<button open-type="getPhoneNumber" bind:getphonenumber="getPhoneNumber" class="loginbtn">用户登录</button>

getPhoneNumber(e) {
    const that = this;
    wx.getSetting({
      success: res => {
        if (res.authSetting['scope.userInfo']) {
          wx.getUserInfo({
            success: res => {
              const { encryptedData, rawData, signature, iv } = res;
              wx.login({
                success: res => {
                  if (res.code) {
                    const params = {
                      code: res.code,
                      appid: app.globalData.appid, encryptedData, rawData, signature, iv, phoneNumber: e.detail.code,
                    };
                     // 发起http请求
                  }
                },
                error: err => {
                  console.log('wx.login:err', err);
                }
              })
            }
          })
        }
      },
      error: err => {
        console.log('wx.getSetting:err', err);
      }
    })
  }