Thursday, April 23, 2009

AJAX Using DOJO Tutorial

It is very simple to develope Ajax application with DOJO. There is no any need to use
ActiveXObject or XMLHttpRequest. Here I am going to show a very simple application.

1. Create one dynamic web project using your Eclipse IDE. (Say Project Name : Ajax_Dojo)
2. Write one servlet in that project (Say
3. Write one jsp page inside WebContent (Say example1.jsp)
4. Copy dojo.js inside WebContent
5. Add any server like Apache or Jboss to your project
6. Run the application http://localhost:8080/Ajax_Dojo/example1.jsp

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class AdmissionEnquiry extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
static final long serialVersionUID = 1L;
public AdmissionEnquiry() {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String roll = request.getParameter("roll");
System.out.println("Entered Roll Number :: "+roll);
PrintWriter out = response.getWriter();
out.print("Binod Suman");
else if(roll.equalsIgnoreCase("120")){
out.print("Pramod Kumar");
out.print("Roll Number not found");
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {


<html><body onLoad="onLoad();"
<title>Ajax Dojo Example</title>
<script language="javascript" src="dojo.js"></script>
<script language="javascript">
function onLoad() {
var buttonObj = document.getElementById("myButton");
dojo.event.connect(buttonObj, "onclick", this, "onclick_myButton");
function onclick_myButton() {
var url2 = "http://localhost:8080/Ajax_Dojo/AdmissionEnquiry";
var bindArgs = {
url: url2,
error: function(type, data, evt){
alert(data); },
load: function(type, data, evt){
alert(data); },
mimetype: "text/plain",
formNode: document.getElementById("myForm") };; }

<form id="myForm">
<h1>Find Student Name</h1>
<p> Enter Roll Number <input type="text" name="roll">
<input type="button" id="myButton" value="Submit"/>

During run the application, you will give roll number as input and you will get student Name.
Very simple ................ :)
Please give your comment to enhance this tutorial. ............ :)


  1. I feel very happy after read your blog.
    sir, Java is very interesting subject.
    and I like your blogs so much.

  2. Hi Binod,

    Jugnu here i m a web designer having 6 year exp now i want to learn dojo, since i don’t have much knowledge of programming language but ... I know copy /cut paste.

    Let me know how easy it to learn dojo form me?

    Jugnu Sharma

  3. Hello Binod,

    I saw your progam. I am doing a program on dojo to read contents of XML file and display in table format. could you please help me with the coding. I am not able to follow it easily as I am new to it. I need to try this even with the CSV and JSON files.


  4. hiik nice blog but sir i need in that when certain action is perform on a jsp page i am sending the request to controller using Jquery but nw i am new to dojo i want to send the data through using Dojo functionality will i give me a example of such.


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