A Summary of the Ways to Realize Page Jump in jsp and servlet

This paper summarizes the ways to realize page jump in jsp and servlet with examples. Share it for your reference, as follows:

Assuming a jump from test1.jsp to test2.jsp is required

1. Jump in jsp:

1. Forward using the RequestDispatcher. forward method

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

2. response. sendRedirect redirection

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

3. Use the forward tag

<jsp:forward page="test2.jsp"/>

4. meta marker in html marker

<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. Send a redirect request using response. setHeader and response. setStatus

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

7. Use the javascript script

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

2. Jump in servlet:

Suppose you jump from servlet to test2.jsp

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 is helpful to everyone's JSP programming.