package cwp.tags; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; /** Shows all the request headers sent on this request. *

* Taken from Core Web Programming Java 2 Edition * from Prentice Hall and Sun Microsystems Press, * http://www.corewebprogramming.com/. * May be freely used or adapted. */ 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(ServletUtilities.headWithTitle(title) + "\n" + "

" + title + "

\n" + "\n" + "\n" + "

Header Name	Header Value"+ "
Request Method: " + "	" + request.getMethod() + "
Request URI: " + "	" + request.getRequestURI() + "
Request Protocol: " + "	"+ request.getProtocol() ); Enumeration headerNames = request.getHeaderNames(); while(headerNames.hasMoreElements()) { String headerName = (String)headerNames.nextElement(); out.println("
" + headerName); out.println("	" + request.getHeader(headerName)); } out.println("

\n"); } /** Let the same servlet handle both GET and POST. */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }