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jagadeesh
list boxs
1 Answer(s)      3 years and a month ago
Posted in : JSP-Servlet


i have two list boxes first list box values from database and i want to assign selected options to the second list box using jsp is it possible to do this in jsp?


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March 29, 2011 at 12:05 PM


1)select.jsp:

<%@page import="java.sql.*"%>
<html>
     <head>
     <script type="text/javascript">
     var xmlHttp;
function showState(str){
if (typeof XMLHttpRequest != "undefined"){
xmlHttp= new XMLHttpRequest();
}
else if (window.ActiveXObject){
xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlHttp==null){
alert ("Browser does not support XMLHTTP Request")
return
} 
     var url="select2.jsp"
     url=url+"?fooditem="+str
     xmlHttp.onreadystatechange=stateChanged 
     xmlHttp.open("GET",url,true)
     xmlHttp.send(null)
     }

     function stateChanged(){ 

     if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") { 
    document.getElementById("item").innerHTML=xmlHttp.responseText 
     }
     } 


     function GetXmlHttpObject(){
     var xmlHttp=null;
     try{
     xmlHttp=new XMLHttpRequest();
     }
     catch (e) {
     try {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
     catch (e)  {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
     }
     }
     return xmlHttp;
     }
   </script>
   </head>
   <body>
   <form name="employee">
   <br><br>
     <b>Select Food Item</b>
      <select name="name" onchange="showState(this.value);">
           <option value="-1">Select</option> 
      <%
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("select * from items");
while(rs.next()){
    %>
   <option value="<%=rs.getString("item")%>"><%=rs.getString("item")%></option>
   <%
}
    %>
   </select>
   <div id='item'>
<b>Select Item&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp</b>  
<select name='item' >
<option value='-1'></option>
</select>
</div> 
   </form>    
   </body>
   </html>

2)select2.jsp:

<%@page language="java" import ="java.sql.*" %>
<%
String fi=request.getParameter("fooditem");
String buffer="<b>Select Item&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp</b>  <select>";
buffer=buffer+"<option value='"+fi+"'>"+fi+"</option>";

buffer=buffer+"</select>";
response.getWriter().println(buffer);
%>


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