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如何在Tomcat中将日志级别设置为DEBUG？

debuggingtomcatloggingtomcat7tomcat6
88
我想在Tomcat中将日志级别设置为DEBUG，但在控制台上只想输出INFO和WARN级别的信息。请问有什么问题吗？
我的C:\tomcat\logging.properties文件内容如下：
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional DEBUGrmation regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

handlers = 1catalina.org.apache.juli.FileHandler, 2localhost.org.apache.juli.FileHandler, 3manager.org.apache.juli.FileHandler, 4host-manager.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler

.handlers = 1catalina.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler

############################################################
# Handler specific properties.
# Describes specific configuration DEBUG for Handlers.
############################################################

1catalina.org.apache.juli.FileHandler.level = DEBUG
1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.FileHandler.prefix = catalina.

2localhost.org.apache.juli.FileHandler.level = DEBUG
2localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.FileHandler.prefix = localhost.

3manager.org.apache.juli.FileHandler.level = DEBUG
3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.FileHandler.prefix = manager.

4host-manager.org.apache.juli.FileHandler.level = DEBUG
4host-manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
4host-manager.org.apache.juli.FileHandler.prefix = host-manager.

java.util.logging.ConsoleHandler.level = DEBUG
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter


############################################################
# Facility specific properties.
# Provides extra control for each logger.
############################################################

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = DEBUG
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.FileHandler

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

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = DEBUG
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 4host-manager.org.apache.juli.FileHandler

# For example, set the com.xyz.foo logger to only log SEVERE
# messages:
#org.apache.catalina.startup.ContextConfig.level = DEBUG
#org.apache.catalina.startup.HostConfig.level = DEBUG
#org.apache.catalina.session.ManagerBase.level = DEBUG
#org.apache.catalina.core.AprLifecycleListener.level=DEBUG

我的日志示例：

INFO: Deploying configuration descriptor manager.xml
08.11.2010 1:06:42 org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive spring-mvc-trial.war
08.11.2010 1:06:46 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory docs
08.11.2010 1:06:46 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory examples
08.11.2010 1:06:46 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
08.11.2010 1:06:46 org.apache.coyote.http11.Http11AprProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
08.11.2010 1:06:46 org.apache.coyote.ajp.AjpAprProtocol start
INFO: Starting Coyote AJP/1.3 on ajp-8009
08.11.2010 1:06:46 org.apache.catalina.startup.Catalina start
INFO: Server startup in 3777 ms
08.11.2010 1:09:36 org.apache.coyote.http11.Http11AprProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
08.11.2010 1:09:36 org.apache.coyote.ajp.AjpAprProtocol pause
INFO: Pausing Coyote AJP/1.3 on ajp-8009
08.11.2010 1:09:37 org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
08.11.2010 1:09:37 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/spring-mvc-trial] registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
08.11.2010 1:09:37 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/spring-mvc-trial] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
08.11.2010 1:09:38 org.apache.coyote.http11.Http11AprProtocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
08.11.2010 1:09:38 org.apache.coyote.ajp.AjpAprProtocol destroy
INFO: Stopping Coyote AJP/1.3 on ajp-8009
对于Tomcat 8，请参见：Tomcat 8启用调试日志以列出不需要的JAR包 - kenorb
3个回答
84
首先，要使用的日志级别是FINE，而不是DEBUG。假设DEBUG实际上是有效的，因为这会使以下解释更有意义...
在“特定处理程序属性”部分中，您正在将这些处理程序的日志级别设置为DEBUG。这意味着处理程序将处理具有DEBUG级别或更高级别的任何日志消息。这并不一定意味着任何DEBUG消息都会传递给处理程序。
在“特定设施属性”部分中，您正在将几个明确命名的记录器的日志级别设置为DEBUG。对于那些记录器，任何处于DEBUG级别或以上级别的内容将被传递给处理程序。
默认的日志级别是INFO，除了在“特定设施属性”部分提到的记录器之外，所有记录器都具有该级别。
如果您想查看所有FINE消息，请添加此内容：
.level = FINE

然而，这将会生成大量的日志信息。为你的代码设置日志记录级别可能更有用:

your.package.level = FINE

看看Tomcat 6/Tomcat 7的日志文档以获取更多信息。那里显示的示例logging.properties文件使用FINE而不是DEBUG：

...
1catalina.org.apache.juli.FileHandler.level = FINE
...

同时也提供了设置额外日志级别的示例：

# For example, set the com.xyz.foo logger to only log SEVERE
# messages:
#org.apache.catalina.startup.ContextConfig.level = FINE
#org.apache.catalina.startup.HostConfig.level = FINE
#org.apache.catalina.session.ManagerBase.level = FINE
20
2
除了已经提到的（JULI中的DEBUG -> FINE，FINER，FINEST），如果您正在使用IDE（例如Eclipse）运行Tomcat，请注意它将配置存储在不同于CATALINA_HOME的路径上，因此您可能需要添加以下内容：
-Djava.util.logging.config.file="C:\apache-tomcat-9.0.31\conf\logging.properties"

显式设置日志属性。

更多相关信息请参见：在Eclipse中如何查看Tomcat日志文件？

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