uniapp 小程序 获取手机号---通过前段获取

<template><!-- 获取手机号，登录内容 --><view><!-- 首先需要先登录获取code码，然后才可以获取用户唯一标识openid以及会话密钥及用于解密获取手机的加密信息 --><view @click="login">登录</view><view class="" @click="get_miyao" style="padding: 40rpx;">获取密钥session_key</view><!-- 获取手机号的加密 --><button open-type="getPhoneNumber" @getphonenumber="getPhoneNumber">获取电话</button><!-- <view @click="check_user">检查是否登录</view> --><view class="" @click="get_user">获取用户信息</view><view @click="jiemi">解密</view><view class="" style="height: 60rpx;"> ========== </view><br><image :src="user_img" mode="" alt="暂无图片"></image><view class="red">用户名：{{user_name}}</view><text class="blue">微信登录成功：{{login_code}}</text><view class="red">手机号：{{phone}}</view><view class="blue">用户唯一标识openid：{{openid}}</view><view class="red">会话密钥-sessionkey：{{session_key}}</view><view class="blue">手机-encryptedData：{{phone_encryptedData}}</view><view class="red">手机-iv：{{phone_iv}}</view><view class="blue">手机-code：{{phone_code}}</view></view>
</template><script>//import WXBizDataCrypt from "@/static/wx/WXBizDataCrypt.js"import WXBizDataCrypt from "../../utils/WXBizDataCrypt"export default {data() {return {phone:'无',user_img:'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSNuo1br3pHCs7Y-RLdS0oc-dflmDaUdm_Jkg&usqp=CAU',user_name:'空',login_code:'空', // 登录返回code码，用于获取用户唯一标识和会话密钥openid:'',// 用户唯一标识session_key:'',// 会话密钥phone_encryptedData:'',phone_iv:'',phone_code:''}},methods: {login(){ // 微信登录uni.login({provider: 'weixin',success: res => {debuggerconsole.log(res)this.login_code = res.code}});},check_user(){ // 检查是否登录uni.checkSession({success:res => {console.log(res)}})},get_user(){ // 获取用户信息uni.getUserProfile({desc: '用户登录',success: res => {console.log(res)this.user_img = res.userInfo.avatarUrlthis.user_name = res.userInfo.nickName}})},getPhoneNumber(res){ // 获取手机号console.log(res)this.phone_code = res.detail.codethis.phone_encryptedData = res.detail.encryptedDatathis.phone_iv = res.detail.iv},get_miyao(){ // 获取密钥 === 需要登录才可以获取密钥uni.request({url: 'https://api.weixin.qq.com/sns/jscode2session',method:'GET',data: {appid: 'wx4e70a3d6c0f866f3',        //你的小程序的APPIDsecret: '9ee0d4c6e1a996fbd90725f4a7176e5f',    //你的小程序秘钥secret,js_code: this.login_code,    //wx.login 登录成功后的codegrant_type:'authorization_code'},success: (res) => {console.log('获取信息',res);  // 换取成功后 暂存这些数据 留作后续操作this.openid=res.data.openid    //openid 用户唯一标识this.session_key=res.data.session_key    //session_key  会话密钥}});},jiemi(){ // 解密需要appid 会话密钥；然后需要手机号的加密字段-let pc = new WXBizDataCrypt('wx4e70a3d6c0f866f3',this.session_key);let data = pc.decryptData(this.phone_encryptedData , this.phone_iv);  console.log(data)       //data就是最终解密的用户信息debuggerthis.phone = data.phoneNumber}}}
</script><style scoped>
image{width: 100rpx;height: 100rpx;
}
.red{background-color: #DD524D;margin: 20rpx 0;
}
.blue{background-color: #007AFF
}
</style>

js 解密文件

import WXBizDataCrypt from "../../utils/WXBizDataCrypt"

//WXBizDataCrypt.js
var crypto = require('crypto')function WXBizDataCrypt(appId, sessionKey) {this.appId = appIdthis.sessionKey = sessionKey
}WXBizDataCrypt.prototype.decryptData = function (encryptedData, iv) {// base64 decodevar sessionKey = new Buffer(this.sessionKey, 'base64')encryptedData = new Buffer(encryptedData, 'base64')iv = new Buffer(iv, 'base64')try {// 解密var decipher = crypto.createDecipheriv('aes-128-cbc', sessionKey, iv)// 设置自动 padding 为 true，删除填充补位decipher.setAutoPadding(true)var decoded = decipher.update(encryptedData, 'binary', 'utf8')decoded += decipher.final('utf8')decoded = JSON.parse(decoded)} catch (err) {throw new Error('Illegal Buffer')}if (decoded.watermark.appid !== this.appId) {throw new Error('Illegal Buffer')}return decoded
}module.exports = WXBizDataCrypt