我用的官方代码，但是一直获取不到unionid，代码如下：

// 登录

login: function(that) {

wx.login({

success: res => {

wx.request({

url: ‘https://api.weixin.qq.com/sns/jscode2session’,

data: {

appid: ‘（本程序）’,

secret: ‘（本程序）’,

js_code: res.code,

grant_type: ‘authorization_code’

},

success: function(response) {

wx.getUserInfo({

withCredentials: true,

success: re => {

that.globalData.userInfo = re.userInfo;

wx.request({

url: that.serverUrl + ‘login/EncryptedUnionId’,

data: {

encryptedData: re.encryptedData,

iv: re.iv,

sessionKey: response.data.session_key

},

header: {

‘content-type’: ‘application/json’

},

success: function® {

//把unionid存到本地

}

});

}

});

}

});

}

});

},