[英]How-To: Configure Tomcat 9 to log via Log4j2
如何将 Tomcat 9 的内部日志记录(catalina 和 localhost)重定向到 Log4j2?
虽然有许多适用于旧版本 Tomcat 和 Log4j 的指南,但我找不到任何关于 Tomcat 9 和 Log4j2 的“完整”信息; Apache Tomcat 9 文档<\/a>指向“替代日志框架提供的说明”,Apache Log4j 文档<\/a>指出(2. 中的 jar 名称已更正):
Log4j 可以用作 Apache Tomcat 的日志框架。 这种支持是通过在引导类路径中包含 log4j-api、log4j-core 和 log4j-appserver jar 来自动实现的。 名为 log4j2-tomcat.xml、log4j2-tomcat.json、log4j2-tomcat.yaml、log4j2-tomcat.yml 或 log4j2-tomcat.properties 的文件也必须放在引导类路径中。 这最容易通过以下方式完成:
- 在 catalina home 中创建一组名为 log4j2\/lib 和 log4j2\/conf 的目录。<\/li>
- 将 log4j-api-2.12.0.jar、log4j-core-2.12.0.jar 和 log4j-appserver-2.12.0.jar 放在 log4j2\/lib 目录下。<\/li>
- 在 log4j2\/conf 目录中创建名为 log4j2-tomcat.xml、log4j2-tomcat.json、log4j2-tomcat.yaml、log4j2-tomcat.yml 或 log4j2-tomcat.properties 的文件。<\/li>
在tomcat bin目录中创建或修改setenv.sh,使其包含
CLASSPATH=$CATALINA_HOME\/log4j2\/lib\/*:$CATALINA_HOME\/log4j2\/conf<\/code>
<\/li><\/ol><\/blockquote>
但是在 log4j2-tomcat.* 配置文件中放什么?
"
我在Apache Tomcat 7 文档 中找到了一个示例属性文件,但由于这是用于 Log4j 1.x,我不得不将其调整为 Log4j2 属性文件语法。 这是结果:
# 'status' refers to log messages from Log4j2 itself
monitorInterval = 30
status = warn
property.loglevel.catalina = info
property.loglevel.localhost = info
property.layoutPattern.catalina = %d %-5p [%t] %-22.22c{1} %m%n
property.layoutPattern.localhost = %d %-5p [%t] %-30.30c{1} %m%n
# Roll-over the logs once per month using CronTriggerPolicy.
property.fileDatePattern.catalina = %d{yyyy-MM}
property.fileDatePattern.localhost = %d{yyyy-MM}
property.cronTriggerSchedule.catalina = 0 0 0 1 * ?
property.cronTriggerSchedule.localhost = 0 0 0 1 * ?
## Appenders
# N.B.: - No need to specify 'appenders = CATALINA, LOCALHOST, CONSOLE'
# since these identifiers do not contain '.' characters.
# - The sub-component identifiers 'policies' and 'cron' are arbitrarily
# chosen; the actual type is specified via the 'type' attribute.
# - 'DirectWriteRolloverStrategy' is used automatically since no 'fileName' specified.
appender.CATALINA.type = RollingFile
appender.CATALINA.name = RollingFile-CATALINA
appender.CATALINA.filePattern = ${sys:catalina.base}/logs/catalina.${fileDatePattern.catalina}.log
appender.CATALINA.layout.type = PatternLayout
appender.CATALINA.layout.pattern = ${layoutPattern.catalina}
appender.CATALINA.policies.type = Policies
appender.CATALINA.policies.cron.type = CronTriggeringPolicy
appender.CATALINA.policies.cron.schedule = ${cronTriggerSchedule.catalina}
appender.CATALINA.policies.cron.evaluateOnStartup = true
appender.CATALINA.filePermissions = rw-r-----
appender.CATALINA.fileOwner = tomcat
appender.CATALINA.fileGroup = adm
appender.LOCALHOST.type = RollingFile
appender.LOCALHOST.name = RollingFile-LOCALHOST
appender.LOCALHOST.filePattern = ${sys:catalina.base}/logs/localhost.${fileDatePattern.localhost}.log
appender.LOCALHOST.layout.type = PatternLayout
appender.LOCALHOST.layout.pattern = ${layoutPattern.localhost}
appender.LOCALHOST.policies.type = Policies
appender.LOCALHOST.policies.cron.type = CronTriggeringPolicy
appender.LOCALHOST.policies.cron.schedule = ${cronTriggerSchedule.localhost}
appender.LOCALHOST.policies.cron.evaluateOnStartup = true
appender.LOCALHOST.filePermissions = rw-r-----
appender.LOCALHOST.fileOwner = tomcat
appender.LOCALHOST.fileGroup = adm
# Uncomment if you want to keep logging to catalina.out after Log4j2 takes over.
#appender.CONSOLE.type = Console
#appender.CONSOLE.name = STDOUT
#appender.CONSOLE.layout.type = PatternLayout
## Configure which loggers log to which appenders
rootLogger.level = ${loglevel.catalina}
rootLogger.appenderRef.CATALINA.ref = RollingFile-CATALINA
#rootLogger.appenderRef.stdout.ref = STDOUT
# Here, the identifier does contain '.' characters, so we must specify the list.
loggers = org.apache.catalina.core.ContainerBase.[Catalina].[localhost]
logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].name = LOCALHOST
logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = ${loglevel.localhost}
logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].appenderRef.LOCALHOST.ref = RollingFile-LOCALHOST
我使用 Log4j2 的主要原因是能够获得每月的日志轮换,但是您可以轻松地调整您喜欢的所有内容,甚至无需重新启动 Tomcat。
为了使用 log4j2 工作 Tomcat 9.0.54+ 设置,请完成以下操作:
要使用 JDK Logging Adapter,您必须将系统属性 java.util.logging.manager 设置为 org.apache.logging.log4j.jul.LogManager 这必须通过命令行完成(即,使用 -Djava.util .logging.manager=org.apache.logging.log4j.jul.LogManager 参数)或在对 LogManager 或 Logger 进行任何调用之前使用 System.setProperty()。
<?xml version="1.0" encoding="utf-8"?>
<!-- ================================================ -->
<!-- Tomcat log4j2 logger -->
<!-- ================================================ -->
<Configuration status="INFO" monitorInterval="60">
<Properties>
<Property name="logdir">${sys:catalina.base}/logs</Property>
<Property name="layout">[%d][%p][%c:%L:%M] - %m%n</Property>
</Properties>
<Appenders>
<Console name="DEFAULT" target="SYSTEM_OUT">
<PatternLayout pattern="${layout}"/>
</Console>
<Async name="ASYNC-DEFAULT" includeLocation="true">
<AppenderRef ref="DEFAULT"/>
<AppenderRef ref="INTOFILE"/>
</Async>
<RollingFile name="INTOFILE"
fileName="${logdir}/worker.log"
filePattern="${logdir}/catalina.%d{yyyy-MM-dd}-%i.log">
<PatternLayout pattern="${layout}"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="10 MB"/>
</Policies>
<DefaultRolloverStrategy max="100"/>
</RollingFile>
</Appenders>
<Loggers>
<!-- OFF -->
<!-- ERROR -->
<!-- WARN -->
<!-- INFO -->
<logger name="org.apache.catalina" level="INFO"/>
<logger name="org.apache.catalina.core" level="INFO"/>
<logger name="org.apache.tomcat" level="INFO"/>
<logger name="org.apache.coyote" level="INFO"/>
<logger name="org.apache.jasper" level="INFO"/>
<!-- DEBUG -->
<logger name="org.apache.catalina.startup" level="DEBUG"/>
<logger name="org.apache.tomcat1" level="DEBUG"/>
<Root level="TRACE">
<AppenderRef ref="ASYNC-DEFAULT"/>
</Root>
</Loggers>
</Configuration>
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