ServletForExecution


1   /*
2    * ServletForExecution.java
3    *
4    * Created on 15 ���� 2002 �., 16:05
5    */
6   
7   package execution;
8   
9   import java.io.*;
10  import java.net.*;
11  
12  import java.util.Enumeration  ;
13  import javax.servlet.*;
14  import javax.servlet.http.*;
15  
16  import java.io.OutputStreamWriter  ;
17  import java.io.BufferedWriter  ;
18  
19  /**
20   *
21   * @author  avm
22   * @version
23   */
24  public class ServletForExecution extends HttpServlet {
25     private static String   servletId = "cebde3e2-e8f1-4421-8a1c-df11dcc6e79a";
26      private static int port = 2468;
27      private static String   host = "localhost";
28      /** Initializes the servlet.
29       */
30      public void init(ServletConfig config) throws ServletException {
31          super.init(config);
32          
33      }
34      
35      /** Destroys the servlet.
36       */
37      public void destroy() {
38          
39      }
40      
41      /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
42       * @param request servlet request
43       * @param response servlet response
44       */
45      protected void processRequest(HttpServletRequest request, HttpServletResponse response)
46      throws ServletException, IOException {
47          String   header = null;
48          response.setContentType("text/html");
49          PrintWriter out = response.getWriter();
50          out.println("<html>");
51          out.println("<head>");
52          out.println("<title>Servlet Executed correctly</title>");
53          out.println("</head>");
54          out.println("<body>");
55          out.println("<center><H1>Servlet requested</H1></center>");
56          out.println("Headers:<BR>");   
57          for(Enumeration   e = request.getHeaderNames(); e.hasMoreElements() ;) {
58                 header = e.nextElement().toString();
59                 out.println(header + " = " + request.getHeader(header) + "<BR>");
60             }
61          out.println("<BR><HR><BR>Connection to test server status " + host + ":" + port + "<BR>");
62      try {
63          /*Send header to test server*/
64          String   hdr1 = "ID=" + servletId + "\n";
65          String   hdr2 = "UserAgent=" + request.getHeader("user-agent") + "\n";
66          Socket s = new Socket(host,port);
67          OutputStream os = s.getOutputStream();
68          BufferedWriter   bw = new BufferedWriter  (new OutputStreamWriter  (os));
69          bw.write(hdr1);
70          bw.write(hdr2);
71          bw.write("\n");
72          bw.close();
73          out.println("All OK");
74      }catch(Exception   e) {
75          out.println("Exception: " + e);
76          e.printStackTrace();
77      }
78      out.println("</body>");
79          out.println("</html>");
80          out.close();
81      }
82      
83      /** Handles the HTTP <code>GET</code> method.
84       * @param request servlet request
85       * @param response servlet response
86       */
87      protected void doGet(HttpServletRequest request, HttpServletResponse response)
88      throws ServletException, IOException {
89          processRequest(request, response);
90      }
91      
92      /** Handles the HTTP <code>POST</code> method.
93       * @param request servlet request
94       * @param response servlet response
95       */
96      protected void doPost(HttpServletRequest request, HttpServletResponse response)
97      throws ServletException, IOException {
98          processRequest(request, response);
99      }
100     
101     /** Returns a short description of the servlet.
102      */
103     public String   getServletInfo() {
104         return "Short description";
105     }
106     
107 }
108
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