sorry for my poor En,I want to know whether xmpp protocol support the video chat or voice chat,or any other way for me to embed into the jabber client.
Yes, there’‘s Jingle, however it’'s experimental and might change significantly in the future.
Currently, a project to integrate Jingle into Smack, Jivesoftware’'s Jabber client library, is close to be finished.
For other client libraries, Google provides libjingle on http://code.google.com/p/libjingle/.