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ramyajayaraman
JSP,DB,SERVLET
1 Answer(s)      3 years and 8 months ago
Posted in : Java Beginners


hi thank you for your reply.With this code i can insert the data successfully into database but once i give submit button in insert.jsp it should be forwarded to ajax.jsp.In ajax.jsp once i give the name;;;age and city are not automatically fetched......can u help me??????

And can u send me the code for the same scenario using for populating data into database through servlet

Code u sent to me::

1)insert.jsp:

<%@page import="java.sql.*"%>

Name:
Age:
City:

<% String name=request.getParameter("name"); if(name!=null){ int age=Integer.parseInt(request.getParameter("age")); String city=request.getParameter("city"); Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con = DriverManager.getConnection("jdbc:odbc:student"); Statement st=con.createStatement(); int i=st.executeUpdate("insert into data(name,age, city) values('"+name+"',"+age+",'"+city+"')"); out.println("Data is inserted successfully"); } %>

2)ajax.jsp:

<%@ page import="java.sql.*" %>



Name:
Age:
City:
Phone No:


continue........

3)AjaxServlet.java:

import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*;

public class AjaxServlet extends HttpServlet { public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException { res.setContentType("text/html"); PrintWriter out = res.getWriter(); String name = req.getParameter("name").toString(); System.out.println(name); String data =""; try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con = DriverManager.getConnection("jdbc:odbc:student"); Statement st=con.createStatement(); ResultSet rs=st.executeQuery("select * from data where name='"+name+"'"); while(rs.next()) { data =":"+Integer.toString(rs.getInt("age")) + ":" + rs.getString("city"); }

out.println(data); System.out.println(data); } catch (Exception e) { System.out.println(e); } } }


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View Answers

December 10, 2010 at 4:44 PM


Hi Friend,

We have modified the code of insert.jsp and ajax.jsp.

1)insert.jsp:

<%@page import="java.sql.*"%>
<html>
<form method="post" action="ajax.jsp">
<table>
<tr><td>Name:</td><td><input type="text" name="name"></td></tr>
<tr><td>Age:</td><td><input type="text" name="age"></td></tr>
<tr><td>City:</td><td><input type="text" name="city"></td></tr>
<tr><td></td><td><input type="submit" value="Submit"></td></tr>
</table>
</form>
</html>

2)ajax.jsp:

<%@ page import="java.sql.*" %>
<%
String name=request.getParameter("name");
if(name!=null){
int age=Integer.parseInt(request.getParameter("age"));
String city=request.getParameter("city");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
           Connection con = DriverManager.getConnection("jdbc:odbc:student");
           Statement st=con.createStatement();
           int i=st.executeUpdate("insert into data(name,age, city) values('"+name+"',"+age+",'"+city+"')");
         con.close();
          }

%>
<html>
<head>
<script type="text/javascript">
function showData(value){ 
xmlHttp=GetXmlHttpObject()
var url="../AjaxServlet"
url=url+"?name="+value
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("age").value= strar[1];
    document.getElementById("city").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 border="0" width="400px" align="center" bgcolor="#CDFFFF">
<div id="mydiv"></div>
   <tr><td><b>Name:</b></td><td> 
 <input  type="text" name="name" id="name" onkeyup="showData(this.value);"></td></tr>
<tr><td ><b>Age:</b></td><td>
<input  type="text" name="age" id="age" ></td></tr>
<tr><td><b>City:</b></td><td>
<input  type="text" name="city" id="city" ></td></tr>
<tr><td><b>Phone No:</b></td><td>
<input  type="text" name="phoneno" id="phoneno"></td></tr>

</table>
</form>    
<table border="0" width="100%" align="center">
<br>
<br>
</table>
</body>
</html>

The code of AjaxServlet.java remain same.

Thanks



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