📄 sessionexample.java
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/* * Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. *//* $Id: SessionExample.java,v 1.3 2004/11/14 07:35:43 tcfujii Exp $ * */package samples.webapps.simple.servlet;import java.io.*;import java.text.*;import java.util.*;import javax.servlet.*;import javax.servlet.http.*;import samples.webapps.simple.util.HTMLFilter;/** * Example servlet showing request headers * * @author James Duncan Davidson <duncan@eng.sun.com> */public class SessionExample extends HttpServlet { ResourceBundle rb = ResourceBundle.getBundle("LocalStrings"); public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("<html>"); out.println("<body bgcolor=\"white\">"); out.println("<head>"); String title = rb.getString("sessions.title"); out.println("<title>" + title + "</title>"); out.println("</head>"); out.println("<body>"); // img stuff not req'd for source code html showing // relative links everywhere! // XXX // making these absolute till we work out the // addition of a PathInfo issue out.println("<a href=\"" + request.getContextPath() + "/servlets/sessions.html\">"); out.println("<img src=\"" + request.getContextPath() + "/images/code.gif\" height=24 " + "width=24 align=right border=0 alt=\"view code\"></a>"); out.println("<a href=\"" + request.getContextPath() + "/servlets/index.html\">"); out.println("<img src=\"" + request.getContextPath() + "/images/return.gif\" height=24 " + "width=24 align=right border=0 alt=\"return\"></a>"); out.println("<h3>" + title + "</h3>"); HttpSession session = request.getSession(); out.println(rb.getString("sessions.id") + " " + session.getId()); out.println("<br>"); out.println(rb.getString("sessions.created") + " "); out.println(new Date(session.getCreationTime()) + "<br>"); out.println(rb.getString("sessions.lastaccessed") + " "); out.println(new Date(session.getLastAccessedTime())); String dataName = request.getParameter("dataname"); String dataValue = request.getParameter("datavalue"); if (dataName != null && dataValue != null) { session.setAttribute(dataName, dataValue); } out.println("<P>"); out.println(rb.getString("sessions.data") + "<br>"); Enumeration names = session.getAttributeNames(); while (names.hasMoreElements()) { String name = (String) names.nextElement(); String value = session.getAttribute(name).toString(); out.println(HTMLFilter.filter(name) + " = " + HTMLFilter.filter(value) + "<br>"); } out.println("<P>"); out.print("<form action=\""); out.print(response.encodeURL("SessionExample")); out.print("\" "); out.println("method=POST>"); out.println(rb.getString("sessions.dataname")); out.println("<input type=text size=20 name=dataname>"); out.println("<br>"); out.println(rb.getString("sessions.datavalue")); out.println("<input type=text size=20 name=datavalue>"); out.println("<br>"); out.println("<input type=submit>"); out.println("</form>"); out.println("<P>GET based form:<br>"); out.print("<form action=\""); out.print(response.encodeURL("SessionExample")); out.print("\" "); out.println("method=GET>"); out.println(rb.getString("sessions.dataname")); out.println("<input type=text size=20 name=dataname>"); out.println("<br>"); out.println(rb.getString("sessions.datavalue")); out.println("<input type=text size=20 name=datavalue>"); out.println("<br>"); out.println("<input type=submit>"); out.println("</form>"); out.print("<p><a href=\""); out.print(response.encodeURL("SessionExample?dataname=foo&datavalue=bar")); out.println("\" >URL encoded </a>"); out.println("</body>"); out.println("</html>"); out.println("</body>"); out.println("</html>"); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { doGet(request, response); }}⌨️ 快捷键说明
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