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explicitly making any user logout from the site

sachin yadav
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I am using spring security for maintaining user authentication and authorization. We have different roles for our site. Now a admin can see all the logged in users and can logout any user from admin page.

I have an approach to make a custom filter and put it in the filter chain process of spring security. This filter will put the userId and sessionId of the user(after sucessful login), to a hashmap. A admin can iterate and see all the logged in users by iterating to that hash map.

Now when he clicks on logout button, how do i invalidate the session for that particular users. I can get sessionId based on a userId from hashmap, but i have no idea what to do with this session as i have no method like


Can someone please help me with any idea?
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