getPhoneNumber(e) {   console.log(e.detail);   const encryptedData = e.detail.encryptedData;   const iv = e.detail.iv;   this.reLogin(encryptedData,iv); }, reLogin(encryptedData, iv){   const _that = this;   wx.login({     success(res) {       if (res.code) {         console.log();         //发起网络请求         wx.request({           method: 'POST',           url: app.apiService.loginWxUserUrl,           data: {             code: res.code,             encrypted_data: encryptedData,             iv: iv           },           success: (res) => {           },           fail: (err) => {           }         });       }        }   }) }

请求模式，每次用户授权手机号码，都是另外调用login获取最新的code，然后传给后端解析

在开发环境用自己的账号测试授权经常会出现如下报错

有时候重新调用又可以

操作信息：

Traceback (most recent call last):

  File “./weixin/api/views.py”, line 622, in post

    account = self.get_account(request, login_info, access_token, code)

  File “./weixin/api/views.py”, line 557, in get_account

    crypt_info = self._wx_decrypt(session_key, encrypted_data, iv)  # 通过前端加密的数据获取到用户的手机号

  File “./weixin/api/views.py”, line 539, in _wx_decrypt

    return WXBizDataCrypt(appid, session_key).decrypt(encrypted_data, iv)

  File “./weixin/WXBizDataCrypt.py”, line 19, in decrypt

    decrypted = json.loads(self._unpad(cipher.decrypt(encryptedData)).decode())

UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0xa2 in position 2: invalid start byte