1. Install the WeChat plug-in
2. Configure the official account appid and AppSecret (view in the background of the official account)
The token can be defined casually, aes_key is the EncodingAESKey in the WeChat public account configuration
The callback address must be your domain name + /addons/wechat/index/callback
3. Official account configuration The configuration url must be your domain name + /addons/wechat/index/api
