log4j分级别记录日志，借鉴也可以分模块记日志

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
	
	<appender name="stdout" class="org.apache.log4j.ConsoleAppender">
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
	</appender>
	
	<appender name="traceLog4Debug" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="C:/traceLog4Debug.log"/>
		<param name="maxFileSize" value="2000KB"/>
		<param name="maxBackupIndex" value="20"/>
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
	</appender>
	
	<appender name="debugLog" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="C:/debug.log"/>
		<param name="maxFileSize" value="2000KB"/>
		<param name="maxBackupIndex" value="10"/>
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
		<SPAN style="COLOR: #ff0000"><!-- filter作用？  配置LevelMax与LevelMin限定输出到文件的日志级别 -->
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
            			<param name="LevelMax" value="DEBUG" />
            			<param name="LevelMin" value="DEBUG" />
        		</filter></SPAN>
	</appender>
	
	<appender name="infoLog" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="C:/info.log"/>
		<param name="maxFileSize" value="2000KB"/>
		<param name="maxBackupIndex" value="10"/>
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
            		<param name="LevelMax" value="INFO" />
            		<param name="LevelMin" value="INFO" />
        	</filter>
	</appender>
	
	<appender name="warnLog" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="C:/warn.log"/>
		<param name="maxFileSize" value="2000KB"/>
		<param name="maxBackupIndex" value="10"/>
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
            		<param name="LevelMax" value="WARN" />
            		<param name="LevelMin" value="WARN" />
        	</filter>
	</appender>
	
	<appender name="errorLog" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="C:/error.log"/>
		<param name="maxFileSize" value="2000KB"/>
		<param name="maxBackupIndex" value="10"/>
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>
		</layout>
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
            		<param name="LevelMax" value="ERROR" />
            		<param name="LevelMin" value="ERROR" />
       	 	</filter>
	</appender>
	
	<!-- 记录该包下所有日志 -->
	<logger name="com.javaeye.paopaohou">
		<level value="ALL"/>
		<appender-ref ref="stdout"/>
		<appender-ref ref="traceLog4Debug"/>
		<appender-ref ref="debugLog"/>
		<appender-ref ref="infoLog"/>
		<appender-ref ref="warnLog"/>
		<appender-ref ref="errorLog"/>
	</logger>
	
	
	
	<logger name="org.hibernate.SQL">
		<level value="DEBUG"/>
		<appender-ref ref="traceLog4Debug"/>
		<appender-ref ref="stdout"/>
	</logger>
	
	<logger name="org.hibernate">
		<level value="error"/>
		<appender-ref ref="traceLog4Debug"/>
		<appender-ref ref="stdout"/>
	</logger>
	
	<logger name="org.springframework">
		<level value="error"/>
		<appender-ref ref="traceLog4Debug"/>
		<appender-ref ref="stdout"/>
	</logger>

	
</log4j:configuration>