sessiontracker.java

来自「beginJsp2.0外文书籍源代码」· Java 代码 · 共 46 行

JAVA

46 行

package com.wrox.servlets;

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

public class SessionTracker extends HttpServlet 
{
  public void doGet(HttpServletRequest req, HttpServletResponse res)
              throws ServletException, IOException 
  {
    res.setContentType("text/html");
    PrintWriter out = res.getWriter();

    HttpSession session = req.getSession(true);

    Integer count = (Integer) session.getAttribute("count");

    if (count == null) 
    {
      count = new Integer(1);
    }
    else 
    {
      count = new Integer(count.intValue() + 1);
    }

    session.setAttribute("count", count);

    out.println("<html><head><title>SessionSnoop</title></head>");
    out.println("<body><h1>Session Details</h1>");
    out.println("You've visited this page " + count + ((count.intValue()
                 == 1) ? " time." : " times.") + "<br/>");
    out.println("<h3>Details of this session:</h3>");
    out.println("Session id: " + session.getId() + "<br/>");
    out.println("New session: " + session.isNew() + "<br/>");
    out.println("Timeout: " + session.getMaxInactiveInterval() + "<br/>");
    out.println("Creation time: " + new Date(session.getCreationTime())
                + "<br/>");
    out.println("Last access time: "
                + new Date(session.getLastAccessedTime()) + "<br/>");
    out.println("</body></html>");
  }
}

sessiontracker.java - 源码说明

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