为项目增加log4j支持

需要做三件事

1 add jar file to ur pom.xml

<dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.12</version></dependency>

2 config ur log4j properties(better named log4j.xml) and format java util file[Logj.java]

<?xml version="1.0" encoding="UTF-8"?><!--    NOTE: This copyright does *not* cover user programs that use HQ    program services by normal system calls through the application    program interfaces provided as part of the Hyperic Plug-in Development    Kit or the Hyperic Client Development Kit - this is merely considered    normal use of the program, and does *not* fall under the heading of     "derived work".     Copyright (C) [2009-2010], VMware, Inc.     This file is part of HQ.     HQ is free software; you can redistribute it and/or modify     it under the terms version 2 of the GNU General Public License as     published by the Free Software Foundation. This program 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 General Public License for more     details.     You should have received a copy of the GNU General Public License     along with this program; if not, write to the Free Software     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307     USA.--><!DOCTYPE log4j:configuration PUBLIC "-//LOGGER" "log4j.dtd"><log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"><!-- ============================== --><!-- Appenders --><!-- ============================== --><!-- Provides Console Logging --><appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender"><param name="Target" value="System.out" /><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%d{dd-MM-yyyy HH:mm:ss,SSS z} %-5p [%t] [%c@%L] %m%n" /></layout></appender><!--  Provides File Logging  --><appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender"><param name="File" value="agent.log" /><param name="Append" value="true" /><param name="DatePattern" value="'.'yyyy-MM-dd" /><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%d{dd-MM-yyyy HH:mm:ss,SSS z} %-5p [%t] [%c@%L] %m%n" /></layout></appender><!--A SYSLOG Appender for use with the SyslogAction class. To enable, makesure the syslogd on the box has been started with '-r' so that itaccepts network connections. Separately, you'll need to enable thealert gui by setting the SYSLOG_ALERTS_ENABLED attribute in the HQdatabase's EAM_CONFIG_PROPS table to 'true'.--><!--<appender name="SYSLOG" class="org.apache.log4j.net.SyslogAppender"><errorHandler class="org.apache.log4j.helpers.OnlyOnceErrorHandler" /><param name="Facility" value="SYSLOG" /> <paramname="FacilityPrinting" value="true" /> <param name="SyslogHost"value="localhost" /> <layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%c{1}[%r]: %m%n" /> </layout></appender> <loggername="org.hyperic.hq.bizapp.server.action.log.SyslogAction"> <levelvalue="ERROR" /> <appender-ref ref="SYSLOG" /> </logger>--><!-- ====================== --><!-- ASYNC Appender for all Logging --><!-- ====================== --><appender name="ASYNC" class="org.apache.log4j.AsyncAppender"><appender-ref ref="FILE" /><!--    <appender-ref ref="SMTP"/>    --></appender><!-- ============================== --><!-- 3rd party loggers --><!-- ============================== --><logger name="org.springframework"><level value="warn" /></logger><logger name="org.springframework.core"><level value="info" /></logger><logger name="org.springframework.beans"><level value="info" /></logger><logger name="org.springframework.context"><level value="info" /></logger><logger name="org.springframework.web"><level value="info" /></logger><logger name="org.apache.tools.ant"><level value="error" /></logger><!-- Turn off form validation messages --><logger name="org.apache.commons.validator.ValidatorResources"><level value="OFF" /></logger>        <!-- turn off "handling transient entity in delete processing" log message when pojos are deleted -->        <logger name="org.hibernate.event.def.DefaultLoadEventListener">            <level value="OFF" />        </logger>        <!-- turn off "handling transient entity in delete processing" log message when pojos are deleted -->        <logger name="org.hibernate.event.def.DefaultDeleteEventListener">            <level value="OFF" />        </logger><!-- Turn off form struts messages --><logger name="org.apache.struts"><level value="OFF" /></logger><!-- Turn off useless error messages, HHQ-3920 --><logger name="org.hibernate.cache.ReadWriteCache">  <level value="OFF"/></logger>        <!-- HHQ-4744, turn off hibernate logging of StaleStateException, all errors are logged in HQ -->        <logger name="org.hibernate.event.def.AbstractFlushingEventListener">            <level value="OFF" />        </logger>        <logger name="org.hibernate.jdbc.AbstractBatcher">            <level value="OFF" />        </logger><!-- ======================= --><!-- Setup the Root logger --><!-- ======================= --><root><level value="INFO" /><appender-ref ref="CONSOLE" /><appender-ref ref="FILE" /></root></log4j:configuration>

/**   * @Title: UtilLog.java * @Package com.upyoo.agent.util * @Description: TODO * @author StevenLii  * @date 2015年1月25日 下午10:54:55 * @version V1.0   */package com.upyoo.util;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;/** * @ClassName: UtilLog * @Description: TODO * @author lizhiqiang * @date 2015年1月25日 下午10:54:55 *  */public class Logj {private static Log logger=LogFactory.getLog(Logj.class);public static void info(Log logger,String message,Object... args){logger.info(String.format("%s,%s,%s",String.format(message,args)));}public static void info(String message,Object... args){logger.info(String.format("%s,%s,%s",String.format(message,args)));}public static void info(Log logger,String message){logger.info(String.format("%s,%s,%s",String.format(message)));}public static void info(String message){logger.info(String.format("%s,%s,%s",String.format(message)));}public static void warn(Log logger,String message,Object... args){logger.warn(String.format("%s,%s,%s",String.format(message,args)));}public static void error(Log logger, String message, Throwable t, Object... args){if(t == null){logger.error(String.format("%s,%s,%s",String.format(message,args)));}else{//logger.error(String.format("%s,%s,%s, %s",String.format(message,args)), t);}}}

3 use it

3.1 just add the content inner the class like this

protected static Log logger=LogFactory.getLog(ProtocolCollector.class);

3.2 and use the log content like this

Logj.warn(logger,"%s has not entity, plz check out %s file is exit or ping data is exit!",type, type + "_" + agentid);

3.3 if u have't add logj.java

you can also use log4j like this

log.info(...)