用promise包装getUserInfo 获取不到数据
发布于 7 年前 作者 zhujun 1522 次浏览 来自 问答

Bug：

* 用promise包装getUserInfo 获取不到数据

* 复现  

 

Page({

wxLogin:()=> new Promise((next,error)=>{

      wx.login({
        success: res => next(res),
        fail: err => error(err)
      })
  }),
wxGetUserInfo: () => new Promise((next, error) => {
    wx.getUserInfo({
      success:res=>next(res),
      fail:err=>error(err)
    })
  }),
  /**
   * 生命周期函数--监听页面显示
   */
onShow: function () {
    this.wxLogin().then(data => {
      console.log(data)  //{errMsg: "login:ok", , code: "adkjdkjdsljdslkdjlkds"}
      this.wxGetUserInfo(info => console.log(info)) // empty
    })

  }

})

3 回复

看你的代码似乎没问题，是不是授权问题，有没有返回错误消息？

我的代码给你参考一下，是TypeScript 2 代码，编译成 ES5 后，测试运行正常：

class Login {
    private isLoginFail = false;
    private userInfo!: ILoginUserInfo;
 
    public getUserInfo(): ILoginUserInfo {
        return this.userInfo;
    }
 
    public login(skipOwnLogin: boolean) {
        return this.loginPromise(skipOwnLogin).then((v) => {
            if (skipOwnLogin) {
                return v;
            }
 
            const userInfo = (v as any);
            if (userInfo.isEmployee) {
                userInfo.name = "";
                userInfo.phone = "";
            }
            this.userInfo = userInfo;
            console.log("login success");
            console.log(userInfo);
            return userInfo;
        }).catch((e) => {
            console.error("login faile[save user info]", e);
            this.isLoginFail = true;
            Promise.reject(e);
        });
    }
 
    private async loginPromise(skipOwnLogin: boolean):
        Promise<WeApp.UserInfo | ILoginUserInfo> {
        try {
            // wechat login
            const wxLoginCodeRes = await new Promise<WeApp.LoginResult>((resolve, reject) => {
                wx.login({ success: resolve });
            });
            if (!wxLoginCodeRes.code) { throw new Error(`wx.login error:${wxLoginCodeRes.errMsg}`); }
 
            // wechat get userinfo
            const wxInfoRes = await new Promise<WeApp.UserInfo>((resolve, reject) => {
                wx.getUserInfo({
                    success: resolve,
                    withCredentials: true,
                });
            });
 
            if (skipOwnLogin) { return wxInfoRes; }
 
            // own server login
            const ownInfoRes = await (requestPromise({
                data: { code: wxLoginCodeRes.code, encryptedData: wxInfoRes.encryptedData, iv: wxInfoRes.iv },
                method: "POST",
                url: getRequestUrl("/wx/xcx"),
            }) as Promise<{ data: ILoginResponse; statusCode: number; headers: {} }>);
            if (ownInfoRes.statusCode !== 200) {
                 throw new Error(`ownServer.login error:http request status code is ${ownInfoRes.statusCode}`); }
            if (ownInfoRes.data.errCode) { throw new Error(`ownServer.login error:${ownInfoRes.data}`); }
 
            // TODO remove var
            const a = { ...wxInfoRes.userInfo, ...ownInfoRes.data };
            return a;
        } catch (e) {
            console.error(e);
            Promise.reject(e);
        }
        throw new Error("Programe Logic miss.");
    }
 
}

推荐我开源的  https://github.com/youngjuning/wxPromise ，支持小程序API promise化、ES7 async await 等函数、ES8 finally 、一揽子正则验证和一些解决方案函数。开发不易，喜欢的话给一个星星  

@的米 ，授权没问题，api没报错，也没有返回信息；

ps 我有一个客户。删除N遍 清除N遍授权，眼睁睁看着他点了允许授权，但是微信返回给我的是undefined；

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