html - JSP shows wrong (old) values -


following problem:

i using servlet controller, jsb model , java beans information. here code:

html/jsp:

<table summary="diese tabelle zeigt informationen zum aktuellen spiel">                             <jsp:usebean id="game" class="model.spiel" scope="session"/>                             <tr><th id="leaderlabel" class="label">f&uuml;hrender</th><td id="leader" class="data"><%= game.getleader() %></td></tr>                             <tr><th id="roundlabel" class="label">runde</th><td id="round" class="data"><%= game.getround() %></td></tr>                             <tr><th id="timelabel" class="label">zeit</th><td id="time" class="data"><%= game.gettime() %></td></tr>                             <tr><th id="computerscorelabel" class="label">w&uuml;rfelergebnis <em>super c</em></th><td id="computerscore" class="data"><%= game.getcomputerscore() %></td></tr>                         </table>

html servlet call:

<a id="dice" href="gameservlet?action=wurfeln" tabindex="4">                             <img id="diceimage" src="img/wuerfel1.png" alt="w&uuml;rfel mit einer eins" />                         </a>

servlet:

if(action.equals("wurfeln")){             // right game session             spiel game;             httpsession session = request.getsession(true);             if(sessions.getgame(session)==null) {                 sessions.newsessions(session);                 game = sessions.getgame(session);             }             else {                 game = sessions.getgame(session);             }              // runt methods on game             game.setspielerscore(); //spieler würfelt             game.setcomputerscore(); //computer würfelt              // load new jsb             requestdispatcher dispatcher = getservletcontext().getrequestdispatcher("/table.jsp");             dispatcher.forward(request, response);         }

java bean: (game)

package model; import java.util.random;  public class spiel {     private int runde;     private string zeit;     private int spieler_feld;     private int spieler_wurfelergebnis;     private string spieler_name;     private int computer_feld;     private int computer_wurfelergebnis;     private string computer_name;     private random x;      public spiel() {         this.runde         = 1;         this.zeit          = "00:00";         this.spieler_feld  = 1;         this.computer_feld = 1;         this.spieler_name  = "super mario";         this.computer_name = "super c";         this.x             = new random();         this.spieler_wurfelergebnis  = 0;         this.computer_wurfelergebnis = 0;     }      public void setround(int round) {         this.runde = round;     }      public void settime(string time) {         this.zeit = time;     }      public string gettime() {         return this.zeit;     }      public int getround() {         return this.runde;     }      public void newround() {         this.runde += 1;     }      public string getleader() {         if(this.spieler_feld > this.computer_feld) {             return this.spieler_name;         }         else if(this.spieler_feld < this.computer_feld){             return this.computer_name;         }         else {             return "beide";         }     }      public void setspielerscore() {         //spieler würfelt         //this.spieler_wurfelergebnis = this.x.nextint(3)+1;         this.spieler_wurfelergebnis = 3;     }      public void setcomputerscore() {         //computer würfelt         //this.computer_wurfelergebnis = this.x.nextint(3)+1;         this.computer_wurfelergebnis = 2;     }      public int getspielerscore() {         return this.spieler_wurfelergebnis;     }      public int getcomputerscore() {         return this.computer_wurfelergebnis;     } }

java bean: (session)

package model;  import java.util.arraylist; import java.util.hashmap; import java.util.list; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import javax.servlet.http.httpsession;  public class sessions {     hashmap<httpsession, spiel> sessions = new hashmap<httpsession, spiel>();      public void newsessions(httpsession s) {         if(!sessions.containskey(s)) {             spiel newgame = new spiel();             sessions.put(s, newgame);         }     }      public spiel getgame(httpsession s) {         spiel spiel = sessions.get(s);         if (spiel != null) {             return spiel;         }         else {             return null;         }     } }

so problem experiencing new load of jsp in servlet (request dispatcher .... ) should show updated values in new jsp. since game.setspielerscore() changes variables, continues show values set constructer call.

i have 3 possible ideas why happens:

1) wrong in jsp code, possible doesnt gather values of right object.

2) wrong session javabeans, doesnt give right game session or something.

3) doesn`t update variables of game object correctly

the game attribute needs set in request.

if(action.equals("wurfeln")){             // right game session             spiel game;             httpsession session = request.getsession(true);             if(sessions.getgame(session)==null) {                 sessions.newsessions(session);                 game = sessions.getgame(session);             }             else {                 game = sessions.getgame(session);             }              // runt methods on game             game.setspielerscore(); //spieler würfelt             game.setcomputerscore(); //computer würfelt              request.setattribute("game", game);//set game in request.              // load new jsb             requestdispatcher dispatcher = getservletcontext().getrequestdispatcher("/table.jsp");             dispatcher.forward(request, response);         }

jsp

<jsp:usebean id="game" class="model.spiel" scope="request"/>

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