encodeURL（）示例？

public void doGet (HttpServletRequest req, HttpServletResponse res) 
     throws ServletException, IOException { 

    // Get the session object. Create a new one if it doesn't exist. 
    HttpSession session = req.getSession(true); 

    res.setContentType("text/html"); 
    PrintWriter out = res.getWriter(); 

    out.println("<head><title> " + "SessionServlet Output " + 
       "</title></head><body>"); 
    out.println("<h1> SessionServlet Output </h1>"); 

    // Set up a session hit counter. "sessionservlet.counter" is just the 
    // conventional way to create a key for the value to be stored in the 
    // session object "dictionary". 
    Integer ival = 
     (Integer) session.getAttribute("sessionservlet.counter"); 
    if (ival == null) { 
     ival = new Integer(1); 
    } 
    else { 
     ival = new Integer(ival.intValue() + 1); 
    } 

    // Save the counter value. 
    session.setAttribute("sessionservlet.counter", ival); 

    // Report the counter value. 
    out.println(" You have hit this page <b>" + 
       ival + "</b> times.<p>"); 

    // This statement provides a target that the user can click 
    // to activate URL rewriting. It is not done by default. 
    out.println("Click <a href=" + 
       res.encodeURL(HttpUtils.getRequestURL(req).toString()) + 
       ">here</a>"); 
    out.println(" to ensure that session tracking is working even " + 
       "if cookies aren't supported.<br>"); 
    out.println("Note that by default URL rewriting is not enabled" + 
       " due to its large overhead."); 

    // Report data from request. 
    out.println("<h3>Request and Session Data</h3>"); 
    out.println("Session ID in Request: " + 
       req.getRequestedSessionId()); 
    out.println("<br>Session ID in Request is from a Cookie: " + 
       req.isRequestedSessionIdFromCookie()); 
    out.println("<br>Session ID in Request is from the URL: " + 
       req.isRequestedSessionIdFromURL()); 
    out.println("<br>Valid Session ID: " + 
       req.isRequestedSessionIdValid()); 

    // Report data from the session object. 
    out.println("<h3>Session Data</h3>"); 
    out.println("New Session: " + session.isNew()); 
    out.println("<br> Session ID: " + session.getId()); 
    out.println("<br> Creation Time: " + new Date(session.getCreationTime())); 
    out.println("<br>Last Accessed Time: " + 
       new Date(session.getLastAccessedTime())); 
    out.println("</body>"); 
    out.close(); 
    }

來源

2014-11-30 14:59:02

encodeURL（）示例？

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