tomcat日志级别有以下几种：

Log level Description

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• SEVERE(highest) Captures exception and Error
• WARNING Warning messages
• INFO Informational message, related to the server activity
• CONFIG Configuration message
• FINE Detailed activity of the server transaction (similar to debug)
• FINER More detailed logs than FINE
• FINEST(least) Entire flow of events (similar to trace)

比如看下如下文件配置的日志级别：

localhost.org.apache.juli.FileHandler.level = FINE
localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
localhost.org.apache.juli.FileHandler.prefix = localho
```st.

**日志的内容：**

############################################################
Facility specific properties.
Provides extra control for each logger.
############################################################
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager] .level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager] .handlers = 3manager.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host- manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host- manager].handlers = 4host-manager.org.apache.juli.FileHandler

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