fixed;
        left: 0;
        bottom: 0;
        height: 100rpx;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .total-price{
        
        color: #fff;
    }
    .total{
        
        padding-left: 100rpx;
        flex: 1;
        background-color: #000;
        line-height: 100rpx;
    }
    .go-pay{
        
        color: #fff;
        background-color: #49bdfb;
        line-height: 100rpx;
        text-align: center;
        width: 220rpx;
    }
    .f-color{
        
        color: #ccc;
    }
    </style>

#### 目录结构 ####

##### 前端目录结构 #####

*  manifest.json 配置文件： appid、logo…
 *  pages.json 配置文件： 导航、 tabbar、 路由
 *  
 *  main.js vue初始化入口文件
 *  App.vue 全局配置：样式、全局监视
 *  static 静态资源：图片、字体图标
 *  page 页面
    
     *  index
        
         *  index.vue
     *  list
        
         *  list.vue
     *  my
        
         *  my.vue
     *  my-config
        
         *  my-config.vue
     *  my-config
        
         *  my-config.vue
     *  my-add-path
        
         *  my-add-path.vue
     *  my-path-list
        
         *  my-path-list.vue
     *  search
        
         *  search.vue
     *  search-list
        
         *  search-list.vue
     *  shopcart
        
         *  shopcart.vue
     *  details
        
         *  details.vue
     *  my-order
        
         *  my-order.vue
     *  confirm-order
        
         *  confirm-order.vue
     *  payment
        
         *  payment.vue
     *  payment-success
        
         *  payment-success.vue
     *  login
        
         *  login.vue
     *  login-tel
        
         *  `login-tel.vue`
     *  login-code
        
         *  `login-code.vue`
 *  components 组件
    
     *  index
        
         *  Banner.vue
         *  Hot.vue
         *  Icons.vue
         *  indexSwiper.vue
         *  Recommend.vue
         *  Shop.vue
         *  `Tabbar.vue`
     *  common
        
         *  Card.vue
         *  Commondity.vue
         *  CommondityList.vue
         *  Line.vue
         *  ShopList.vue
     *  order
        
         *  order-list.vue
     *  uni
        
         *  uni-number-box
            
             *  uni-number-box.vue
         *  uni-icons
            
             *  uni-icons.vue
         *  uni-nav-bar
            
             *  uni-nav-bar.vue
         *  mpvue-citypicker
            
             *  mpvueCityPicker.vue
 *  common 公共文件：全局css文件 || 全局js文件
    
     *  api
        
         *  request.js
     *  common.css
     *  uni.css
 *  store vuex状态机文件
    
     *  modules
        
         *  cart.js
         *  path.js
         *  user.js
     *  index.js

[d6c8ca6c13eb4a569955e0556a50be94.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/76541a6413f2406393f3cd61420afb09.png