Mega Code Archive

 
Categories / Java Tutorial / Servlet
 

Redirect Servlet by Setting Response Location

import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; public class MyServlet extends HttpServlet {   Vector sites = new Vector();   Random random = new Random();   public void init() throws ServletException {     sites.addElement("http://www.rntsoft.com/Code/Java/CatalogJava.htm");     sites.addElement("http://www.rntsoft.com/Tutorial/Java/CatalogJava.htm");     sites.addElement("http://www.rntsoft.com/Article/Java/CatalogJava.htm");     sites.addElement("http://www.rntsoft.com/Product/Java/CatalogJava.htm");   }   public void doGet(HttpServletRequest req, HttpServletResponse res)                                throws ServletException, IOException {     res.setContentType("text/html");     PrintWriter out = res.getWriter();     int siteIndex = Math.abs(random.nextInt()) % sites.size();     String site = (String)sites.elementAt(siteIndex);     res.setStatus(res.SC_MOVED_TEMPORARILY);     res.setHeader("Location", site);   } } <?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>                   </servlet>          <servlet-mapping><servlet-name>MyServletName</servlet-name>         <url-pattern>/index.html</url-pattern>     </servlet-mapping> </web-app>