Servlet Response Send Redirect : Response « Servlet « Java Tutorial

1. Java Tutorial
2. Servlet
3. Response

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

public class MyServlet extends HttpServlet {
   
 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException {
        
       //redirect the user depending on the value of the 'go' param
        String destination = getInitParameter("go");
        String contextPath = request.getContextPath();
        
         if(destination == null || destination.equals(""))
            throw new ServletException(
             "Missing or invalid 'go' parameter in " +
               getClass().getName());
        
        if(destination.equals("weather"))
        //ensure URL rewriting
            response.sendRedirect(response.encodeRedirectURL(contextPath + "/weather") );
        
         if(destination.equals("maps"))
        //ensure URL rewriting
            response.sendRedirect(response.encodeRedirectURL(contextPath + "/maps") );
    }
}

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app>
    <servlet><servlet-name>MyServletName</servlet-name>
             <servlet-class>MyServlet</servlet-class>
        <init-param>
            <param-name>
                go
            </param-name>
            <param-value>
                weather
            </param-value>
        </init-param>
             
    </servlet>
    
    <servlet-mapping><servlet-name>MyServletName</servlet-name>
        <url-pattern>/index.html</url-pattern>
    </servlet-mapping>
</web-app>

25.13.Response
	25.13.1.	Servlet Response Send Redirect
	25.13.2.	Servlet Response Send Error
	25.13.3.	Servlet OutputStream
	25.13.4.	Get Servlet OutputStream from Servlet Response
	25.13.5.	HTTP Response