In jsp and servlet, the following is an example of how to achieve page Jump: jspservlet

In jsp and servlet, the following is an example of how to achieve page Jump: jspservlet

This example summarizes the methods for page Jump in jsp and servlet. We will share this with you for your reference. The details are as follows:

Assume that you want to jump from test1.jsp to test2.jsp.

1. Jump in jsp:

1. Use the RequestDispatcher. forward Method for forwarding

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

2. response. sendRedirect redirection

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

3. Use the forward label
Copy codeThe Code is as follows: <jsp: forward page = "test2.jsp"/>

4. meta tag in html Tag
Copy codeThe Code is as follows: <meta http-equiv = "refresh" content = "0; url = test2.jsp">

5. Use response. setHeader

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

6. Use response. setHeader and response. setStatus to send redirect requests

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

7. Use javascript scripts

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

Ii. redirection in servlet:

Assume that you are redirected to test2.jsp from the servlet.

1. forward

ServletContext SC = getServletContext (); RequestDispatcher rd = SC. getRequestDispatcher ("/test/test2.jsp"); // directed page 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"); // directed page rd. forward (request, response);} public void doPost (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet (request, response );}}

2. sendRedirect

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); }}

I hope this article will help you with JSP program design.