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Editorial Team
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Asked: 2026-05-27T04:23:31+00:00

I am working on a simple messenger using JSF and PrimeFaces. I would like

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I am working on a simple messenger using JSF and PrimeFaces. I would like to have contact list in the right part of the window and multiple conversation dialogs in the second part. Dialog will contain just a send button, an input and conversation content.

Use case:

User #1 clicks on contact, chat dialog appears. User #2 is logging to system. System checks that he has 1 unread message so it opens chat dialog. User #2 clicks on another contact and second chat dialog appears.

Questions:

  1. How to pass some context to dialog like user-you-are-writing-to’s ID so when you click on send button in this particular dialog you will be able to access it?
  2. Is it possible to create a PrimeFaces dialog dynamically from JavaScript> Or maybe there is better solution to do it?
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1 Answer

  1. Editorial Team

    To create a chat application you have to use a Push Server (and WebSockets) which would be the best solution because you have to create a channel between the user/client and the server (since a simple request is stateless) – and that’s what push does. PrimeFaces Push uses a servlet as a dispatcher. This servlet should be in a different application than the JSF application and at the moment can only be deployed on jetty server.

    You could read about this in Primefaces UserGuide 3.0.M4: http://www.primefaces.org/documentation.html
    and see this implementation in showcase: http://www.primefaces.org/showcase-labs/push/chat.jsf

    Another implementation/example: http://java.dzone.com/articles/creating-websocket-chat

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