Can Swagger have different security for different tags? I can't find the setting for tag's security in the Swagger Specification.
I hope the same tag will own the same security, and different tags will own different security.
I know paths can set their own security, but it's a little inconvenient.
No.
security can be set either globally or in individual operations (GET/POST/etc.), with the operation-level security overriding the global security.
Refer to the specification to see what is supported and what's not:
https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md