一，数据交互准备工作
1.1 后端准备
后端部分代码，可自行创建后端代码
package com.zking.minoa.wxcontroller; import com.zking.minoa.mapper.InfoMapper; import com.zking.minoa.model.Info; import com.zking.minoa.util.ResponseUtil; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @Autho donkee * @Since 2022/6/29 */ @RestController @RequestMapping("/wx/home") public class WxHomeController { @Autowired private InfoMapper infoMapper; @RequestMapping("/index") public Object index(Info info) { List<Info> infoList = infoMapper.list(info); Map<Object, Object> data = new HashMap<Object, Object>(); data.put("infoList",infoList); return ResponseUtil.ok(data); } }
pom.xml的配置:
根据自己有更多需求进行应用配置的增加
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.6.2</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.zking</groupId> <artifactId>minoa</artifactId> <version>0.0.1-SNAPSHOT</version> <name>minoa</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <fastjson.version>1.2.70</fastjson.version> <jackson.version>2.9.8</jackson.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.2.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.44</version> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>${fastjson.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.3.2</version> <dependencies> <!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> </dependencies> <configuration> <overwrite>true</overwrite> </configuration> </plugin> </plugins> </build> </project>
访问所有数据
1.2 前端工作
为了后期方便维护，我们先将所有的后端接口通过一个文件来保存，在根目录下新建config文件夹随后建立api.js文件
// 以下是业务服务器API地址 // 本机开发API地址 var WxApiRoot = 'http://localhost:8080/wx/'; // 测试环境部署api地址 // var WxApiRoot = 'http://192.168.0.101:8070/demo/wx/'; // 线上平台api地址 //var WxApiRoot = 'https://www.oa-mini.com/demo/wx/'; module.exports = { IndexUrl: WxApiRoot + 'home/index', //首页数据接口 SwiperImgs: WxApiRoot+'swiperImgs', //轮播图 MettingInfos: WxApiRoot+'meeting/list', //会议信息 };
1.2.1请求方式的封装
loadMeetingInfos(){ let that=this; wx.request({ url: api.IndexUrl, dataType: 'json', success(res) { console.log(res) that.setData({ lists:res.data.data.infoList }) } }) }
在/utils/util.js中添加下列代码:
/** * 封装微信的request请求 */ function request(url, data = {}, method = "GET") { return new Promise(function (resolve, reject) { wx.request({ url: url, data: data, method: method, header: { 'Content-Type': 'application/json', }, success: function (res) { if (res.statusCode == 200) { resolve(res.data);//会把进行中改变成已成功 } else { reject(res.errMsg);//会把进行中改变成已失败 } }, fail: function (err) { reject(err) } }) }); }
注意在module.exports中导出和需要使用的页面js中使用时定义：const util = require("../../utils/util")
//首页会议信息的ajax loadMeetingInfos() { let that = this; util.request(api.IndexUrl).then(res => { this.setData({ lists: res.data.infoList }) }) }
二，实现数据交互
前端wxml:
<!--index.wxml--> <view> <swiper autoplay="true" indicator-dots="true"> <block wx:for="{{imgSrcs}}" wx:key="text"> <swiper-item> <view> <image src="{{item.img}}" class="swiper-item" /> </view> </swiper-item> </block> </swiper> </view> <view class="mobi-title"> <text class="mobi-icon"></text> <text class="mobi-text">会议信息</text> </view> <block wx:for-items="{{lists}}" wx:for-item="item" wx:key="item.id"> <view class="list" data-id="{{item.id}}"> <view class="list-img"> <image class="video-img" mode="scaleToFill" src="{{item.image !=null? item.image : '/static/persons/6.png'}}"></image> </view> <view class="list-detail"> <view class="list-title"><text>{{item.title}}</text></view> <view class="list-tag"> <view class="state">{{item.state}}</view> <view class="join"><text class="list-num">{{item.num}}</text>人报名</view> </view> <view class="list-info"><text>{{item.location}}</text>|<text>{{item.starttime}}</text></view> </view> </view> </block> <view class="section"> <text>到底啦</text> </view>
前端wxss:
/**index.wxss**/ .section{ color: #aaa; display: flex; justify-content: center; } .list-info { color: #aaa; } .list-num { color: #e40909; font-weight: 700; } .join { padding: 0px 0px 0px 10px; color: #aaa; } .state { margin: 0px 6px 0px 6px; border: 1px solid #93b9ff; color: #93b9ff; } .list-tag { padding: 3px 0px 10px 0px; display: flex; align-items: center; } .list-title { display: flex; justify-content: space-between; font-size: 11pt; color: #333; font-weight: bold; } .list-detail { display: flex; flex-direction: column; margin: 0px 0px 0px 15px; } .video-img { width: 80px; height: 80px; } .list { display: flex; flex-direction: row; border-bottom: 1px solid #6b6e74; padding: 10px; } .mobi-text { font-weight: 700; padding: 15px; } .mobi-icon { border-left: 5px solid #e40909; } .mobi-title { background-color: rgba(158, 158, 142, 0.678); margin: 10px 0px 10px 0px; } .swiper-item { height: 300rpx; width: 100%; border-radius: 10rpx; } .userinfo { display: flex; flex-direction: column; align-items: center; color: #aaa; } .userinfo-avatar { overflow: hidden; width: 128rpx; height: 128rpx; margin: 20rpx; border-radius: 50%; } .usermotto { margin-top: 200px; }
三，WXS的使用
WXS 代码可以编写在 wxml 文件中的 <wxs> 标签内，或以 .wxs 为后缀名的文件内
在wxs中，可以使用一些内置的方法和对象来实现数据处理，如Math、Date等。同时，也可以使用一些自定义的函数和变量来实现特定的业务逻辑
通过后台数据交互和wxs应用，可以实现小程序的数据展示、数据操作和业务逻辑的实现。同时，也可以提高小程序的性能和用户体验
3.1 WXS文件
在项目中的utils文件中创建 .wxs 文件，名为: comm.wxs
comm.wxs代码：
function getState(state){ // 状态：0取消会议1待审核2驳回3待开4进行中5开启投票6结束会议，默认值为1 if(state == 0 ){ return '取消会议'; }else if(state == 1 ){ return '待审核'; }else if(state == 2 ){ return '驳回'; }else if(state == 3 ){ return '待开'; }else if(state == 4 ){ return '进行中'; }else if(state == 5 ){ return '开启投票'; }else if(state == 6 ){ return '结束会议'; } return '其它'; } var getNumber = function(str) { var s = str+''; var array = s.split(','); var len = array.length; return len; } function formatDate(ts, option) { var date = getDate(ts) var year = date.getFullYear() var month = date.getMonth() + 1 var day = date.getDate() var week = date.getDay() var hour = date.getHours() var minute = date.getMinutes() var second = date.getSeconds() //获取 年月日 if (option == 'YY-MM-DD') return [year, month, day].map(formatNumber).join('-') //获取 年月 if (option == 'YY-MM') return [year, month].map(formatNumber).join('-') //获取 年 if (option == 'YY') return [year].map(formatNumber).toString() //获取 月 if (option == 'MM') return [mont].map(formatNumber).toString() //获取 日 if (option == 'DD') return [day].map(formatNumber).toString() //获取 年月日 周一 至 周日 if (option == 'YY-MM-DD Week') return [year, month, day].map(formatNumber).join('-') + ' ' + getWeek(week) //获取 月日 周一 至 周日 if (option == 'MM-DD Week') return [month, day].map(formatNumber).join('-') + ' ' + getWeek(week) //获取 周一 至 周日 if (option == 'Week') return getWeek(week) //获取 时分秒 if (option == 'hh-mm-ss') return [hour, minute, second].map(formatNumber).join(':') //获取 时分 if (option == 'hh-mm') return [hour, minute].map(formatNumber).join(':') //获取 分秒 if (option == 'mm-dd') return [minute, second].map(formatNumber).join(':') //获取 时 if (option == 'hh') return [hour].map(formatNumber).toString() //获取 分 if (option == 'mm') return [minute].map(formatNumber).toString() //获取 秒 if (option == 'ss') return [second].map(formatNumber).toString() //默认 时分秒 年月日 return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, second].map(formatNumber).join(':') } function formatNumber(n) { n = n.toString() return n[1] ? n : '0' + n } function getWeek(n) { switch(n) { case 1: return '星期一' case 2: return '星期二' case 3: return '星期三' case 4: return '星期四' case 5: return '星期五' case 6: return '星期六' case 7: return '星期日' } } function getNum(canyuze,liexize,zhuchiren){ var person= (canyuze +","+liexize+","+zhuchiren); return person.split(",").length; }; module.exports = { getState: getState, getNumber: getNumber, formatDate:formatDate };
util.js:
const formatTime = date => { const year = date.getFullYear() const month = date.getMonth() + 1 const day = date.getDate() const hour = date.getHours() const minute = date.getMinutes() const second = date.getSeconds() return `${[year, month, day].map(formatNumber).join('/')} ${[hour, minute, second].map(formatNumber).join(':')}` } const formatNumber = n => { n = n.toString() return n[1] ? n : `0${n}` } /** * 封装微信的request请求 */ function request(url, data = {}, method = "GET") { return new Promise(function (resolve, reject) { wx.request({ url: url, data: data, method: method, header: { 'Content-Type': 'application/json', }, success: function (res) { if (res.statusCode == 200) { resolve(res.data);//会把进行中改变成已成功 } else { reject(res.errMsg);//会把进行中改变成已失败 } }, fail: function (err) { reject(err) } }) }); } module.exports = { formatTime,request }
再修改首页页面中的 index.wxml 文件，在需要使用的页面进行引用即可
<wxs src="/utils/comm.wxs" module="tools" /> <view> {{tools.msg}} </view> <view> {{tools.bar(tools.FOO)}} </view>
3.2 页面
前端首页总代码
<!-- <wxs src="../../utils/util"> </wxs> --> <view class="indexbg"> <swiper autoplay="true" indicator-dots="true" indicator-color="#fff" indicator-active-color="#00f"> <block wx:for="{{imgSrcs}}" wx:key="text"> <swiper-item> <view> <image src="{{item.img}}" class="swiper-item" /> </view> </swiper-item> </block> </swiper> <wxs src="/utils/comm.wxs" module="tools" /> <view> {{tools.msg}} </view> <view> {{tools.bar(tools.FOO)}} </view> <view class="mobi-title"> <text class="mobi-text">会议信息</text> </view> <block wx:for-items="{{lists}}" wx:for-item="item" wx:key="item.id" class="bg"> <view class="list" data-id="{{item.id}}"> <view class="list-img"> <image class="video-img" mode="scaleToFill" src="{{item.image!=null?item.image:'/static/persons/2.jpg'}}"></image> </view> <view class="list-detail"> <view class="list-title"><text>{{item.title}}</text></view> <view class="list-tag"> <view class="state">{{tools.getState(item.state)}}</view> <view class="join"><text class="list-num">{{tools.getNumber(item.canyuze,item.liexize,item.zhuchiren)}}</text>人报名</view> </view> <view class="list-info"><text>{{item.location}}</text>|<text>{{tools.formatDate(item.starttime)}}</text></view> </view> </view> </block> <view class="section"> <text>到底啦</text> </view> </view>
效果：
