Event Level	LoggerConfig Level
--	TRACE	DEBUG	INFO	WARN	ERROR	FATAL	OFF
ALL	YES	YES	YES	YES	YES	YES	NO
TRACE	YES	NO	NO	NO	NO	NO	NO
DEBUG	YES	YES	NO	NO	NO	NO	NO
INFO	YES	YES	YES	NO	NO	NO	NO
WARN	YES	YES	YES	YES	NO	NO	NO
ERROR	YES	YES	YES	YES	YES	NO	NO
FATAL	YES	YES	YES	YES	YES	YES	NO
OFF	NO	NO	NO	NO	NO	NO	NO

package main;
 
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
 
public class Main  {
    public static void main(String args[]){
        Logger Log = LogManager.getLogger(Main.class.getName());
        Log.info("this is the info");
        Log.warn("this is the warn info");
        Log.error("this is the error info");
        Log.fatal("this is the fatal info");
        Log.trace("enter Main.test()");
        //new Main().test();
        Log.trace("exit Main.test()");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
 
<configuration debug="off" status="INFO"> <!-- 这个status是控制系统信息的输出级别 -->
	<Properties>
		<Property name="path">D:/logs</Property>
	</Properties>
 
	<Appenders>
		<Console name="Console" target="SYSTEM_OUT">	<!-- 将日志信息从控制台输出 -->
			<ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY" />
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} %-5level %class{36}.%M()/%L - %msg%xEx%n" />
		</Console>
 
		<File name="debug" fileName="${path}/debug.log" append="true">	<!-- 将日志信息写入日志文件 -->
			<Filters>
				<!--控制台只输出level及以上级别的信息（onMatch），其他的直接拒绝（onMismatch） -->
				<ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY" />
				<ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" />
			</Filters>
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} %-5level %class{36}.%M()/%L - %msg%xEx%n" />
		</File>
 
		<RollingFile name="RollingFile" fileName="${path}/log.log" filePattern="${path}/log-%d{yyyy-MM-dd}_%i.log">
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} %-5level %class{36}.%M()/%L - %msg%xEx%n" />
			<SizeBasedTriggeringPolicy size="50MB" />
		</RollingFile>
	</Appenders>
 
	<Loggers>
		<Root level="trace">
			<AppenderRef ref="Console" />   <!-- 仅有上述的Appenders配置还不够，这里还不能少，少了就不会在控制台输出 -->
			<AppenderRef ref="RollingFile" />   
			<AppenderRef ref="debug" />  <!-- 仅有上述的Appenders配置还不够，这里还不能少，少了就不会写入文件，但会创建文件 -->
		</Root>
	</Loggers>
 
</configuration>

log4j.rootLogger=debug,stdout,error

# set the output lever
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.Encoding=UTF-8
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout.ConversionPattern=[%p] - [%d{yyyy-MM-dd HH:mm:ss}] %F %m%n

# %-d{yyyy-MM-dd HH\:mm\:ss} [%p]-[%c] %m%n

# set the Spring lever
log4j.category.org.springframework.beans.factory = DEBUG

### put the log to the file
log4j.appender.debug=org.apache.log4j.RollingFileAppender
log4j.appender.debug.File=../logs/debug.log
log4j.appender.debug.MaxFileSize = 10MB
log4j.appender.debug.Threshold = DEBUG
log4j.appender.debug.Encoding=UTF-8
log4j.appender.debug.layout=org.apache.log4j.PatternLayout
log4j.appender.debug.layout.ConversionPattern=[%p] - [%d{yyyy-MM-dd HH:mm:ss}] %F %m%n

### put the log to the file
log4j.appender.error=org.apache.log4j.RollingFileAppender
log4j.appender.error.File=../logs/error.log
log4j.appender.error.MaxFileSize = 10MB
log4j.appender.error.Threshold = ERROR
log4j.appender.error.Encoding=UTF-8
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=[%p] - [%d{yyyy-MM-dd HH:mm:ss}] %F %m%n

### output the sql
log4j.logger.com.pay.dao=DEBUG

### druid sql ###
log4j.logger.druid.sql=warn,stdout
log4j.logger.druid.sql.DataSource=warn,stdout
log4j.logger.druid.sql.Connection=warn,stdout
log4j.logger.druid.sql.Statement=warn,stdout
log4j.logger.druid.sql.ResultSet=warn,stdout