geirm 01/12/31 05:23:01 Modified: examples/logger_example README.txt Added: examples/logger_example Log4jCategoryExample.java Log: Simple example on how to use existing log4j category for logging, and a brief note about this in the README. This code is also used as an example in the dev docs. Revision Changes Path 1.3 +17 -0 jakarta-velocity/examples/logger_example/README.txt Index: README.txt =================================================================== RCS file: /home/cvs/jakarta-velocity/examples/logger_example/README.txt,v retrieving revision 1.2 retrieving revision 1.3 diff -u -r1.2 -r1.3 --- README.txt 10 Apr 2001 12:17:44 -0000 1.2 +++ README.txt 31 Dec 2001 13:23:01 -0000 1.3 @@ -23,4 +23,21 @@ logger_example.bat +Log4jCategoryExample +-------------------- +This class demonstrates how to configure Velocity to use an + existing log4j category for logging. +No batchfiles are provided as this is considered an advanced example +(and we want to stop maintaining these batch files :) + +To test this example, add the jars + + bin/velocity-dep-1.x.jar + +and + + build/lib/log4j-core-X.jar + +to your classpath, and compile and run. You will see that the log4j +output will contain the output from velocity's initialization. 1.1 jakarta-velocity/examples/logger_example/Log4jCategoryExample.java Index: Log4jCategoryExample.java =================================================================== /* * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, if * any, must include the following acknowlegement: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowlegement may appear in the software itself, * if and wherever such third-party acknowlegements normally appear. * * 4. The names "The Jakarta Project", "Velocity", and "Apache Software * Foundation" must not be used to endorse or promote products derived * from this software without prior written permission. For written * permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache" * nor may "Apache" appear in their names without prior written * permission of the Apache Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ import org.apache.velocity.app.VelocityEngine; import org.apache.velocity.runtime.RuntimeConstants; import org.apache.log4j.Category; import org.apache.log4j.BasicConfigurator; /** * Simple example class to show how to use an existing Log4j Categeory * as the Velocity logging target. * * @author <a href="mailto:[EMAIL PROTECTED]";>Geir Magnusson Jr.</a> * @version $Id: Log4jCategoryExample.java,v 1.1 2001/12/31 13:23:01 geirm Exp $ */ public class Log4jCategoryExample { public static String CATEGORY_NAME = "velexample"; public static void main( String args[] ) throws Exception { /* * configure log4j to log to console */ BasicConfigurator.configure(); Category log = Category.getInstance( CATEGORY_NAME ); log.info("Hello from Log4jCategoryExample - ready to start velocity"); /* * now create a new VelocityEngine instance, and * configure it to use the category */ VelocityEngine ve = new VelocityEngine(); ve.setProperty( RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS, "org.apache.velocity.runtime.log.SimpleLog4JLogSystem" ); ve.setProperty("runtime.log.logsystem.log4j.category", CATEGORY_NAME); ve.init(); log.info("this should follow the initialization output from velocity"); } }
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