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Akhilesh Chafale
Select from select list + display
1 Answer(s)      3 years and 6 months ago
Posted in : Struts


i have a select list containing elements, say EmpCode. there are 2 fields below it EmpName and DeptName.

As i select EmpCode from the select list, the corresponding EmpName and DeptName should be displayed automatically in empty text fields.

I am using struts 1.2 framework for the application.

Kindly reply asap.

Thanks & regards.


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View Answers

April 18, 2011 at 3:55 PM


1)ajax.jsp:

<%@page import="java.sql.*"%>
<html>
<head>
<script type="text/javascript">
function showData(id){ 

xmlHttp=GetXmlHttpObject()
var url="getdata.jsp";
url=url+"?id="+id;
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}
function stateChanged(){ 
if(xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
    var showdata = xmlHttp.responseText; 
    var strar = showdata.split(":");
    document.getElementById("name").value= strar[1];
    document.getElementById("dept").value= strar[2];
} 
}
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>
<table >
<div id="mydiv"></div>
<tr><td><b>Select:</b></td><td><select onchange="showData(this.value);">
   <%
   Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from emp ");
           while(rs.next()){
               %>
               <option value="<%=rs.getInt("EMP_NO")%>"><%=rs.getInt("EMP_NO")%></option>
               <%
           }
               %>
               </select></td></tr>

<tr><td><b>EMP Name:</b></td><td><input  type="text" id="name" ></td></tr>
<tr><td ><b>DEPT Name:</b></td><td><input  type="text" id="dept" ></td></tr>
</table>
</form>    
</body>
</html>

2)getdata.jsp:

<%@ page import="java.sql.*" %> 
<%
int id = Integer.parseInt(request.getParameter("id"));
String data ="";
try{
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from emp where EMP_NO="+id+"");
while(rs.next())
{
data =":"+rs.getString("EMP_NAME")+":"+rs.getString("DEPT_NAME");
}
out.println(data);
System.out.println(data);
}
catch (Exception e) {
System.out.println(e);
}
%>

Struts2 Ajax



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