How to handle multiple clients in JSP?

I'm implementing a game in JSP and Servlets. The game should support multiple players. It is obvious that each player ID is generated on the server side. But where do I store it on the client side, so I can retrieve it later (from within the servlet) when the client calls for the Servlet?开发者_JS百科

Sessions are handled automatically by the servlet framework, and you retrieve the session by calling request.getSession() in a servlet.

The session is available in different ways once you start using a framework once you outgrow servlets (this happens quickly) and is framework-dependent.

Depends on how long you want the client to remember the player ID.

1. During the session: The session is a good place
2. During his subsequent visists: A (permanent) cookie is a good place

Session: request.getSession()

Cookie: request.getCookies() and response.addCookie(cookie)

Session ids are usually stored in a cookie.

I'd be amazed if JSP doesn't have a session library that would take care of all that for you.