/** *****************************************************************
showRequestHeaders.java SWE 642 servlet example
Modification of Ajoy Singh's example
@author Ajoy Singh & Jeff Offutt
@version 1.0 (2/27/02)
********************************************************************* */
// Import Java Libraries
import java.io.*;
import java.util.*;
//Import Servlet Libraries
import javax.servlet.*;
import javax.servlet.http.*;
// showRequestHeaders class
// CONSTRUCTOR: no constructor specified (default)
//
// *************** PUBLIC OPERATIONS **********************************
// void doGet () --> prints an HTML table with information from
// the header part of the request object
//***********************************************************************
public class showRequestHeaders extends HttpServlet
{
public void doGet (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType ("text/html");
PrintWriter out = response.getWriter();
String title = "Servlet Example: Showing Request Headers";
out.println ("\n\n ");
out.println (title);
out.println (" \n");
out.println ("");
out.println ("");
out.println (title);
out.println ("
");
out.println ("Request Method: ");
out.println (request.getMethod());
out.println ("
");
out.println ("Request URI: ");
out.println (request.getRequestURI());
out.println ("
");
out.println ("Request Protocol: ");
out.println (request.getProtocol());
out.println ("
");
out.println ("Request User Agent: ");
out.println (request.getHeader ("USER-AGENT"));
out.println ("
");
out.println ("All headers are as follows:");
out.println ("
");
out.println (" ");
out.println (" | Header Name | Header Value");
Enumeration headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements())
{
String headerName = (String) headerNames.nextElement();
out.println (" |
| " + headerName);
out.println (" | " + request.getHeader (headerName));
}
out.println (" |
");
out.println ("\nby: Ajoy Singh");
out.println ("\n");
} // End doGet
} // End showRequestHeaders