The WeChat applet user refuses to authorize and re-authorizes

using the micro-tool's small program framework. When the user enters the applet for the first time, clicks the authorization button, and then clicks the rejection. Even if the user clicks again, it cannot return normally. User information, how to re-acquire user information? When the user clicks the rejection, causing wxInfo to be empty, the userInfo in the cache is cleared, and then the user is prompted to click the authorization button again to obtain the user information again.

      If (res.wxInfo) {
          Key: 'userInfo',
            App.util.message('Click on the middle pattern and allow authorization', '',"error");
Title title WeChat scan code, experience more development cases