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15 package com.acme;
16 import java.io.IOException;
17 import java.io.PrintWriter;
18 import java.util.Date;
19 import java.util.Enumeration;
20
21 import javax.servlet.ServletConfig;
22 import javax.servlet.ServletException;
23 import javax.servlet.http.Cookie;
24 import javax.servlet.http.HttpServlet;
25 import javax.servlet.http.HttpServletRequest;
26 import javax.servlet.http.HttpServletResponse;
27 import javax.servlet.http.HttpSession;
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34
35 public class CookieDump extends HttpServlet
36 {
37 int redirectCount=0;
38
39
40 public void init(ServletConfig config)
41 throws ServletException
42 {
43 super.init(config);
44 }
45
46
47 protected void handleForm(HttpServletRequest request,
48 HttpServletResponse response)
49 {
50 String action = request.getParameter("Action");
51 String name = request.getParameter("Name");
52 String value = request.getParameter("Value");
53 String age = request.getParameter("Age");
54
55 if (name!=null && name.length()>0)
56 {
57 Cookie cookie = new Cookie(name,value);
58 if (age!=null && age.length()>0)
59 cookie.setMaxAge(Integer.parseInt(age));
60 response.addCookie(cookie);
61 }
62 }
63
64
65 public void doPost(HttpServletRequest request,
66 HttpServletResponse response)
67 throws ServletException, IOException
68 {
69 handleForm(request,response);
70 String nextUrl = getURI(request)+"?R="+redirectCount++;
71 String encodedUrl=response.encodeRedirectURL(nextUrl);
72 response.sendRedirect(encodedUrl);
73 }
74
75
76 public void doGet(HttpServletRequest request,
77 HttpServletResponse response)
78 throws ServletException, IOException
79 {
80 handleForm(request,response);
81
82 response.setContentType("text/html");
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85 PrintWriter out = response.getWriter();
86 out.println("<h1>Cookie Dump Servlet:</h1>");
87
88 Cookie[] cookies = request.getCookies();
89
90 for (int i=0;cookies!=null && i<cookies.length;i++)
91 {
92 out.println("<b>"+cookies[i].getName()+"</b>="+cookies[i].getValue()+"<br/>");
93 }
94
95 out.println("<form action=\""+response.encodeURL(getURI(request))+"\" method=\"post\">");
96
97 out.println("<b>Name:</b><input type=\"text\" name=\"Name\" value=\"name\"/><br/>");
98 out.println("<b>Value:</b><input type=\"text\" name=\"Value\" value=\"value\"/><br/>");
99 out.println("<b>Max-Age:</b><input type=\"text\" name=\"Age\" value=\"60\"/><br/>");
100 out.println("<input type=\"submit\" name=\"Action\" value=\"Set\"/>");
101
102 }
103
104
105 public String getServletInfo() {
106 return "Session Dump Servlet";
107 }
108
109
110 private String getURI(HttpServletRequest request)
111 {
112 String uri=(String)request.getAttribute("javax.servlet.forward.request_uri");
113 if (uri==null)
114 uri=request.getRequestURI();
115 return uri;
116 }
117
118 }