Step 1: Configure your dynamic web project,start with web.xml
Step 2: create your index.jsp which have jquery script as shown
Step 3: Create your LanguageServlet which got hit when you post the request.
Step 4: Look at response on your JSP.
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>CMIS_NEW</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>LanguageServlet</servlet-name> <servlet-class>com.cims.LanguageServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>LanguageServlet</servlet-name> <url-pattern>/LanguageServlet</url-pattern> </servlet-mapping> </web-app>
Step 2: create your index.jsp which have jquery script as shown
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>AJAX JQUERY EXAMPLE</title>
</head>
<body>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js">
</script>
<script type="text/javascript">
$(document).ready(function() {
$("#getLanguage").click(function(){
$countryName = document.getElementById("countryName").value;
$.post("LanguageServlet", {countryName:$countryName}, function(languageReturned) {
alert(languageReturned);
$("#language").html(languageReturned);
});
});
});
</script>
<form method="post">
Enter Country :
<input id="countryName" name="countryName" type="text" />
<input id="getLanguage" name="getLanguage" type="button" value="Get Language" />
</form>
<div id="language" class="outputTextArea"></div>
</body>
Step 3: Create your LanguageServlet which got hit when you post the request.
package com.cims;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LanguageServlet extends HttpServlet {
public void doPost(HttpServletRequest req,HttpServletResponse res)
throws ServletException,IOException{
PrintWriter out = res.getWriter();
res.setContentType("text/html");
String countryName = req.getParameter("countryName");
String languageReturned = "";
if(countryName.equals("india")){
languageReturned = "Hindi";
}else if(countryName.equalsIgnoreCase("USA")){
languageReturned = "English";
}else if(countryName.equalsIgnoreCase("france")){
languageReturned = "French";
}else
languageReturned = "Unknown";
out.println(languageReturned);
out.flush();
out.close();
}
}
Step 4: Look at response on your JSP.
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