Java Socket chat demo

I need to learn about socket recently, so I just ran a chat demo.

Basically, I copied someone else. I added an util class and optimized it.

If you have a swing interface, students and beginners can take it away.

Http://download.csdn.net/detail/sysmaid/3880649

Paste some code.

Server thread:

/*** Service Thread class ** @ author jinghui ** create by 1:38:10 */class serverthread extends thread {private Socket socket; Public serverthread (Socket socket) {This. socket = socket;} public void run () {try {objectinputstream OIS = new objectinputstream (socket. getinputstream (); While (true) {vector v = NULL; try {v = (vector) Ois. readobject ();} catch (exception e) {e. printstacktrace (); system. out. println ("====== = An error occurred while communicating with the client ====== ");} If (V! = NULL & v. size ()> 0) {for (INT I = 0; I <v. size (); I ++) {string info = (string) v. get (I); string key = ""; if (info. startswith (chatutil. msg_login) {key = info. substring (7); // obtain the user name map. put (Key, socket); // Add the client to the list ta_info.append (Key + "login... \ n "); set <string> set = map. keyset (); iterator <string> it = set. iterator (); While (it. hasnext () {// iterative map, send the login information string recivekey = it to all clients. next (); // indicates the key for receiving information, that is, the user name socket S = Map. get (recivekey); printwriter PW = new printwriter (S. getoutputstream (), true); PW. println (Info); PW. flush () ;}} else if (info. startswith (chatutil. msg_exit) {// exit key = info. substring (6); // get the keyois. close (); socket. close (); map. remove (key); set <string> set = map. keyset (); iterator <string> it = set. iterator (); While (it. hasnext () {string recivekey = it. next (); socket S = map. get (recivekey); printwriter pw = New printwriter (S. getoutputstream (), true); PW. println (Info); PW. flush ();} ta_info.append (Key + "exit... \ n "); return; // exit thread} else if (info. startswith (chatutil. msg_userlist) {// transmits the current online user list string userlist = ""; set <string> set = map. keyset (); iterator <string> it = set. iterator (); While (it. hasnext () {key = it. next (); userlist + = Key + "," ;}key = info. substring (10); iterator <string> it2 = set. iterator (); While (It2.hasnext () {string recivekey = it2.next (); If (key. equals (recivekey) {socket S = map. get (recivekey); printwriter PW = new printwriter (S. getoutputstream (), true); PW. println (chatutil. msg_userlist + userlist); PW. flush () ;}} else {// normal message forwarding string [] Infos = chatutil. formatinfos (Info); set <string> set = map. keyset (); iterator <string> it = set. iterator (); While (it. hasnext () {string recivekey = it. next (); If (Re Civekey. equals (Infos [1]) {// find the receiver socket S = map. get (recivekey); printwriter PW = new printwriter (S. getoutputstream (), true); PW. println (Info); // forward the original text, and the client processes PW. flush () ;}}// end else} // end for} // end if v} // end while} catch (exception e) {e. printstacktrace (); ta_info.append (socket + "Exit exception. \ N ") ;}}// end class serverthread

Client Interface:

/*** Constructor * initialization interface in constructor */Public chatclientframe () {super (); this. settitle ("Rabbit chat room client"); this. setbounds (100,100,385,288); Final jpanel = new jpanel (); this. getcontentpane (). add (panel, borderlayout. south); Final jlabel label = new jlabel (); label. settext ("enter chat content"); panel. add (Label); tf_send = new jtextfield (); tf_send.addactionlistener (New actionlistener () {public void actionreceivmed (actionevent arg0) {Send (); // call the sending method}); tf_send.setpreferredsize (new dimension (180, 25); panel. add (tf_send); // message sending region final jbutton button = new jbutton (); button. settext ("send"); button. addactionlistener (New actionlistener () {public void actionreceivmed (actionevent e) {send () ;}}); panel. add (button); // Add send button final jsplitpane splitpane = new jsplitpane (); splitpane. setdividerlocation (100); // the location of the separator bar this. getcontentpane (). add (split Pane, borderlayout. center); Final jscrollpane scrollpane = new jscrollpane (); splitpane. setrightcomponent (scrollpane); ta_info = new jtextarea (); ta_info.setfont (new font ("", Font. bold, 14); scrollpane. setviewportview (ta_info); // information display area // ------- Display User List start ------- final jscrollpane scrollpane1 = new jscrollpane (); userlist = new jlist (); userlist. setmodel (New defaultcomboboxmodel (New String [] {""}); scrol Lpane1.setviewportview (userlist); splitpane. setleftcomponent (scrollpane1); // ------- display the user list end ------- // ------- display the user logon start ------- final jpanel panel_1 = new jpanel (); Final jlabel label_1 = new jlabel (); label_1.settext ("User name:"); panel_1.add (label_1); tf_newuser = new jtextfield (); partition (new dimension (140, 25); panel_1.add (tf_newuser ); final jbutton button_1 = new jbutton (); button_1.s Ettext ("login"); button_1.addactionlistener (New actionlistener () {public void actionreceivmed (actionevent arg0) {// perform the login operation if (loginflag) {joptionpane. showconfirmdialog (null, "the current user has logged on"); return;} string username = tf_newuser.gettext (). trim (); vector <string> V = new vector <string> (); V. add (chatutil. fittingloginmsg (username); // send the logon information try {out. writeobject (V); // send out. flush ();} catch (exception e) {e. printstacktrace () ;} Tf_newuser.setenabled (false); // the user name cannot be changed to button_1.setvisible (false); // The logon button hides loginflag = true; getonlineuser (username ); // get online user list}); panel_1.add (button_1); Final jbutton button_2 = new jbutton (); button_2.settext ("return"); button_2.addactionlistener (New actionlistener () {public void actionreceivmed (actionevent arg0) {If (! Loginflag) {// joptionpane. showmessagedialog (null, "logged out or not logged in! "); Return;} string exituser = tf_newuser.gettext (). trim (); vector <string> V = new vector <string> (); V. add (chatutil. fittingexitmsg (exituser); // exit information try {out. writeobject (V); out. flush ();} catch (exception e) {e. printstacktrace ();} system. exit (0) ;}}); panel_1.add (button_2); this. getcontentpane (). add (panel_1, borderlayout. north); // ------- display the user logon end ------- // ------- System Tray start ------- if (systemtray. issupported () {URL url = chatclientframe. class. getresource (chatutil. logo_image); imageicon I _con = new imageicon (URL); image = I _con.getimage (); trayicon = new trayicon (image); trayicon. addmouselistener (New mouseadapter () {public void mouseclicked (mouseevent e) {If (E. getclickcount () = 2) {showframe (); // display interface }}); trayicon. settooltip ("Rabbit chat"); popupmenu = new popupmenu (); menuitem exitmenu = new menuitem ("quit"); exitmenu. addactionlistener (New actionlistener () {public void actionreceivmed (actionevent arg0) {string exituser = tf_newuser.gettext (). trim (); vector <string> V = new vector <string> (); V. add (chatutil. fittingexitmsg (exituser); // exit information try {out. writeobject (V); out. flush (); out. close (); socket. close ();} catch (exception e) {e. printstacktrace ();} system. exit (0) ;}}); popupmenu. add (exitmenu); trayicon. setpopupmenu (popupmenu); systemtray = systemtray. getsystemtray (); try {systemtray. add (trayicon);} catch (exception E1) {e1.printstacktrace () ;}// ------- System Tray end -------}