Log4j xml 配置方式_log4j.xml profile-优快云博客

本文链接：https://blog.youkuaiyun.com/johnnycode/article/details/44538895

本文详细介绍了如何通过Log4j配置实现不同级别的日志输出到不同文件，并支持过滤第三方包，包括配置web.xml、log4j.xml文件及第三方包过滤策略。

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原文链接：http://blog.youkuaiyun.com/johnnycode/article/details/44538895

1、支持不同日志级别输出到不同的文件

2、支持过滤第三方包

web.xml 配置信息，因为本文使用Spring，相关信息请自行参考！

	<!-- 配置 Log4j -->
	<context-param>
		<param-name>webAppRootKey</param-name>
		<param-value>myWebApp.root</param-value>
	</context-param>
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>classpath:log4j.xml</param-value>
	</context-param>
	<!-- 开一条watchdog线程每60秒扫描一下配置文件的变化 -->
	<context-param>
		<param-name>log4jRefreshInterval</param-name>
		<param-value>60000</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
	</listener>

log4j.xml 配置信息

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
	<!-- STDOUT 级别配置 -->
	<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
		<param name="encoding" value="UTF-8" />
		<param name="target" value="System.out" />
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern" value="[%-5p %d{HH:mm:ss}] %c - %m%n" />
		</layout>
	</appender>
	<!-- ALL 级别配置 -->
	<appender name="ALL" class="org.apache.log4j.DailyRollingFileAppender">
		<param name="encoding" value="UTF-8" />
		<param name="File" value="${myWebApp.root}/logs/all.log" />
		<param name="Append" value="true" />
		<param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern" value="[%-5p %d{yyyy-MM-dd HH:mm:ss}] %c - %m%n" />
		</layout>
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
			<param name="LevelMin" value="DEBUG" />
			<param name="LevelMax" value="ERROR" />
		</filter>
	</appender>
	<!-- ERROR 级别配置 -->
	<appender name="ERROR" class="org.apache.log4j.RollingFileAppender">
		<param name="File" value="${myWebApp.root}/logs/error.log" />
		<param name="Append" value="true" />
		<param name="MaxFileSize" value="50MB" />
		<param name="MaxBackupIndex" value="1000" />
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern" value="[%-5p %d{yyyy-MM-dd HH:mm:ss}] %c - %m%n" />
		</layout>
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
			<param name="LevelMin" value="ERROR" />
			<param name="LevelMax" value="ERROR" />
		</filter>
	</appender>
	<!-- category 定义第三方过滤条件 -->
	<category name="org.springframework">
		<priority value="warn" />
		<appender-ref ref="ALL" />
	</category>
	<category name="org.hibernate">
		<priority value="debug" />
		<appender-ref ref="ALL" />
	</category>
	<root>
		<appender-ref ref="STDOUT" />
		<appender-ref ref="ALL" />
		<appender-ref ref="ERROR" />
	</root>
</log4j:configuration>