wx.getUserInfo 获取的微信昵称为空 openid为:obZSn5Dh9hRLKqYxI4HenkjJaS3g
有遇到过,推测是用户频繁更改名称导致的
https://developers.weixin.qq.com/community/develop/doc/000cacfa20ce88df04cb468bc52801?blockType=1