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POHow to make simple log4j configuration?
 

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  1. POHow to make simple log4j configuration?
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    <p>I want to make to log file to my application.<br> I try Appach log4j for this. In Java code i says: </p> <pre><code> Logger log = Logger.getLogger(uploadfile.class); log.debug("Start"); </code></pre> <p>I create file <code>src\log4j.properties</code> with:</p> <pre><code># ***** Set root logger level to DEBUG and its only appender to A. log4j.rootLogger=DEBUG, R, A log4j.rootLogger=INFO, A log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.MaxFileSize=100mb log4j.appender.R.MaxBackupIndex=1000 log4j.appender.R.File=c:/uploaded_files/server.log log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c - %m%n # ***** A is set to be a ConsoleAppender. log4j.appender.A=org.apache.log4j.ConsoleAppender # ***** A uses PatternLayout. log4j.appender.A.Threshold=INFO log4j.appender.A.layout=org.apache.log4j.PatternLayout log4j.appender.A.layout.ConversionPattern=%d [%t] %-5p %c - %m%n log4j.logger.org.hibernate.type.BasicTypeRegistry=INFO log4j.logger.com.opensymphony.xwork2.config.providers.XmlConfigurationProvider=INFO </code></pre> <p>I copy this <a href="https://stackoverflow.com/questions/7890983/simple-log4j-configuration-issue">there</a>. And i get error:</p> <pre><code> 13.02.2013 9:03:34 org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [uploadfile] in context with path [/gis-mrsk-portlet] threw exception [Servlet execution threw an exception] with root cause java.lang.NoClassDefFoundError: Could not initialize class org.apache.log4j.LogManager at org.apache.log4j.Logger.getLogger(Logger.java:117) at test.uploadfile.doPost(uploadfile.java:35) </code></pre> <p>What i doing wrong? And how to configure log4j for simple?</p> <p><strong>UPDATE</strong></p> <p>If i use this config i get log file but its empty:</p> <pre><code>Set root category priority to INFO and its only appender to CONSOLE. log4j.rootCategory=INFO, CONSOLE, LOGFILE Set the enterprise logger priority to FATAL log4j.logger.org.apache.axis2.enterprise=FATAL log4j.logger.de.hunsicker.jalopy.io=FATAL log4j.logger.httpclient.wire.header=FATAL log4j.logger.org.apache.commons.httpclient=FATAL CONSOLE is set to be a ConsoleAppender using a PatternLayout. log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout log4j.appender.CONSOLE.layout.ConversionPattern=[%p] %m%n LOGFILE is set to be a File appender using a PatternLayout. log4j.appender.LOGFILE=org.apache.log4j.FileAppender log4j.appender.LOGFILE.File=C:/uploaded_files/LogFile.log log4j.appender.LOGFILE.Append=true log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout log4j.appender.LOGFILE.layout.ConversionPattern=%d [%t] %-5p %c %x - %m%n </code></pre>
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