Log4j学习

学习链接：

http://www.codeceo.com/article/log4j-usage.html

http://www.blogjava.net/kit-soft/archive/2009/08/28/292977.html

http://www.cnblogs.com/ITEagle/archive/2010/04/23/1718365.html

log4j文件：

log4j.rootLogger=info,C,R

log4j.appender.C=org.apache.log4j.ConsoleAppender
log4j.appender.C.Target=System.out
log4j.appender.C.layout=org.apache.log4j.PatternLayout
log4j.appender.C.layout.ConversionPattern=%-d %5p [%C.java:%L] - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=D://logs/nisweb.log
log4j.appender.R.MaxFileSize=5MB
log4j.appender.R.MaxBackupIndex=2
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%-d %5p [%C.java:%L] - %m%n

测试：

package com.mucfc;

import org.apache.log4j.Logger;

public class Test {

    private static Logger logger = Logger.getLogger(Test.class);

    public void logFunction(){
        logger.info("111122");
    }

    public static void main(String[] args) {
    //    PropertyConfigurator.configure(ClassLoader.getSystemResource("log4j.properties"));
        System.out.println(ClassLoader.getSystemResource("log4j.properties"));
//        Logger logger = Logger.getLogger(Test.class);
        logger.info("message info");
        logger.error("message error");
    }
}

结果：

log4j.properties地址： file:/D:/work/workspace/LogLearning/build/classes/log4j.properties
2016-03-08 15:01:32,769  INFO [com.mucfc.Test.java:17] - message info
2016-03-08 15:01:32,771 ERROR [com.mucfc.Test.java:18] - message error