Example: HTTP Request Header

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) +

"<BODY BGCOLOR=\"#FDF5E6\">\n" +

"<H1 ALIGN=CENTER>" + title + "</H1>\n" +

"<B>Request Method: </B>" + request.getMethod()

+ "<BR>\n" +

"<B>Request URI: </B>" + request.getRequestURI() + "<BR>\n" +

"<B>Request Protocol: </B>" + request.getProtocol() +

"<BR><BR>\n" +

"<TABLE BORDER=1 ALIGN=CENTER>\n" +

"<TR BGCOLOR=\"#FFAD00\">\n" +

"<TH>Header Name<TH>Header Value");

Enumeration headerNames = request.getHeaderNames();

while(headerNames.hasMoreElements()) {

String headerName = (String)headerNames.nextElement();

out.println("<TR><TD>" + headerName);

out.println(" <TD>" + request.getHeader(headerName));

}

out.println("</TABLE>\n</BODY></HTML>");

} // end doGet

public void doPost(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException

{ doGet(request, response);

}

} //end class def