Log4j 日志打印

import org.apache.log4j.Logger;//头文件导入
import org.apache.log4j.PropertyConfigurator;

public class TestLog4J {
public static void main(String[] args) {
PropertyConfigurator.configure("log4j.properties");//利用log4j读取配置文件
Logger logger = Logger.getLogger(TestLog4J.class);
for(int i = 0; i < 10000; i++){
logger.info("zhujiadun");
logger.debug("debug " + i);
}
}
}

log4j.rootLogger=DEBUG, stdout, log, errorlog
###Console ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern =  %d{ABSOLUTE} [ %t ] [ %p ]:%L - %m%n
### Log ###  
log4j.appender.log = org.apache.log4j.DailyRollingFileAppender
log4j.appender.log.File = log/log.log
log4j.appender.log.Append = true
log4j.appender.log.Threshold = INFO
log4j.appender.log.DatePattern='.'yyyy-MM-dd
log4j.appender.log.layout = org.apache.log4j.PatternLayout
log4j.appender.log.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t ] %m%n
### Error ###
log4j.appender.errorlog = org.apache.log4j.DailyRollingFileAppender
log4j.appender.errorlog.File = log/errorlog.log
log4j.appender.errorlog.Append = true
log4j.appender.errorlog.Threshold = DEBUG 
log4j.appender.errorlog.DatePattern='.'yyyy-MM-dd
log4j.appender.errorlog.layout = org.apache.log4j.PatternLayout
log4j.appender.errorlog.layout.ConversionPattern =%-d{yyyy-MM-dd HH:mm:ss} [ %t ] %m%n

运行输出打印：

1、控制台打印

2、日志文件

#根配置
log4j.rootLogger  =   [ level ]   ,  appenderName1 ,  appenderName2 ,  …
#配置日志信息输出目的地Appender
log4j.appender.appenderName  =  fully.qualified.name.of.appender.class 
　　log4j.appender.appenderName.option1  =  value1 
　　… 
　　log4j.appender.appenderName.optionN  =  valueN 
#配置日志信息的格式（布局）
log4j.appender.appenderName.layout  =  fully.qualified.name.of.layout.class 
　　log4j.appender.appenderName.layout.option1  =  value1 
　　… 
　　log4j.appender.appenderName.layout.optionN  =  valueN