微信小程序数据交互------WXS的使用-编程知识

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1.数据库连接

数据表结构：

数据测式：

2.后台配置

pom.xml

<?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.CloudJun</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>

appliation.yml

spring:datasource:#type连接池类型 DBCP,C3P0,Hikari,Druid,默认为Hikaritype: com.zaxxer.hikari.HikariDataSourcedriver-class-name: com.mysql.jdbc.Driverurl: jdbc:mysql://localhost:3306/mybatis_oapro?useUnicode=true&characterEncoding=UTF-8&useSSL=falseusername: rootpassword: 123456
mybatis:mapper-locations: classpath*:mapper/*.xml #指定mapper文件位置type-aliases-package: com.zking.minoa.model #指定自动生成别名所在包logging:level:root: infocom.zking.minoa.mapper: debug

3.前端代码

index.wxml


<!-- <view class="box">
<view>1</view>
<view>2</view>
<view>3</view>
<view>4</view>
<view>5</view>
<view>6</view>
<view>7</view>
<view>8</view>
<view>9</view>
<view>10</view>
<view>11</view>
<view>12</view>
</view> -->
<!--index.wxml--><!--index.wxml-->
<view><swiper autoplay="true" indicator-dots="true" indicator-color="#fff" indicator-active-color="#00f"><block wx:for="{{images}}" wx:key="text"><swiper-item><view><image src="{{item.img}}" class="swiper-item" /></view></swiper-item></block></swiper>
</view>
<wxs src="/utils/comm.wxs" module="tools" />
<view class="mobi-title"><text class="mobi-icon"></text><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.seatpic}}"></image></view><view class="list-detail"><view class="list-title"><text>{{item.title}}</text></view><view class="list-tag"><view class="state">{{tools.getStateName(item.state)}}</view><view class="join"><text class="list-num">{{tools.getNum
(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 bottom-line"><text>到底啦</text>
</view>

index.wxss

/* pages/meeting/list/list.wxss */
.list {display: flex;flex-direction: row;width: 100%;padding: 0 20rpx 0 0;border-top: 1px solid #eeeeee;background-color: #fff;margin-bottom: 5rpx;/* border-radius: 20rpx;box-shadow: 0px 0px 10px 6px rgba(0,0,0,0.1); */
}.list-img {display: flex;margin: 10rpx 10rpx;width: 150rpx;height: 220rpx;justify-content: center;align-items: center;
}.list-img .video-img {width: 120rpx;height: 120rpx;}.list-detail {margin: 10rpx 10rpx;display: flex;flex-direction: column;width: 600rpx;height: 220rpx;
}.list-title text {font-size: 11pt;color: #333;font-weight: bold;
}.list-detail .list-tag {display: flex;height: 70rpx;
}.list-tag .state {font-size: 9pt;color: #81aaf7;width: 120rpx;border: 1px solid #93b9ff;border-radius: 2px;margin: 10rpx 0rpx;display: flex;justify-content: center;align-items: center;
}.list-tag .join {font-size: 11pt;color: #bbb;margin-left: 20rpx;display: flex;justify-content: center;align-items: center;
}.list-tag .list-num {font-size: 11pt;color: #ff6666;
}.list-info {font-size: 9pt;color: #bbb;margin-top: 20rpx;
}
.bottom-line{display: flex;height: 60rpx;justify-content: center;align-items: center;background-color: #f3f3f3;
}
.bottom-line text{font-size: 9pt;color: #666;
}

效果展示：

4.WXS的使用

WXS（WeChat Mini Program Storage）是微信小程序提供的本地存储方案，用于在小程序中进行数据的存储和管理。相比远程数据库，WXS更适合于小规模、简单的数据存储需求。

4.1.wxs 文件

在微信开发者工具里面，右键可以直接创建 .wxs 文件，在其中直接编写 WXS 脚本。

// /pages/comm.wxsvar foo = "'hello world' from comm.wxs";
var bar = function(d) {return d;
}
module.exports = {foo: foo,bar: bar
};

exports: 通过该属性，可以对外共享本模块的私有变量与函数。

在需要使用的页面进行引用即可

<wxs src="/tools.wxs" module="tools" />
<view> {{tools.msg}} </view>
<view> {{tools.bar(tools.FOO)}} </view>

4.2.解决数据显示数字问题

function getStateName(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1if(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';}
module.exports = {getStateName:getStateName,};

4.3.解决统计人数问题

function getNum(canyuze,liexize,zhuchiren){
var person = canyuze + "," +liexize +","+ zhuchiren; 
var arr = person.split(",");
var res =[];
for(var i = 0; i < arr.length; i++){
if(res.indexOf(arr[i] === -1)){
res.push(arr[i]);
}
}return res.length;
}
module.exports = {getNum:getNum,};

4.4.解决时间进制问题

function formatDate(ts, option) {var date = getDate(ts)var year = date.getFullYear()var month = date.getMonth() + 1var 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'}
}
module.exports = 
formatDate:formatDate,};

效果展示：