| Hongqing Liu | fd5ee81 | 2014-05-10 16:32:51 +0800 | [diff] [blame] | 1 | /*
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more
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| 3 | * contributor license agreements. See the NOTICE file distributed with
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| 4 | * this work for additional information regarding copyright ownership.
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0
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| 6 | * (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 |
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| 18 | import java.io.*;
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| 19 | import java.util.*;
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| 20 | import javax.servlet.*;
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| 21 | import javax.servlet.http.*;
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| 22 |
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| 23 | import util.HTMLFilter;
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| 24 |
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| 25 | /**
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| 26 | * Example servlet showing request headers
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| 27 | *
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| 28 | * @author James Duncan Davidson <duncan@eng.sun.com>
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| 29 | */
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| 30 |
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| 31 | public class SessionExample extends HttpServlet {
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| 32 |
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| 33 | ResourceBundle rb = ResourceBundle.getBundle("LocalStrings");
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| 34 |
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| 35 | public void doGet(HttpServletRequest request,
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| 36 | HttpServletResponse response)
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| 37 | throws IOException, ServletException
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| 38 | {
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| 39 | response.setContentType("text/html");
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| 40 |
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| 41 | PrintWriter out = response.getWriter();
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| 42 | out.println("<html>");
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| 43 | out.println("<head>");
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| 44 |
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| 45 | String title = rb.getString("sessions.title");
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| 46 | out.println("<title>" + title + "</title>");
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| 47 | out.println("</head>");
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| 48 | out.println("<body bgcolor=\"white\">");
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| 49 |
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| 50 | // img stuff not req'd for source code html showing
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| 51 | // relative links everywhere!
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| 52 |
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| 53 | // XXX
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| 54 | // making these absolute till we work out the
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| 55 | // addition of a PathInfo issue
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| 56 |
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| 57 | out.println("<a href=\"../sessions.html\">");
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| 58 | out.println("<img src=\"../images/code.gif\" height=24 " +
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| 59 | "width=24 align=right border=0 alt=\"view code\"></a>");
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| 60 | out.println("<a href=\"../index.html\">");
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| 61 | out.println("<img src=\"../images/return.gif\" height=24 " +
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| 62 | "width=24 align=right border=0 alt=\"return\"></a>");
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| 63 |
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| 64 | out.println("<h3>" + title + "</h3>");
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| 65 |
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| 66 | HttpSession session = request.getSession(true);
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| 67 | out.println(rb.getString("sessions.id") + " " + session.getId());
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| 68 | out.println("<br>");
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| 69 | out.println(rb.getString("sessions.created") + " ");
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| 70 | out.println(new Date(session.getCreationTime()) + "<br>");
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| 71 | out.println(rb.getString("sessions.lastaccessed") + " ");
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| 72 | out.println(new Date(session.getLastAccessedTime()));
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| 73 |
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| 74 | String dataName = request.getParameter("dataname");
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| 75 | String dataValue = request.getParameter("datavalue");
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| 76 | if (dataName != null && dataValue != null) {
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| 77 | session.setAttribute(dataName, dataValue);
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| 78 | }
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| 79 |
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| 80 | out.println("<P>");
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| 81 | out.println(rb.getString("sessions.data") + "<br>");
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| 82 | Enumeration names = session.getAttributeNames();
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| 83 | while (names.hasMoreElements()) {
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| 84 | String name = (String) names.nextElement();
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| 85 | String value = session.getAttribute(name).toString();
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| 86 | out.println(HTMLFilter.filter(name) + " = "
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| 87 | + HTMLFilter.filter(value) + "<br>");
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| 88 | }
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| 89 |
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| 90 | out.println("<P>");
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| 91 | out.print("<form action=\"");
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| 92 | out.print(response.encodeURL("SessionExample"));
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| 93 | out.print("\" ");
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| 94 | out.println("method=POST>");
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| 95 | out.println(rb.getString("sessions.dataname"));
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| 96 | out.println("<input type=text size=20 name=dataname>");
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| 97 | out.println("<br>");
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| 98 | out.println(rb.getString("sessions.datavalue"));
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| 99 | out.println("<input type=text size=20 name=datavalue>");
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| 100 | out.println("<br>");
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| 101 | out.println("<input type=submit>");
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| 102 | out.println("</form>");
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| 103 |
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| 104 | out.println("<P>GET based form:<br>");
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| 105 | out.print("<form action=\"");
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| 106 | out.print(response.encodeURL("SessionExample"));
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| 107 | out.print("\" ");
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| 108 | out.println("method=GET>");
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| 109 | out.println(rb.getString("sessions.dataname"));
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| 110 | out.println("<input type=text size=20 name=dataname>");
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| 111 | out.println("<br>");
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| 112 | out.println(rb.getString("sessions.datavalue"));
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| 113 | out.println("<input type=text size=20 name=datavalue>");
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| 114 | out.println("<br>");
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| 115 | out.println("<input type=submit>");
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| 116 | out.println("</form>");
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| 117 |
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| 118 | out.print("<p><a href=\"");
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| 119 | out.print(HTMLFilter.filter(response.encodeURL("SessionExample?dataname=foo&datavalue=bar")));
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| 120 | out.println("\" >URL encoded </a>");
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| 121 |
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| 122 | out.println("</body>");
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| 123 | out.println("</html>");
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| 124 | }
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| 125 |
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| 126 | public void doPost(HttpServletRequest request,
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| 127 | HttpServletResponse response)
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| 128 | throws IOException, ServletException
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| 129 | {
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| 130 | doGet(request, response);
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| 131 | }
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| 132 |
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| 133 | }
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