Java tutorial
/* * JBoss, Home of Professional Open Source. * Copyright 2006, Red Hat Middleware LLC, and individual contributors * as indicated by the @author tags. See the copyright.txt file in the * distribution for a full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jboss.test.classloader.scoping.override.web.comlog; import java.io.IOException; import java.io.PrintWriter; import java.io.File; import java.util.Date; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.naming.InitialContext; import javax.naming.Context; import javax.naming.NamingException; import org.apache.commons.logging.LogFactory; import org.apache.commons.logging.Log; /** A servlet that validates that it sees the application specific log4j output * in the ${jboss.server.log.dir}/cl-test.log increasing. The logging interface * used is the commons-logging LogFactory/Log. * * @author Scott.Stark@jboss.org * @version $Revision: 57211 $ */ public class Log4jServlet extends HttpServlet { private static Log log = LogFactory.getLog(Log4jServlet.class); /** * * @param servletConfig * @throws javax.servlet.ServletException */ public void init(ServletConfig servletConfig) throws ServletException { super.init(servletConfig); log.info("init, servletConfig=" + servletConfig); System.out.println("Log class: " + log.getClass()); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } private void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { log.info("processRequest, path=" + request.getPathInfo()); try { InitialContext ctx = new InitialContext(); Context enc = (Context) ctx.lookup("java:comp/env"); log.info("Was able to lookup ENC, " + enc); } catch (NamingException e) { throw new ServletException("Failed to lookup ENC", e); } // Validate that the cl-test.log String logDir = System.getProperty("jboss.server.log.dir"); File logFile = new File(logDir, "cl-test.log"); if (logFile.exists() == false) throw new ServletException(logFile + " does not exist"); long length = logFile.length(); log.info("Current length = " + length); for (int n = 0; n < 100; n++) log.info("Msg #" + n); long lastModified = logFile.lastModified(); long length2 = logFile.length(); if (!(length2 > length)) throw new ServletException(logFile + " length is not increasing"); response.setContentType("text/html"); PrintWriter pw = response.getWriter(); pw.println("<html><head><title>Commons logging test servlet</title></head>"); pw.println("<body><h1>Commons logging test servlet</h1>"); pw.println("Log length: " + length2); pw.println(", LastModified: " + new Date(lastModified)); pw.println("</body></html>"); pw.flush(); } }