有人能指导我一个显示response.encodeURL()使用的简单示例（代码）吗？
我的所有搜索（google和stackoverflow）仅提供encodeURL()和encodeRedirectURL().
我正在寻找一些简单的代码，展示如何在链接中嵌入会话信息。
谢谢， 杰夫
答案 0 :(得分：2)
考虑一下这个：
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();
}
答案 1 :(得分：1)