Get the current user's OpenID by clicking on the shared link

I have a subscription number, fan A shares a link, when B Click on this sharing link, can I get the OpenID of B?
I see the "Micro community" of the subscription number advanced interface, yes, but I don't know how to do it?
For example, the "gossip" subscription number, which is accessed through a link that is shared by a friend circle, will automatically get your personal information.

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I have a subscription number, fan A shares a link, when B Click on this sharing link, can I get the OpenID of B?
I see the "Micro community" of the subscription number advanced interface, yes, but I don't know how to do it?
For example, the "gossip" subscription number, which is accessed through a link that is shared by a friend circle, will automatically get your personal information.

Should be able, you say is the fan, then is the attention public number situation, uses the JS Weixinapi to share to know the user to share the success not, when he shares the success, uses the advanced interface inside one "the OAuth2.0 page authorizes" the function to obtain the user's information, asks to adopt

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