Tomcat日志配置文件分析

时间 2019-11-05

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Tomcat的conf目录下的logger.properties为tomcat的日志配置。本篇简述每一个配置项的做用。java

handlers = 1catalina.org.apache.juli.AsyncFileHandler, 2localhost.org.apache.juli.AsyncFileHandler, 3manager.org.apache.juli.AsyncFileHandler, 4host-manager.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler
定义全部可用的handler的key。这个key分解为两部分: 前缀+类型。
好比2localhost.org.apache.juli.AsyncFileHandler前缀为2localhost.，类名为org.apache.juli.AsyncFileHandler。而java.util.logging.ConsoleHandler前缀为空。apache

Tomcat这样的设计为解决类型相同致使(好比org.apache.juli.AsyncFileHandler)的实例名
重复问题。tomcat

.handlers=1catalina.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler
用来设置根logger的handler。
再向下：
catalina.org.apache.juli.AsyncFileHandler.level = FINE
1catalina.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina.ide

2localhost.org.apache.juli.AsyncFileHandler.level = FINE
2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.设计

3manager.org.apache.juli.AsyncFileHandler.level = FINE
3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.AsyncFileHandler.prefix = manager.日志

4host-manager.org.apache.juli.AsyncFileHandler.level = FINE
4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.orm

java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatterit

这一堆分别用来设置上面5个handler的配置。好比AsyncFileHandler配置level表示handler容许输出的日志级别，directory表示日志文件的目录，prefix文件名前缀，仍是一个文件名后缀，默认为".log"。form

文件再向下，就是配置各个logger的对应的level和handler:
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.AsyncFileHandlerclass

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.AsyncFileHandler

好比loggerName为org.apache.catalina.core.ContainerBase.[Catalina].[localhost]的日志会采用2localhost.org.apache.juli.AsyncFileHandler输出到localhost.log中去。且只输出日志级别高于INFO的日志。