HttpServletResponse: encodeURL(String url) : HttpServletResponse « javax.servlet.http « Java by API






  1. Java by API
  2. javax.servlet.http
  3. HttpServletResponse

HttpServletResponse: encodeURL(String url)

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Enumeration;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class SessionSnoop extends HttpServlet {

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

    HttpSession session = req.getSession();

    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>Session Count</TITLE></HEAD>");
    out.println("<BODY><H1>Session Count</H1>");

    out.println("You've visited this page " + count
        + ((count == 1) ? " time." : " times."));

    out.println("<P>");

    out.println("<H3>Here is your saved session data:</H3>");
    Enumeration e = session.getAttributeNames();
    while (e.hasMoreElements()) {
      String name = (String) e.nextElement();
      out.println(name + ": " + session.getAttribute(name) + "<BR>");
    }

    out.println("<H3>Here are some vital stats on your session:</H3>");
    out.println("Session id: " + session.getId() + " <I>(keep it secret)</I><BR>");
    out.println("New session: " + session.isNew() + "<BR>");
    out.println("Timeout: " + session.getMaxInactiveInterval());
    out.println("<I>(" + session.getMaxInactiveInterval() / 60 + " minutes)</I><BR>");
    out.println("Creation time: " + session.getCreationTime());
    out.println("<I>(" + new Date(session.getCreationTime()) + ")</I><BR>");
    out.println("Last access time: " + session.getLastAccessedTime());
    out.println("<I>(" + new Date(session.getLastAccessedTime()) + ")</I><BR>");

    out.println("Requested session ID from cookie: " + req.isRequestedSessionIdFromCookie()
        + "<BR>");
    out.println("Requested session ID from URL: " + req.isRequestedSessionIdFromURL() + "<BR>");
    out.println("Requested session ID valid: " + req.isRequestedSessionIdValid() + "<BR>");

    out.println("<H3>Test URL Rewriting</H3>");
    out.println("Click <A HREF=\"" + res.encodeURL(req.getRequestURI()) + "\">here</A>");
    out.println("to test that session tracking works via URL");
    out.println("rewriting even when cookies aren't supported.");

    out.println("</BODY></HTML>");
  }
}








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