If you obtain the openId for the WeChat subscription number (except for the user's message sending and focus)

If you obtain the openId for the subscription number, you can use the oau2authorization of the service number or the unionid mechanism to find the source code. If you obtain the openId for the subscription number, you can use the oau2authorization of the service number or the unionid mechanism to find the source code.

Reply content:

If you obtain the openId for the subscription number, you can use the oau2authorization of the service number or the unionid mechanism to find the source code.

Webpage authorization to obtain basic user information:
Https://mp.weixin.qq.com/wiki...

If you use the method described, you need to have a subscription number and a service number, and then bind the two accounts on the open platform.

You can directly obtain the openID through the service number, because the same user has the same subscription number and the openID in the service number.