struts,ajax et BD

merci
pour le code le voici
pour la page jsp:

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<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
 
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Engine Removal</title>
    <script type='text/javascript' src='/ZIRAM/dwr/interface/Removal.js'></script>
    <script type='text/javascript' src='/ZIRAM/dwr/engine.js'></script>
    <script type='text/javascript' src='/ZIRAM/dwr/util.js'></script>
 
<script type='text/javascript'>
<!--
 
function rafraichirListeValeursRegistry() {
Removal.getListeValeursRegistry($("listevaleursactype").value,remplirListeValeursRegistry);
}
function remplirListeValeursRegistry(data) {
DWRUtil.removeAllOptions("listevaleursvaleursregistry");
DWRUtil.addOptions("listevaleursregistry", data);
DWRUtil._selectListItem($("listevaleursregistry"),$("listevaleursregistry").options[0].value);
}
 
function rafraichirListeValeursPos() {
Removal.getListeValeursPos($("listevaleursregistry").value,remplirListeValeursPos);
}
function remplirListeValeursPos(data) {
DWRUtil.removeAllOptions("listevaleurspos");
DWRUtil.addOptions("listevaleurspos", data);
DWRUtil._selectListItem($("listevaleurspos"),$("listevaleurspos").options[0].value);
}
 
function majEngineRemoval() {
Removal.getEngineSN($("listevaleursregistry").value,$("listevaleurspos").value,afficherEngineSN);
Removal.getEngineTR(afficherEngineTR, $("Enginesn").value);
Removal.getEngineAC(afficherEngineAC, $("Enginesn").value);
Removal.getEnginePos(afficherEnginePos, $("Enginesn").value);
Removal.getEngineTAI(afficherEngineTAI, $("Enginesn").value);
Removal.getEngineCAI(afficherEngineCAI, $("Enginesn").value);
Removal.getEngineTSN(afficherEngineTSN, $("Enginesn").value);
Removal.getEngineCSN(afficherEngineCSN, $("Enginesn").value);
}
 
function afficherEngineSN(data) {
DWRUtil.setValue("EngineSN",data);
}
function afficherEngineTR(data) {
DWRUtil.setValue("TR",data);
}
function afficherEngineAC(data) {
DWRUtil.setValue("AC",data);
}
function afficherEnginePos(data) {
DWRUtil.setValue("Position",data);
}
function afficherEngineTAI(data) {
DWRUtil.setValue("TAI",data);
}
function afficherEngineCAI(data) {
DWRUtil.setValue("CAI",data);
}
function afficherEngineTSN(data) {
DWRUtil.setValue("AC",data);
}
function afficherEngineCSN(data) {
DWRUtil.setValue("Position",data);
}    
function init() {
DWRUtil.useLoadingMessage();
 
rafraichirListeValeursRegistry();
rafraichirListeValeursPos();
}
 
-->
</script>
 
<style type="text/css">
<!--
body {
    margin-left: 100px;
    margin-top: 30px;
    margin-right: 100px;
}
.Style1 {color: #007FFF}
.Style2 {
    font-size: 24px;
    font-style: italic;
    font-weight: bold;
    color: #000066;
}
.Style4 {font-size: 16px}
.Style5 {color: #000066}
.Style7 {
    font-size: 16px;
    font-weight: bold;
    font-style: italic;
}
-->
</style></head>
 
<body onload="init();">
 
<table width="906" height="824" border="1" align="center">
  <tr>
    <td width="230" height="128"><div align="center"><img src="Sans titre-2.png" width="230" height="170" /></div></td>
    <td width="410"><p align="center"><img src="Sans titre2.png" width="410" height="170" /></p>    </td>
    <td width="244"><img src="Sans titre1.png" width="244" height="170" /></td>
  </tr>
  <tr>
    <td height="617" valign="top" bgcolor="#FFFCEB">
    <div align="center" class="Style1"><img src="Sans titre.png" width="230" height="120" />
 
    <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="230" height="300">
      <param name="movie" value="xmlmenu.swf" />
      <param name="quality" value="high" />
      <embed src="xmlmenu.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="540" height="300"></embed>
      </object>
    <img src="Sans titre11.png" width="230" height="172" />    </div></td>
    <td height="617" colspan="2" align="center" valign="top"><div align="center" class="Style2">
 
      <p>Engine Removal </p>
      <html:form action="remove">
      <table width="648" border="0">
        <tr>
          <th width="216" scope="col"><div align="left"><span class="Style4">Aircraft Type:</span>
              <select id="listevaleursactype" name="listevaleursactype" size="1" onchange="rafraichirListeValeursRegistry();">
 
                             <logic:present name="actypeok">
                             <logic:iterate id="remform" name="actypeok">
                       <option value="<bean:write name="remform" property="actype"/>">
                                 <bean:write name="remform" property="actype"/> 
                         </option>
 
                              </logic:iterate>
                              </logic:present>   
 
               </select>
          </div></th>
          <th width="216" scope="col"><div align="left"><span class="Style4">Registry:</span>
              <select id="listevaleursregistry" name="listevaleursregistry" size="1" onchange="rafraichirListeValeursPos();">
                </select>
          </div></th>
          <th width="216" scope="col"><div align="left"><span class="Style4">Position:</span>
              <select id="listevaleurspos" name="listevaleurspos" size="1" >
                </select>
          </div></th>
        </tr>
      </table>
 
      <p><a href="javascript:majEngineRemoval();" ><img src="bouton1.png" width="110" height="20"/></a></p>
      <blockquote>
        <blockquote>
          <p align="left"></p>
        </blockquote>
      </blockquote>
      </div>
      <table width="653" border="0">
        <tr class="Style7">
        <td width="213" height="50"><div align="center" class="Style5">
          <div align="center">
            <p><span class="Style7">Engine SN</span></p>
            <p><em>
              <input name="Enginesn" type="text" id="Enginesn" size="20" readonly="true" />
 
            </em></p>
          </div>
        </div></td>
          <td width="213" height="50"><div align="center" class="Style5">
            <div align="center">
              <p><em>Trust R.</em></p>
              <p><em>
                <input name="TR" type="text" id="TR" size="20" readonly="true" />
                </em></p>
            </div>
          </div></td>
          <td width="213" height="50"><div align="center" class="Style5">
            <div align="center">
              <p><em>Aircraft</em></p>
              <p><em>
                <input name="AC" type="text" id="AC" size="20" readonly="true" />
                </em></p>
            </div>
          </div></td>
        </tr>
        <tr>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">Position</span></p>
            <p class="Style5"><em><em>
              <input name="Position" type="text" id="Position" size="20" />
              </em>
 
              </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">TAI</span></p>
            <p class="Style5"><em>
              <input name="TAI" type="text" id="TAI" size="20" readonly="true" />
 
              </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">CAI</span></p>
            <p class="Style5"><em><em></em>
              <input name="CAI" type="text" id="CAI" size="20" readonly="true" />
 
              </em></p>
          </div></td>
        </tr>
        <tr>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">TSN</span></p>
            <p class="Style5"><em>
              <input name="TSN" type="text" id="TSN" size="20" readonly="true" />
 
              </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">CSN</span></p>
            <p class="Style5"><em>
              <input name="CSN" type="text" id="CSN" size="20" readonly="true" />
            </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">DATE</span><em><em></em></em></p>
            <p class="Style5"><em>
              <input name="DATE" type="text" id="DATE" size="20" />
 
              </em></p>
          </div></td>
        </tr>
        <tr class="Style7">
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5">Rem Date</p>
            <p class="Style5"><em>
              <input name="Remdate" type="text" id="Remdate" size="20" />
 
                  </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5">Rem Reason</p>
            <p class="Style5"><em>
              <input name="Remreason" type="text" id="Remreason" size="20" />
 
              </em></p>
          </div></td>
          <td height="50"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5"><span class="Style7">Rem Class</span></p>
            <p class="Style5"><em>
              <input name="DATE" type="text" id="DATE" size="20" />
 
              </em></p>
          </div></td>
        </tr>
        <tr class="Style7">
          <td height="119"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5">Total Cycle </p>
            <p class="Style5"><em>
              <input name="TC" type="text" id="TC" size="20" />
            </em></p>
          </div></td>
          <td height="119"><div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5">Workscope Num </p>
            <p class="Style5"><em>
              <input name="workscope" type="text" id="worscope" size="20" />
            </em></p>
          </div></td>
          <td height="119"> <div align="center">
            <p class="Style5">&nbsp;</p>
            <p class="Style5">Total Time </p>
            <p class="Style5"><em>
              <input name="TT" type="text" id="TT" size="20" />
            </em></p>
          </div>            
            </td>
        </tr>
      </table>
      <p> <html:submit value="Valider" />
  </html:form>
      </p></td>
  </tr>
  <tr>
    <td height="23" colspan="3"><div align="right">
    <%= new java.util.Date().toString() %></div></td>
  </tr>
</table>
</body>
</html>

Class Java ou j'ai mis le traitement:

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package com.myapp.struts;
 
import java.sql.*;
import java.util.*;
 
public class Removal {
 
 
public ArrayList getListeValeursRegistry(String actype)
{
     java.sql.Statement etat;
        ResultSet rs=null;
        String sql;
        Connection conn;
                ArrayList regList=new ArrayList();
 
        sql="select REGSITRY from aircraft where AC_TYPE='"+actype+"'";
 
 
        try{        
           conn=ConnectionManager.getConnection();
            etat=conn.createStatement();
            rs=etat.executeQuery(sql);
 
            while (rs.next()) {
                regList.add(rs.getString("REGSITRY"));
            }
            rs.close();
 
        } catch ( SQLException e ) {
            System.err.println("SQL Exception occured while accessing the table" );
            e.printStackTrace();
            return null;
 
        } catch ( Exception e ) {
            e.printStackTrace();
            return null;
        }
 
        return regList;
 
}
 
public ArrayList getListeValeursPos(String acregistry)
{
    java.sql.Statement etat;
        ResultSet rs=null;
        String sql;
        Connection conn;
                ArrayList posList=new ArrayList();
 
        sql="select POSITION from engine where REGSITRY ='"+acregistry+"'";
 
 
        try{        
           conn=ConnectionManager.getConnection();
            etat=conn.createStatement();
            rs=etat.executeQuery(sql);
 
            while (rs.next()) {
                posList.add(rs.getString("POSITION"));
            }
            rs.close();
 
        } catch ( SQLException e ) {
            System.err.println("SQL Exception occured while accessing the table" );
            e.printStackTrace();
            return null;
 
        } catch ( Exception e ) {
            e.printStackTrace();
            return null;
        }
 
        return posList;
    }
 
 
public int getEngineSN(String acregistry,int pos)
{
    int resultat = 0;
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select SN from engine where REGSITRY ='"+acregistry+"' and POSITION="+pos+"";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("SN"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEngineTR(String enginesn)
{
    int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select TH_R_VALUE from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("TH_R_VALUE"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public String getEngineAC(String enginesn)
{
    String resultat=null ;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select REGSITRY from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getString("REGSITRY"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEnginePos(String enginesn)
{
     int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select POSITION from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("POSITION"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEngineTAI(String enginesn)
{
     int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select TAI from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("TAI"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEngineCAI(String enginesn)
{
     int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select CAI from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("CAI"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEngineTSN(String enginesn)
{
     int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select ENGINE_TSN from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("ENGINE_TSN"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
public int getEngineCSN(String enginesn)
{
     int resultat = 0;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select ENGINE_CSN from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getInt("ENGINE_CSN"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
 
public java.util.Date getRemDate(String enginesn)
{
     java.util.Date resultat = null;
    int sn=Integer.parseInt(enginesn);
    Statement sta=null;
    ResultSet rs=null;
 
    String sqlposition ="select DATE_INST from engine where SN ='"+sn+"'";
    try{
        Connection con=ConnectionManager.getConnection();
        sta=con.createStatement();
        rs=sta.executeQuery(sqlposition);
 
            resultat=(rs.getDate("DATE_INST"));
 
    }catch(Exception ex){
        System.out.println(ex);
    }
    System.out.println(sqlposition);
return resultat;    
}
}

fichier dwr.xml:

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<!DOCTYPE dwr PUBLIC
"-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN"
"http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
<allow>
    <create creator="new" javascript="Llp">
<param name="class" value="com.myapp.struts.Llp"/>
</create>
<create creator="new" javascript="Removal">
<param name="class" value="com.myapp.struts.Removal"/>
</create>
<create creator="new" javascript="Status">
<param name="class" value="com.myapp.struts.Status"/>
</create>
<create creator="new" javascript="Install">
<param name="class" value="com.myapp.struts.Install"/>
</create>
<convert converter="bean" match="com.myapp.struts.RemoveForm"/>
</allow>
</dwr>

merci bcp