package examples.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import weblogic.utils.*;
import weblogic.html.*;
import weblogic.common.*;
import weblogic.event.common.*;
/**
* This example demonstrates sending an event to the WebLogic Server
* containing all of the available header information of a request
* to the servlet. It uses an
* EventMessage to send information to WebLogic about the hits on
* this page; whomever has registered an interest in the event
* "HTTPWATCH" receives notification of the event, along with the
* collected information.
*
* To run this example, compile it and register the servlet with the
* initArg "imagefile" set to a local image file on your WebLogic Server
* host. Then start WebLogic. At a command-line prompt, start the
* WebLogic utility, eventsnoop, and register an interest in the
* page-related events with the following command:
*
$ java utils.eventsnoop t3://localhost:7001 HTTPWATCH
* where t3://localhost:7001 corresponds to the host and port
* of your running WebLogic Server. Then access the page. You'll see
* the resulting events in the command window.
*
* WebLogic also has a builtin service that allows you to register an
* interest in HTTP events and have them logged in common log format
* to an HTTP log. For more info, read the WebLogic Administrators
* Guide document, Setting
* up WebLogic as an HTTP server.
*
* @author Copyright (c) 1996-98 by WebLogic, Inc. All Rights Reserved.
* @author Copyright (c) 1999-2000 by BEA Systems, Inc. All Rights Reserved.
*/
public class PageEvent extends HttpServlet {
/**
* Implements the service method.
*/
public void service(HttpServletRequest req, HttpServletResponse res)
throws IOException
{
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("
Page Event Servlet");
try {
// Set up a ParamSet to hold information about the
// hit on this page.
ParamSet eventParameters = new ParamSet();
eventParameters.setParam("Request method", req.getMethod());
eventParameters.setParam("Request protocol", req.getProtocol());
eventParameters.setParam("Servlet path", req.getServletPath());
eventParameters.setParam("Path info", req.getPathInfo());
eventParameters.setParam("Path translated", req.getPathTranslated());
eventParameters.setParam("Query string", req.getQueryString());
eventParameters.setParam("Content length", req.getContentLength());
eventParameters.setParam("Content type", req.getContentType());
eventParameters.setParam("Server name", req.getServerName());
eventParameters.setParam("Server port", req.getServerPort());
eventParameters.setParam("Remote user", req.getRemoteUser());
eventParameters.setParam("Remote address", req.getRemoteAddr());
eventParameters.setParam("Remote host", req.getRemoteHost());
// Capture all other header names, and store in eventParameters
String name;
Enumeration names = req.getHeaderNames();
while (names.hasMoreElements()) {
name = (String)names.nextElement();
eventParameters.setParam(name, req.getHeader(name));
}
// Create and submit an event message to the HTTPWATCH event
// including the eventParameters captured from the HttpServletRequest
EventMessageDef ev = T3Services.getT3Services().events().
getEventMessage("HTTPWATCH", eventParameters);
ev.submit();
out.println("You have paged HTTPWATCH!
");
}
catch (Exception e) {
out.println("An exception occured:"+e+"