如何在 Tomcat 中将日志记录级别设置为 DEBUG？

我想在 tomcat 中将级别日志记录设置为 DEBUG，但在控制台中仍然只有 INFO 和 WARN 输出。 有人能告诉我出了什么问题吗？

我的 C:\tomcat\logging.properties:

# 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
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#     http://www.apache.org/licenses/LICENSE-2.0
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# 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

首先，要使用的级别名称是FINE, not DEBUG。让我们假设一下DEBUG实际上是有效的，因为它使以下解释更有意义......

In the Handler specific properties部分，您将这些处理程序的日志记录级别设置为DEBUG。这意味着处理程序将处理任何日志消息DEBUG级别或更高。这并不一定意味着任何DEBUG消息实际上被传递给处理程序。

In the Facility specific properties部分，您正在为一些明确命名的记录器设置日志记录级别DEBUG。对于那些伐木工来说，任何水平的东西DEBUG或以上will传递给处理程序。

默认日志记录级别是INFO，除了中提到的记录器Facility specific properties部分，所有记录器都将具有该级别。

如果你想看全部FINE消息，添加以下内容：

.level = FINE

但是，这将生成大量日志消息。设置代码的日志记录级别可能更有用：

your.package.level = FINE

See the Tomcat 6 https://tomcat.apache.org/tomcat-6.0-doc/logging.html/Tomcat 7 https://tomcat.apache.org/tomcat-7.0-doc/logging.html记录文档以获取更多信息。这个例子logging.properties那里显示的文件使用FINE代替DEBUG:

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

还提供了设置其他日志记录级别的示例：

# 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