log4j自定义日志等级
菜鸟的脚步 2013-02-28
文章源地址：http://www.186info.com/?p=61
log4j自定义日志等级，步骤如下
1.继承logj的level类，定义一个自己的日志级别：
publicclassTestLevelextendsLevel{
publicTestLevel(intlevel,StringlevelStr,intsyslogEquivalent){
super(level,levelStr,syslogEquivalent);
}
}
2.继承Filter类，定义一个自己的filter：
publicclassMyLogFiterextendsFilter{
/**
*DowereturnACCEPTwhenamatchoccurs.Defaultis
*<code>false</code>,sothatlaterfiltersgetrunbydefault
*/
booleanacceptOnMatch=false;
intlevelMin;
intlevelMax;
/**
*Returnthedecisionofthisfilter.
*/
@Override
publicintdecide(LoggingEventevent){
intinputLevel=event.getLevel().toInt();
if(inputLevel>=levelMin&&inputLevel<=levelMax){
returnFilter.ACCEPT;
}
returnFilter.DENY;
}
/**
*Getthevalueofthe<code>LevelMax</code>option.
*/
publicintgetLevelMax(){
returnlevelMax;
}
/**
*Getthevalueofthe<code>LevelMin</code>option.
*/
publicintgetLevelMin(){
returnlevelMin;
}
/**
*Getthevalueofthe<code>AcceptOnMatch</code>option.
*/
publicbooleangetAcceptOnMatch(){
returnacceptOnMatch;
}
/**
*Setthe<code>LevelMax</code>option.
*/
publicvoidsetLevelMax(intlevelMax){
this.levelMax=levelMax;
}
/**
*Setthe<code>LevelMin</code>option.
*/
publicvoidsetLevelMin(intlevelMin){
this.levelMin=levelMin;
}
/**
*Setthe<code>AcceptOnMatch</code>option.
*/
publicvoidsetAcceptOnMatch(booleanacceptOnMatch){
this.acceptOnMatch=acceptOnMatch;
}
}
3.在不侵入log4j源代码的情况下，对log4j的logger输出进行封装，并且添加自己定义的级别的输出方法：
publicclassLogger{
privatefinalstaticintpriority=40100;
privatefinalorg.apache.log4j.Loggerlogger;
privatestaticfinalStringFQCN;
//以下为自定义的日志级别
publicstaticfinalLevelPAY_LEVEL=newTestLevel(priority,“TEST”,SyslogAppender.LOG_LOCAL0);
static{
FQCN=Logger.class.getName();
}
privateLogger(Class<?>clazz){
logger=org.apache.log4j.Logger.getLogger(clazz);
}
privateLogger(){http://192.168.226.114:8080/tfs/JDRD/RD/_workitems
logger=org.apache.log4j.Logger.getRootLogger();
}
publicstaticLoggergetLogger(Class<?>clazz){
returnnewLogger(clazz);
}
publicstaticLoggergetRootLogger(){
returnnewLogger();
}
publicvoidtest(Objectmessage){
forcedLog(logger,PAY_LEVEL,message);
}
publicvoidtest(Objectmessage,Throwablet){
forcedLog(logger,PAY_LEVEL,message,t);
}
privatestaticvoidforcedLog(org.apache.log4j.Loggerlogger,Levellevel,Objectmessage){
logger.callAppenders(newLoggingEvent(FQCN,logger,level,message,null));
}
privatestaticvoidforcedLog(org.apache.log4j.Loggerlogger,Levellevel,Objectmessage,Throwablet){
logger.callAppenders(newLoggingEvent(FQCN,logger,level,message,t));
}
}
4.修改log4j的xml配置文件,添加自定义的appender：
<appendername=”TEST”>
<paramname=”File”value=”/var/Test.log”/>
<paramname=”Append”value=”true”/>
<paramname=”DatePattern”value=”‘.’yyyy-MM-dd-HH”/>
<paramname=”BufferedIO”value=”true”/>
<!–8K为一个写单元–>
<paramname=”BufferSize”value=”8192″/>
<layout>
<paramname=”ConversionPattern”value=”%d{yyyy-MM-ddHH:mm:ss}\t%F\t%L\t%M\t%m%n”/>
</layout>
<filterclass=”MyLogFiter”>
<paramname=”LevelMin”value=”40100″/>
<paramname=”LevelMax”value=”40100″/>
</filter>
</appender>
5.在需要输出日志的地方使用封装的logger输出方法即可：
logger.test(“hahaha,test”);
