微信小程序任何的语言都可以做后台，现在微信小程序推出云函数，做后台也可以。但是自己感觉想要完整的后台，做后台用java和php更好点。下面以典型的例证给大家做一下讲解，注册。
1、wmxl
微信小程序的前段代码（提交数据主要以from表单实现的）
<view> <button formType="reset">请完善注册信息</button> </view> <form catchsubmit="formSubmit" catchreset="formReset"> <view> <view> <text>姓名</text> <view> <input type="text" auto-focus placeholder="请输入您的姓名" bindinput="inputName"></input> </view> </view> <view> <text>性别</text> <picker bindchange="bindPickerChange" data-pickername="industry" value="{{industryindex}}" range="{{industryarr}}" mode="selector">{{industryarr[industryindex]}} </picker> </view> <view> <text>账号</text> <view> <input type="idcard" placeholder="请输入您的手机号码" maxlength="11" bindinput="inputPhone"></input> </view> </view> <view> <text>登录密码</text> <view> <input type="password" auto-focus placeholder="请设置登录密码" bindinput="inputName"></input> </view> </view> <view> <text>邮箱</text> <view> <input type="text" auto-focus placeholder="请输入您的邮箱" bindinput="inputName"></input> </view> </view> <view> <text>注册vip</text> <picker bindchange="bindPickerChange" data-pickername="status" value="{{statusindex}}" range="{{statusarr}}" mode="selector">{{statusarr[statusindex]}} </picker> </view> </view> <view> <button type="primary" formType="submit">提交</button> <button formType="reset">置空</button> </view> </form>
2、wxss
/**app.wxss**/ /**app.wxss**/ page{ height: 100%; color: #333; display: flex; flex-direction: column; font: normal 30rpx/1.68 -apple-system-font, 'Helvetica Neue', Helvetica, 'Microsoft YaHei', sans-serif; } .container { flex: 1; display: flex; flex-direction: column; box-sizing: border-box; } .container-body{ flex: 1; overflow-y: auto; overflow-x: hidden; } .container-footer{ width: 100%; display: flex; height: 88rpx; border-top: 1rpx solid #ddd; background: #fff; } .container-footer text{ flex: 1; display: block; text-align: center; height: 88rpx; line-height: 88rpx; font-size: 34rpx; border-left: 1rpx solid #ddd; } .container-footer text:first-child{ border-left: none; } .container-footer .btn-block{ border-radius: 0; } .container-footer .btn-block:after{ border: none; } .container-gray{ background: #f9f9f9; } input{ height: 60rpx; line-height: 60rpx; font-family: inherit; } .input-list{ padding: 0 20rpx; margin: 20rpx 0; background: #fff; border-top: 1rpx solid #ddd; border-bottom: 1rpx solid #ddd; } .input-list .input-item{ padding: 20rpx; line-height: 2; display: flex; font-size: 30rpx; border-top: 1rpx solid #e8e8e8; } .input-list .input-item:first-child{ border-top: 0; } .input-item-label{ display: block; width: 5em; color: #666; } .input-item-content{ color: #333; flex:1; } .input-item.input-item-full{ display: block; } .input-item.input-item-full .input-item-label{ width: 100%; } .input-item.input-item-full .input-item-content{ width: 100%; } .input-item.input-item-full textarea{ padding: 0; height: 150rpx; border: 1rpx solid #e8e8e8; padding: 10rpx; } .input-item.input-item-full .img-upload{ padding: 0; } .input-item.input-item-adaption .input-item-label{ width: auto; margin-right: 20rpx; } button{ font-size: 32rpx; line-height: 72rpx; } textarea{ width: 100%; padding: 20rpx; box-sizing: border-box; } radio-group radio{ position:absolute; left: -999em; } radio-group label{ margin-right: 16rpx; } radio-group label:before{ content: ''; display: inline-block; width: 40rpx; height: 40rpx; vertical-align: -8rpx; margin-right: 4rpx; } .btn-submit{ padding: 20rpx; } .btn-block{ width: 100%; line-height: 88rpx; } .btn-orange{ background: #f7982a; color: #fff; } .btn-gray{ background: #e8e8e8; color: #333; } .search-flex{ display: flex; padding: 20rpx; border-bottom: 1rpx solid #ddd; position: relative; z-index: 13; background: #f9f9f9; /* transform: translateY(-100%); */ margin-top: 0; transition: all 0.3s; } .search-flex.tophide{ margin-top: -117rpx; } .search-flex button{ background: #f7982a; color: #fff; line-height: 72rpx; height: 72rpx; font-size: 30rpx; border-radius: 6rpx; } .search-bar{ flex: 1; display: flex; border: 1rpx solid #e8e8e8; border-radius: 6rpx; } .search-bar input{ flex: 1; height: 72rpx; line-height: 72rpx; padding: 0 10rpx; background: #fff; } .search-extra-btn{ margin-left: 20rpx; white-space: nowrap; } .filter-tab{ display: flex; width: 100%; line-height: 80rpx; border-bottom: 1rpx solid #ddd; position: relative; z-index: 2; background: #fff; } .filter-tab text{ flex: 1; text-align: center; } .filter-tab text:after{ content: ''; display: inline-block; vertical-align: 4rpx; width: 0; height: 0; border-left: 12rpx solid transparent; border-right: 12rpx solid transparent; border-top: 12rpx solid #bbb; margin-left: 8rpx; } .filter-tab text.active{ color: #f7982a; } .filter-tab:not(.sort-tab) text.active:after{ border-top: 0; border-bottom: 12rpx solid #f7982a; } .filter-tab.sort-tab text.active:after{ border-top: 12rpx solid #f7982a; } .filter-panel{ display: flex; background: #f5f5f5; position: absolute; width: 100%; z-index: 13; overflow: hidden; } .filter-panel-left,.filter-panel-right{ flex: 1; line-height: 80rpx; text-align: center; max-height: 480rpx; overflow-y: auto; } .filter-panel-left .active{ background: #fff; } .filter-panel-right .active{ color: #f7982a; } .filter-panel-right{ background: #fff; } .filter-panel-right:empty{ display: none; } .filter-shadow{ position: absolute; width: 100%; top: 0; bottom: 0; z-index: 1; background: rgba(0,0,0,.5); } .gototop{ width: 70rpx; height: 70rpx; position: fixed; bottom: 20rpx; right: 20rpx; transition: all 0.3s; opacity: 0; transform: translateY(200rpx); } .gototop.active{ opacity: 1; transform: translateY(0); } .group{ display: block; width: 100%; } .group-header{ line-height: 70rpx; display: flex; padding: 0 20rpx; background: #f9f9f9; } .group-body{ background: #fff; border-top: 1rpx solid #ddd; border-bottom: 1rpx solid #ddd; } .group-body .input-list{ margin: 0; border: none; } .img-upload{ padding: 20rpx; font-size: 0; overflow: hidden; } .img-upload .img-item, .img-upload .img-add{ width: 100rpx; height: 100rpx; float: left; margin: 10rpx; border: 1rpx solid transparent; } .img-upload .img-add{ border: 1rpx dashed #ddd; } .img-upload .img-item image{ width: 100rpx; height: 100rpx; } .img-upload .img-item{ position: relative; } .img-upload .img-item icon{ position: absolute; right: -12rpx; top: -12rpx; } .container { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: space-between; padding: 200rpx 0; box-sizing: border-box; }
3、js
js是重点，他是一个中间桥梁，获取微信小程序前端的数值和传导ssm的后台。
wx.request这是微信的接口，也就是发起请求。
url: ‘:8080/lg/wechat/add',这就是你的项目的地址，也就是controller。
dada就是你要传到后台的数据。
wx.request({ url: 'http://localhost:8080/lg/wechat/add', data: { openid: openid, userpassword: userpassword, name: name, sex: app.sex, tel: tel, email: email, vip: app.vip, },
接下来是完整的js代码（获取表单的数据，这里的js包括获取openid，如果你使用，直接删除就可以）