package coreservlets; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; /** Creates a table showing the current value of each * of the standard CGI variables. *

* Taken from Core Servlets and JavaServer Pages * from Prentice Hall and Sun Microsystems Press, * http://www.coreservlets.com/. * © 2000 Marty Hall; may be freely used or adapted. */ public class ShowCGIVariables extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String[][] variables = { { "AUTH_TYPE", request.getAuthType() }, { "CONTENT_LENGTH", String.valueOf(request.getContentLength()) }, { "CONTENT_TYPE", request.getContentType() }, { "DOCUMENT_ROOT", getServletContext().getRealPath("/") }, { "PATH_INFO", request.getPathInfo() }, { "PATH_TRANSLATED", request.getPathTranslated() }, { "QUERY_STRING", request.getQueryString() }, { "REMOTE_ADDR", request.getRemoteAddr() }, { "REMOTE_HOST", request.getRemoteHost() }, { "REMOTE_USER", request.getRemoteUser() }, { "REQUEST_METHOD", request.getMethod() }, { "SCRIPT_NAME", request.getServletPath() }, { "SERVER_NAME", request.getServerName() }, { "SERVER_PORT", String.valueOf(request.getServerPort()) }, { "SERVER_PROTOCOL", request.getProtocol() }, { "SERVER_SOFTWARE", getServletContext().getServerInfo() } }; String title = "Servlet Example: Showing CGI Variables"; out.println(ServletUtilities.headWithTitle(title) + "" + "

" + title + "

" + "" + "" + "

CGI Variable Name	Value"); for(int i=0; i	" + varName + "	" + varValue); } out.println("

"); } /** POST and GET requests handled identically. */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }