Tuesday, 6 May 2014

Servlets : Page Redirection


Click here to watch in Youtube : https://www.youtube.com/watch?v=a-urghpboqE

Click the below Image to Enlarge


PageRedirection Project Dir Structure



PageRedirectServlet.java
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class PageRedirectServlet extends HttpServlet
{

    private static final long serialVersionUID = 1L;

    public void init() throws ServletException
    {
        System.out.println("---------------------------");
        System.out.println(" Init method is called in "
                + this.getClass().getName());
        System.out.println("---------------------------");
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException
    {
        // Set response content type
        response.setContentType("text/html");

        // New location to be redirected
        String site = new String("http://www.google.com");

        response.setStatus(response.SC_MOVED_TEMPORARILY);
        response.setHeader("Location", site);
    }

    public void destroy()
    {
        System.out.println("---------------------------");
        System.out.println(" destroy method is called in "
                + this.getClass().getName());
        System.out.println("---------------------------");
    }
}

web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
metadata-complete="true" version="3.0">

  <display-name>PageRedirection</display-name>

  <description>
        This is a simple web application with a source code organization
        based on the recommendations of the Application Developer's Guide.
  </description>

  <servlet>
    <servlet-name>PageRedirect</servlet-name>
    <servlet-class>PageRedirectServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>PageRedirect</servlet-name>
    <url-pattern>/PageRedirect</url-pattern>
  </servlet-mapping>

</web-app>

index.html
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PageRedirectDemo</title>
</head>
<body>
    <li><a href="PageRedirect">PageRedirect</a></li>
</body>
</html>

Environment Used 

JDK version :1.6.0_30
Tomcat version : 7.0.50 

To Download PageAutoRefreshApp Project Click the below link

https://sites.google.com/site/javaee4321/servlets/PageAutoRefreshApp.zip?attredirects=0&d=1

See also:

  • Servlets Tutorial
  • All Design Patterns Links
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