PrintCGI.java Source code

Introduction

Here is the source code for PrintCGI.java
Source

    //*
    *<servlet>*<servlet-name>PrintCGI</servlet-name>*<servlet-class>PrintCGI*</servlet-class>*</servlet>**<servlet-mapping>*<servlet-name>PrintCGI</servlet-name>*<url-pattern>/PrintCGI</url-pattern>*</servlet-mapping>*/

    import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

    public class PrintCGI extends HttpServlet {

        /**
         * doGet implementation, calls printCGIValues
         * 
         * @param request
         * @param response
         * @throws IOException
         */

        public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
            printCGIValues(request, response);
        }

        /**
         * doPost implementation, calls printCGIValues
         * 
         * @param request
         * @param response
         * @throws IOException
         */

        public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
            printCGIValues(request, response);
        }

        /**
         * Prints CGI Environment Variables in a table
         * 
         * @param request
         * @param response
         * @throws IOException
         */

        public void printCGIValues(HttpServletRequest request, HttpServletResponse response) throws IOException {
            String headers = null;
            String htmlHeader = "<HTML><HEAD><TITLE> CGI Environment Variables </TITLE></HEAD><BODY>";
            String htmlFooter = "</BODY></HTML>";

            response.setContentType("text/html");

            PrintWriter out = response.getWriter();

            out.println(htmlHeader);
            out.println("<TABLE ALIGN=CENTER BORDER=1>");
            out.println("<tr><th> CGI Variable </th><th> Value </th>");

            out.println("<tr><td align=center>Authentication Type</td>");
            out.println("<td align=center>" + request.getAuthType() + "</td></tr>");

            out.println("<tr><td align=center>Content Type</td>");
            out.println("<td align=center>" + request.getContentType() + "</td></tr>");

            out.println("<tr><td align=center>Content Type Length</td>");
            out.println("<td align=center>" + request.getContentLength() + "</td></tr>");

            out.println("<tr><td align=center>Query String</td>");
            out.println("<td align=center>" + request.getMethod() + "</td></tr>");

            out.println("<tr><td align=center>IP Address</td>");
            out.println("<td align=center>" + request.getRemoteAddr() + "</td></tr>");

            out.println("<tr><td align=center>Host Name</td>");
            out.println("<td align=center>" + request.getRemoteHost() + "</td></tr>");

            out.println("<tr><td align=center>Request URL</td>");
            out.println("<td align=center>" + request.getRequestURI() + "</td></tr>");

            out.println("<tr><td align=center>Servlet Path</td>");
            out.println("<td align=center>" + request.getServletPath() + "</td></tr>");

            out.println("<tr><td align=center>Server's Name</td>");
            out.println("<td align=center>" + request.getServerName() + "</td></tr>");

            out.println("<tr><td align=center>Server's Port</td>");
            out.println("<td align=center>" + request.getServerPort() + "</td></tr>");

            out.println("</TABLE><BR>");
            out.println(htmlFooter);

        }
    }