注意：目前该接口针对非个人开发者，且完成了认证的小程序开放（不包含海外主体）。需谨慎使用，若用户举报较多或被发现在不必要场景下使用，微信有权永久回收该小程序的该接口权限。
官网地址如下：
https://developers./miniprogram/dev/framework/open-ability/getPhoneNumber.html
1.小程序授权拿到code
wx.login({success (res) {if (res.code) {//发起网络请求wx.request({url: '/onLogin',data: {code: res.code}})} else {console.log('登录失败！' + res.errMsg)}}})
2.小程序授权获取手机号标签拿到encryptedData与iv
# 授权按钮，绑定用户点击后的方法 getPhoneNumber()<button open-type="getPhoneNumber" bindgetphonenumber="getPhoneNumber"></button>js方法：getPhoneNumber: function (e) {// 参数e是绑定的授权方法自动传入过来的, 主要是为了拿到vi和encryptedData值从后台换取用户联系方式if ("getPhoneNumber:ok" != e.detail.errMsg){wx.showToast({icon:'none',title: '快捷登陆失败'})return;}var iv = e.detail.iv;var encryptedData = e.detail.encryptedData; var code = this.data.wxCode;//小程序授权拿到的code var _this = this; api.sendPost({url: ‘’， //调用后台接口获取用户手机号码params:{encrypted: encryptedData,iv:iv,code:code},success:function(data){// 获取到的手机号码var phone = data.phone;},fail:function(msg){})}
3.后台接口
/** 获取小程序用户基本信息*/@RequestMapping(value="code2Session", method = RequestMethod.GET)public ReturnData code2Session(HttpServletRequest req,String code,String encryptedData,String iv) throws Exception {String code = req.getParameter("code");//第一步：通过code换取网页授权access_token String url = "https://api./sns/jscode2session?appid=‘你的小程序appid’&secret=‘你的小程序密钥’&js_code="+code+"&grant_type=authorization_code";JSONObject jsonObject = WXAuthUtil.doGetJson(url);Map<String,String> map=new HashMap<>();map.put("openid",jsonObject.getString("openid"));map.put("unionid",jsonObject.getString("unionid"));map.put("session_key",jsonObject.getString("session_key")); String sessionkey = jsonObject.getString("session_key");// 解密byte[] encrypData = Base64Utils.decodeFromString(encryptedData);byte[] ivData = Base64Utils.decodeFromString(iv);byte[] sessionKey = Base64Utils.decodeFromString(sessionkey);AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivData);Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");SecretKeySpec keySpec = new SecretKeySpec(sessionKey, "AES");cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);// 设置为解密模式String resultString = new String(cipher.doFinal(encrypData), "UTF-8");JSONObject object = JSONObject.parseObject(resultString);map.put("phone",object.getString("phoneNumber"));// 拿到手机号码return ReturnData.success(map);}
