<%
 RequestDispatcher rd = getServletContext().getRequestDispatcher("/test/test2.jsp"); 
 rd.forward(request, response); 
%>

<%
  response.sendRedirect("test2.jsp");
%>

<%
int stayTime=0;
String URL="test2.jsp";
String content=stayTime+";URL="+URL; 
response.setHeader("REFRESH",content);
%>

<%
 response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY); 
 String newLocation = "test2.jsp"; 
 response.setHeader("Location",newLocation); 
%>

<script type="text/javascript">
window.location.href="test2.jsp";
</script>

ServletContext sc = getServletContext(); 
RequestDispatcher rd = sc.getRequestDispatcher("/test/test2.jsp"); //定向的页面 
rd.forward(request, response);
public class ForwardServlet extends HttpServlet {
 public void doGet(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {
 String id = request.getParameter("id");
 response.setContentType("text/html; charset=gb2312"); 
 ServletContext sc = getServletContext(); 
 RequestDispatcher rd = sc.getRequestDispatcher("/test/test2.jsp"); //定向的页面 
 rd.forward(request, response); 
 }
 public void doPost(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {
 doGet(request, response);
 }
}

package com.yanek.test;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RedirectServlet extends HttpServlet {
 public void doGet(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {
 String id = request.getParameter("id");
 response.setContentType("text/html; charset=gb2312"); 
 response.sendRedirect("test/test2.jsp");
 }
 public void doPost(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {
 doGet(request, response);
 }
}