This is my HTML File:
<html>
<head>
<script type="text/javascript">
function validateCatalogId(){
var req=init();
function init(){
if (window.XMLHttpRequest) {
return new XMLHttpRequest();
} else if (window.ActiveXObject) {
return new ActiveXObject("Microsoft.XMLHTTP");
}
}
var catalogId=document.getElementById("catalogId");
req.open("POST", "validateForm", true);
req.onreadystatechange=processRequest;
req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
req.send("catalogId="+ encodeURIComponent(catalogId.value));
function processRequest(){
if(req.readyState==4){
if(req.status==200){
processResponse();
}
}
}
function processResponse(){
var xmlMessage=req.responseXML;
}
}
</script>
</head>
<body>
<h1>Form for Catalog Entry</h1>
<form name="validationForm" action="validateForm" method="post">
<div id="catalogId" name="catalogId"> </div>
<table>
<tr><td>Journal:</td><td><input type="text"
size="20"
id="journal"
name="journal"></td>
</tr>
<tr><td>Publisher:</td><td><input type="text"
size="20"
id="publisher"
name="publisher"></td>
</tr>
<tr><td><input type="button" onclick="validateCatalogId();"
value="Create Catalog"
id="submitForm"
name="submitForm"></td>
</tr>
</table>
</form>
</body>
</html>And this is my servlet:
import java.io.*;
import java.sql.*;
import javax.naming.InitialContext;
import javax.servlet.*;
import javax.servlet.http.*;
public class FormServlet extends HttpServlet {
private String catalogId =null;
private String journal=null;
private String publisher= null;
public void setCatalogId(String catalogId)
{
this.catalogId= catalogId;
}
public String getCatalogId()
{
return catalogId;
}
public void setJournal(String journal)
{
this.journal= journal;
}
public String getJournal()
{
return journal;
}
public void setPublisher(String publisher)
{
this.publisher= publisher;
}
public String getPublisher()
{
return publisher;
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Obtain value of Catalog Id field to ve validated.
String catalogId = request.getParameter("catalogId");
String journal = request.getParameter("journal");
String publisher = request.getParameter("publisher");
// set headers before accessing the Writer
response.setContentType("text/xml");
response.setHeader("Cache-Control", "no-cache");
PrintWriter out = response.getWriter();
if(request.getParameter("catalogId") != null)
{
setCatalogId(request.getParameter("catalogId"));
}
else {
setCatalogId(" ");
}
if(request.getParameter("journal") != null)
{
setJournal(request.getParameter("journal"));
}
else {
setJournal(" ");
}
if(request.getParameter("publisher") != null) {
setPublisher(request.getParameter("publisher"));
}
else {
setPublisher(" ");
}
// then write the response
// If result set is empty set valid element to true
response.getWriter().write("<catalog>" + "<catalogId>+getCatalogId()+</catalogId>" + "<journal>+getJournal()+</journal>" + "<publisher>+getPublisher()+</publisher>" + "</catalog>");
}
}Without getter and setter methods the code is working fine..Can anyone find and solve the issue?
Expecting your Reply
Dave.
