index.java

JSP中session的建立和使用

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

public class index extends HttpServlet{
		private Date LoginTime;
		private String str;
      	
  public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
      throws ServletException, IOException {
      	
    
    response.setContentType("text/html;charset=GB2312");
   
   
    HttpSession session=request.getSession(false);
    String value=(String)session.getAttribute("name");
	Date d=new Date();

    PrintWriter out = response.getWriter();
    
    if (session==null)
    	response.sendRedirect("http://localhost:8080/myweb/login.html");
    	
    else 
    {
    	out.println(value);
       	out.println(d);
    	
    }	   
   }
 }