Log4j2 中日志文件的位置
Location of log file from Log4j2
我正在尝试使用 Jersey 为 Java 网络应用程序项目设置 Log4j2。这是我保存在 WEB-INF/classes:
中的 log4j2.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
</Console>
<File name="MyFile" fileName="/home/hans/Dev/Software/Tomcat/logs/all.log">
<PatternLayout pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</File>
</Appenders>
<Loggers>
<Root level="debug">
<AppenderRef ref="Console" />
<AppenderRef ref="MyFile"/>
</Root>
</Loggers>
</Configuration>
当我在 Intellij (IJ) 中 运行 Tomcat 上的项目时，它会根据 Log4j2.xml 文件在控制台上正常打印。当我将相同的 WAR 文件直接部署到本地 Tomcat 服务器时，我无法获得控制台输出，因此我指定了一个要写入 /home/hans/Dev/Software/Tomcat/logs/all.log 的日志文件。我已经设置了日志文件夹的权限，以便任何人都可以写入它，但日志文件不会写入该文件夹。
在 IJ 中启动服务器时，我收到以下消息：
ERROR StatusLogger File not found in file system or classpath: /WEB-INF/classes/log4j2.xml
ERROR StatusLogger File not found in file system or classpath: /WEB-INF/classes/log4j2.xml
ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
我尝试了两种不同的设置。两者都给出相同的错误。这是两个设置和结果：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>/WEB-INF/classes/log4j2.xml</param-value>
</context-param>
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>log4j2.xml</param-value>
</context-param>
在/WEB-INF/classes中有log4j2.xml
在/WEB-INF中有log4j2.xml
来自 Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE 的输出。我只能看到它正在寻找配置文件，但我看不到它在寻找什么。
DEBUG StatusLogger Log4jServletContainerInitializer starting up Log4j in Servlet 3.0+ environment.
DEBUG StatusLogger Loaded Provider Provider[priority=10, className=org.apache.logging.log4j.core.impl.Log4jContextFactory, url=jar:file:/home/mikael/Dev/Java/Java%20Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/lib/log4j-core-2.7.jar!/META-INF/log4j-provider.properties, classLoader=ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
]
DEBUG StatusLogger Using ShutdownCallbackRegistry class org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry
DEBUG StatusLogger Using the servlet context name "CurrencyRegistry".
DEBUG StatusLogger getConfigURI found [log4j2.xml] in servletContext at [log4j2.xml]
DEBUG StatusLogger Took 0.087752 seconds to load 192 plugins from ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
DEBUG StatusLogger PluginManager 'Converter' found 41 plugins
DEBUG StatusLogger Starting OutputStreamManager SYSTEM_OUT.false.false-1
DEBUG StatusLogger PluginManager 'ConfigurationFactory' found 4 plugins
DEBUG StatusLogger Missing dependencies for Yaml support
DEBUG StatusLogger Missing dependencies for Json support
DEBUG StatusLogger Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@7dea68f1
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger File not found in file system or classpath: log4j2.xml
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger File not found in file system or classpath: log4j2.xml
TRACE StatusLogger Trying to find [log4j2-testCurrencyRegistry.properties] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
<---MORE OF THESE TESTS TO FIND THE CONFIG FILE NONE OF THEM FINDS THE FILE--->
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
将 log4j2.xml 文件移动到 src 文件夹后，它现在被 log4j2 拾取。我仍然收到一些警告。
log4j:WARN No appenders could be found for logger (org.jose4j.jwa.AlgorithmFactoryFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
我正在使用使用 SLF4J 进行日志记录的 Bitbuckets JWT 库，它需要使用
桥接到 log4j2
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.0.2</version>
</dependency>
移动文件后，Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE 的输出如下所示。现在看起来它能够在 /WEB-INF/classes 中找到文件，即使该文件在 src 下也是如此。不知道为什么。
DEBUG StatusLogger Log4jServletContainerInitializer starting up Log4j in Servlet 3.0+ environment.
DEBUG StatusLogger Loaded Provider Provider[priority=10, className=org.apache.logging.log4j.core.impl.Log4jContextFactory, url=jar:file:/home/mikael/Dev/Java/Java%20Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/lib/log4j-core-2.7.jar!/META-INF/log4j-provider.properties, classLoader=ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
]
DEBUG StatusLogger Using ShutdownCallbackRegistry class org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry
DEBUG StatusLogger Using the servlet context name "CurrencyRegistry".
DEBUG StatusLogger getConfigURI found [log4j2.xml] in servletContext at [log4j2.xml]
DEBUG StatusLogger Took 0.097889 seconds to load 192 plugins from ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
DEBUG StatusLogger PluginManager 'Converter' found 41 plugins
DEBUG StatusLogger Starting OutputStreamManager SYSTEM_OUT.false.false-1
DEBUG StatusLogger PluginManager 'ConfigurationFactory' found 4 plugins
DEBUG StatusLogger Missing dependencies for Yaml support
DEBUG StatusLogger Missing dependencies for Json support
DEBUG StatusLogger Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@2f824a06
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
2017-01-18 11:01:06,589 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting LoggerContext[name=CurrencyRegistry] from configuration at log4j2.xml
2017-01-18 11:01:06,590 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting LoggerContext[name=CurrencyRegistry, org.apache.logging.log4j.core.LoggerContext@77feb3ee] with configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]...
2017-01-18 11:01:06,596 RMI TCP Connection(2)-127.0.0.1 DEBUG Shutdown hook enabled. Registering a new one.
2017-01-18 11:01:06,598 RMI TCP Connection(2)-127.0.0.1 DEBUG Initializing configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]
2017-01-18 11:01:06,610 RMI TCP Connection(2)-127.0.0.1 DEBUG Installed script engines
2017-01-18 11:01:07,234 RMI TCP Connection(2)-127.0.0.1 DEBUG Oracle Nashorn Version: 1.8.0_111, Language: ECMAScript, Threading: Not Thread Safe, Compile: true, Names: {nashorn, Nashorn, js, JS, JavaScript, javascript, ECMAScript, ecmascript}
2017-01-18 11:01:07,235 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Core' found 108 plugins
2017-01-18 11:01:07,235 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Level' found 0 plugins
2017-01-18 11:01:07,241 RMI TCP Connection(2)-127.0.0.1 DEBUG Log4j2 ConfigurationScheduler: No scheduled items
2017-01-18 11:01:07,242 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Lookup' found 14 plugins
2017-01-18 11:01:07,245 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout].
2017-01-18 11:01:07,258 RMI TCP Connection(2)-127.0.0.1 TRACE TypeConverterRegistry initializing.
2017-01-18 11:01:07,259 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'TypeConverter' found 23 plugins
2017-01-18 11:01:07,281 RMI TCP Connection(2)-127.0.0.1 DEBUG PatternLayout$Builder(pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n", PatternSelector=null, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Replace=null, charset="null", alwaysWriteExceptions="null", noConsoleNoAnsi="null", header="null", footer="null")
2017-01-18 11:01:07,282 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Converter' found 41 plugins
2017-01-18 11:01:07,283 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.ConsoleAppender].
2017-01-18 11:01:07,296 RMI TCP Connection(2)-127.0.0.1 DEBUG ConsoleAppender$Builder(target="SYSTEM_OUT", follow="null", direct="null", bufferedIo="null", bufferSize="null", immediateFlush="null", ignoreExceptions="null", PatternLayout(%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n), name="Console", Filter=null)
2017-01-18 11:01:07,297 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting OutputStreamManager SYSTEM_OUT.false.false
2017-01-18 11:01:07,297 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout].
2017-01-18 11:01:07,299 RMI TCP Connection(2)-127.0.0.1 DEBUG PatternLayout$Builder(pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n", PatternSelector=null, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Replace=null, charset="null", alwaysWriteExceptions="null", noConsoleNoAnsi="null", header="null", footer="null")
2017-01-18 11:01:07,318 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.FileAppender].
2017-01-18 11:01:07,322 RMI TCP Connection(2)-127.0.0.1 DEBUG FileAppender$Builder(fileName="/home/mikael/Dev/Software/Tomcat/logs/all.log", append="null", locking="null", advertise="null", advertiseUri="null", createOnDemand="null", Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), bufferedIo="null", bufferSize="null", immediateFlush="null", ignoreExceptions="null", PatternLayout(%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n), name="MyFile", Filter=null)
2017-01-18 11:01:07,326 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting FileManager /home/mikael/Dev/Software/Tomcat/logs/all.log
2017-01-18 11:01:07,326 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appenders, class=org.apache.logging.log4j.core.config.AppendersPlugin].
2017-01-18 11:01:07,327 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenders(={Console, MyFile})
2017-01-18 11:01:07,328 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef].
2017-01-18 11:01:07,333 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenderRef(ref="Console", level="null", Filter=null)
2017-01-18 11:01:07,334 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef].
2017-01-18 11:01:07,334 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenderRef(ref="MyFile", level="null", Filter=null)
2017-01-18 11:01:07,335 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=root, class=org.apache.logging.log4j.core.config.LoggerConfig$RootLogger].
2017-01-18 11:01:07,337 RMI TCP Connection(2)-127.0.0.1 DEBUG createLogger(additivity="null", level="DEBUG", includeLocation="null", ={Console, MyFile}, ={}, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Filter=null)
2017-01-18 11:01:07,342 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin].
2017-01-18 11:01:07,343 RMI TCP Connection(2)-127.0.0.1 DEBUG createLoggers(={root})
2017-01-18 11:01:07,345 RMI TCP Connection(2)-127.0.0.1 DEBUG Configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml] initialized
2017-01-18 11:01:07,345 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 DEBUG Started configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml] OK.
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 TRACE Stopping org.apache.logging.log4j.core.config.DefaultConfiguration@31af9852...
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration notified 1 ReliabilityStrategies that config will be stopped.
2017-01-18 11:01:07,347 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopping root LoggerConfig.
2017-01-18 11:01:07,347 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration notifying ReliabilityStrategies that appenders will be stopped.
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopping remaining Appenders.
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 DEBUG Shutting down OutputStreamManager SYSTEM_OUT.false.false-1
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 DEBUG Shut down OutputStreamManager SYSTEM_OUT.false.false-1, all resources released: true
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopped 1 remaining Appenders.
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration cleaning Appenders from 1 LoggerConfigs.
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 DEBUG Stopped org.apache.logging.log4j.core.config.DefaultConfiguration@31af9852 OK
2017-01-18 11:01:07,352 RMI TCP Connection(2)-127.0.0.1 TRACE Reregistering MBeans after reconfigure. Selector=org.apache.logging.log4j.core.selector.ClassLoaderContextSelector@3b475abf
2017-01-18 11:01:07,352 RMI TCP Connection(2)-127.0.0.1 TRACE Reregistering context (1/1): 'CurrencyRegistry' org.apache.logging.log4j.core.LoggerContext@77feb3ee
我不知道为什么配置文件在WEB-INF文件夹中时它不起作用。也许是我的文件夹结构不适用于 log4j2 如何定位配置文件。我也不明白为什么我把配置文件移到src.
下却发现/WEB-INF/classes下的配置文件
我相信指定的路径是相对于 Web 应用程序类路径的根目录的，因此：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>/WEB-INF/classes/log4j2.xml</param-value>
</context-param>
仅当 WEB-INF/classes/WEB-INF/classes/log4j2.xml 存在时才会被发现。由于在您的示例中 log4j2.xml 文件位于类路径的根目录中，因此以下配置应该足够了：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>log4j2.xml</param-value>
</context-param>
您可以通过设置系统属性 -Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE来debug配置。
log4j:WARN 消息不是由 Log4j2 生成的。只有当类路径中某处有旧的 Log4j 1.2.x jar 文件时，您才会看到这些消息。
IntelliJ 将 src 中的所有资源复制到类路径 (WEB-INF/classes)。在构建过程中，它可能首先清理目标目录，因此它删除了您手动复制到那里的所有文件。所以不要手动将文件放入 classes，你只是在与 IDE 战斗。标准设置是遵循Maven目录布局，即将配置文件放在resources目录下。这个目录需要添加到类路径中。请参阅 IntelliJ 帮助以将文件夹指定为资源文件夹。
我正在尝试使用 Jersey 为 Java 网络应用程序项目设置 Log4j2。这是我保存在 WEB-INF/classes:
log4j2.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
</Console>
<File name="MyFile" fileName="/home/hans/Dev/Software/Tomcat/logs/all.log">
<PatternLayout pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</File>
</Appenders>
<Loggers>
<Root level="debug">
<AppenderRef ref="Console" />
<AppenderRef ref="MyFile"/>
</Root>
</Loggers>
</Configuration>
当我在 Intellij (IJ) 中 运行 Tomcat 上的项目时，它会根据 Log4j2.xml 文件在控制台上正常打印。当我将相同的 WAR 文件直接部署到本地 Tomcat 服务器时，我无法获得控制台输出，因此我指定了一个要写入 /home/hans/Dev/Software/Tomcat/logs/all.log 的日志文件。我已经设置了日志文件夹的权限，以便任何人都可以写入它，但日志文件不会写入该文件夹。
在 IJ 中启动服务器时，我收到以下消息：
ERROR StatusLogger File not found in file system or classpath: /WEB-INF/classes/log4j2.xml
ERROR StatusLogger File not found in file system or classpath: /WEB-INF/classes/log4j2.xml
ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
我尝试了两种不同的设置。两者都给出相同的错误。这是两个设置和结果：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>/WEB-INF/classes/log4j2.xml</param-value>
</context-param>
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>log4j2.xml</param-value>
</context-param>
在/WEB-INF/classes中有log4j2.xml
在/WEB-INF中有log4j2.xml
来自 Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE 的输出。我只能看到它正在寻找配置文件，但我看不到它在寻找什么。
DEBUG StatusLogger Log4jServletContainerInitializer starting up Log4j in Servlet 3.0+ environment.
DEBUG StatusLogger Loaded Provider Provider[priority=10, className=org.apache.logging.log4j.core.impl.Log4jContextFactory, url=jar:file:/home/mikael/Dev/Java/Java%20Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/lib/log4j-core-2.7.jar!/META-INF/log4j-provider.properties, classLoader=ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
]
DEBUG StatusLogger Using ShutdownCallbackRegistry class org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry
DEBUG StatusLogger Using the servlet context name "CurrencyRegistry".
DEBUG StatusLogger getConfigURI found [log4j2.xml] in servletContext at [log4j2.xml]
DEBUG StatusLogger Took 0.087752 seconds to load 192 plugins from ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
DEBUG StatusLogger PluginManager 'Converter' found 41 plugins
DEBUG StatusLogger Starting OutputStreamManager SYSTEM_OUT.false.false-1
DEBUG StatusLogger PluginManager 'ConfigurationFactory' found 4 plugins
DEBUG StatusLogger Missing dependencies for Yaml support
DEBUG StatusLogger Missing dependencies for Json support
DEBUG StatusLogger Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@7dea68f1
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger File not found in file system or classpath: log4j2.xml
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
class loader.
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger File not found in file system or classpath: log4j2.xml
TRACE StatusLogger Trying to find [log4j2-testCurrencyRegistry.properties] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
<---MORE OF THESE TESTS TO FIND THE CONFIG FILE NONE OF THEM FINDS THE FILE--->
TRACE StatusLogger Trying to find [log4j2.xml] using ClassLoader.getSystemResource().
ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
将 log4j2.xml 文件移动到 src 文件夹后，它现在被 log4j2 拾取。我仍然收到一些警告。
log4j:WARN No appenders could be found for logger (org.jose4j.jwa.AlgorithmFactoryFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
我正在使用使用 SLF4J 进行日志记录的 Bitbuckets JWT 库，它需要使用
桥接到 log4j2 <dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.0.2</version>
</dependency>
移动文件后，Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE 的输出如下所示。现在看起来它能够在 /WEB-INF/classes 中找到文件，即使该文件在 src 下也是如此。不知道为什么。
DEBUG StatusLogger Log4jServletContainerInitializer starting up Log4j in Servlet 3.0+ environment.
DEBUG StatusLogger Loaded Provider Provider[priority=10, className=org.apache.logging.log4j.core.impl.Log4jContextFactory, url=jar:file:/home/mikael/Dev/Java/Java%20Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/lib/log4j-core-2.7.jar!/META-INF/log4j-provider.properties, classLoader=ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
]
DEBUG StatusLogger Using ShutdownCallbackRegistry class org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry
DEBUG StatusLogger Using the servlet context name "CurrencyRegistry".
DEBUG StatusLogger getConfigURI found [log4j2.xml] in servletContext at [log4j2.xml]
DEBUG StatusLogger Took 0.097889 seconds to load 192 plugins from ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
DEBUG StatusLogger PluginManager 'Converter' found 41 plugins
DEBUG StatusLogger Starting OutputStreamManager SYSTEM_OUT.false.false-1
DEBUG StatusLogger PluginManager 'ConfigurationFactory' found 4 plugins
DEBUG StatusLogger Missing dependencies for Yaml support
DEBUG StatusLogger Missing dependencies for Json support
DEBUG StatusLogger Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@2f824a06
TRACE StatusLogger Trying to find [log4j2.xml] using context class loader ParallelWebappClassLoader
context: ROOT
delegate: false
----------> Parent Classloader:
java.net.URLClassLoader@4629104a
.
2017-01-18 11:01:06,589 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting LoggerContext[name=CurrencyRegistry] from configuration at log4j2.xml
2017-01-18 11:01:06,590 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting LoggerContext[name=CurrencyRegistry, org.apache.logging.log4j.core.LoggerContext@77feb3ee] with configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]...
2017-01-18 11:01:06,596 RMI TCP Connection(2)-127.0.0.1 DEBUG Shutdown hook enabled. Registering a new one.
2017-01-18 11:01:06,598 RMI TCP Connection(2)-127.0.0.1 DEBUG Initializing configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]
2017-01-18 11:01:06,610 RMI TCP Connection(2)-127.0.0.1 DEBUG Installed script engines
2017-01-18 11:01:07,234 RMI TCP Connection(2)-127.0.0.1 DEBUG Oracle Nashorn Version: 1.8.0_111, Language: ECMAScript, Threading: Not Thread Safe, Compile: true, Names: {nashorn, Nashorn, js, JS, JavaScript, javascript, ECMAScript, ecmascript}
2017-01-18 11:01:07,235 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Core' found 108 plugins
2017-01-18 11:01:07,235 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Level' found 0 plugins
2017-01-18 11:01:07,241 RMI TCP Connection(2)-127.0.0.1 DEBUG Log4j2 ConfigurationScheduler: No scheduled items
2017-01-18 11:01:07,242 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Lookup' found 14 plugins
2017-01-18 11:01:07,245 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout].
2017-01-18 11:01:07,258 RMI TCP Connection(2)-127.0.0.1 TRACE TypeConverterRegistry initializing.
2017-01-18 11:01:07,259 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'TypeConverter' found 23 plugins
2017-01-18 11:01:07,281 RMI TCP Connection(2)-127.0.0.1 DEBUG PatternLayout$Builder(pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n", PatternSelector=null, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Replace=null, charset="null", alwaysWriteExceptions="null", noConsoleNoAnsi="null", header="null", footer="null")
2017-01-18 11:01:07,282 RMI TCP Connection(2)-127.0.0.1 DEBUG PluginManager 'Converter' found 41 plugins
2017-01-18 11:01:07,283 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.ConsoleAppender].
2017-01-18 11:01:07,296 RMI TCP Connection(2)-127.0.0.1 DEBUG ConsoleAppender$Builder(target="SYSTEM_OUT", follow="null", direct="null", bufferedIo="null", bufferSize="null", immediateFlush="null", ignoreExceptions="null", PatternLayout(%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n), name="Console", Filter=null)
2017-01-18 11:01:07,297 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting OutputStreamManager SYSTEM_OUT.false.false
2017-01-18 11:01:07,297 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout].
2017-01-18 11:01:07,299 RMI TCP Connection(2)-127.0.0.1 DEBUG PatternLayout$Builder(pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n", PatternSelector=null, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Replace=null, charset="null", alwaysWriteExceptions="null", noConsoleNoAnsi="null", header="null", footer="null")
2017-01-18 11:01:07,318 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.FileAppender].
2017-01-18 11:01:07,322 RMI TCP Connection(2)-127.0.0.1 DEBUG FileAppender$Builder(fileName="/home/mikael/Dev/Software/Tomcat/logs/all.log", append="null", locking="null", advertise="null", advertiseUri="null", createOnDemand="null", Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), bufferedIo="null", bufferSize="null", immediateFlush="null", ignoreExceptions="null", PatternLayout(%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n), name="MyFile", Filter=null)
2017-01-18 11:01:07,326 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting FileManager /home/mikael/Dev/Software/Tomcat/logs/all.log
2017-01-18 11:01:07,326 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=appenders, class=org.apache.logging.log4j.core.config.AppendersPlugin].
2017-01-18 11:01:07,327 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenders(={Console, MyFile})
2017-01-18 11:01:07,328 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef].
2017-01-18 11:01:07,333 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenderRef(ref="Console", level="null", Filter=null)
2017-01-18 11:01:07,334 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef].
2017-01-18 11:01:07,334 RMI TCP Connection(2)-127.0.0.1 DEBUG createAppenderRef(ref="MyFile", level="null", Filter=null)
2017-01-18 11:01:07,335 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=root, class=org.apache.logging.log4j.core.config.LoggerConfig$RootLogger].
2017-01-18 11:01:07,337 RMI TCP Connection(2)-127.0.0.1 DEBUG createLogger(additivity="null", level="DEBUG", includeLocation="null", ={Console, MyFile}, ={}, Configuration(/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml), Filter=null)
2017-01-18 11:01:07,342 RMI TCP Connection(2)-127.0.0.1 DEBUG Building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin].
2017-01-18 11:01:07,343 RMI TCP Connection(2)-127.0.0.1 DEBUG createLoggers(={root})
2017-01-18 11:01:07,345 RMI TCP Connection(2)-127.0.0.1 DEBUG Configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml] initialized
2017-01-18 11:01:07,345 RMI TCP Connection(2)-127.0.0.1 DEBUG Starting configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml]
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 DEBUG Started configuration XmlConfiguration[location=/home/mikael/Dev/Java/Java Programs/CurrencyRegistry/target/CurrencyRegistry/WEB-INF/classes/log4j2.xml] OK.
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 TRACE Stopping org.apache.logging.log4j.core.config.DefaultConfiguration@31af9852...
2017-01-18 11:01:07,346 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration notified 1 ReliabilityStrategies that config will be stopped.
2017-01-18 11:01:07,347 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopping root LoggerConfig.
2017-01-18 11:01:07,347 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration notifying ReliabilityStrategies that appenders will be stopped.
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopping remaining Appenders.
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 DEBUG Shutting down OutputStreamManager SYSTEM_OUT.false.false-1
2017-01-18 11:01:07,348 RMI TCP Connection(2)-127.0.0.1 DEBUG Shut down OutputStreamManager SYSTEM_OUT.false.false-1, all resources released: true
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration stopped 1 remaining Appenders.
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 TRACE DefaultConfiguration cleaning Appenders from 1 LoggerConfigs.
2017-01-18 11:01:07,349 RMI TCP Connection(2)-127.0.0.1 DEBUG Stopped org.apache.logging.log4j.core.config.DefaultConfiguration@31af9852 OK
2017-01-18 11:01:07,352 RMI TCP Connection(2)-127.0.0.1 TRACE Reregistering MBeans after reconfigure. Selector=org.apache.logging.log4j.core.selector.ClassLoaderContextSelector@3b475abf
2017-01-18 11:01:07,352 RMI TCP Connection(2)-127.0.0.1 TRACE Reregistering context (1/1): 'CurrencyRegistry' org.apache.logging.log4j.core.LoggerContext@77feb3ee
我不知道为什么配置文件在WEB-INF文件夹中时它不起作用。也许是我的文件夹结构不适用于 log4j2 如何定位配置文件。我也不明白为什么我把配置文件移到src.
/WEB-INF/classes下的配置文件
我相信指定的路径是相对于 Web 应用程序类路径的根目录的，因此：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>/WEB-INF/classes/log4j2.xml</param-value>
</context-param>
仅当 WEB-INF/classes/WEB-INF/classes/log4j2.xml 存在时才会被发现。由于在您的示例中 log4j2.xml 文件位于类路径的根目录中，因此以下配置应该足够了：
<context-param>
<param-name>log4jConfiguration</param-name>
<param-value>log4j2.xml</param-value>
</context-param>
您可以通过设置系统属性 -Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE来debug配置。
log4j:WARN 消息不是由 Log4j2 生成的。只有当类路径中某处有旧的 Log4j 1.2.x jar 文件时，您才会看到这些消息。
IntelliJ 将 src 中的所有资源复制到类路径 (WEB-INF/classes)。在构建过程中，它可能首先清理目标目录，因此它删除了您手动复制到那里的所有文件。所以不要手动将文件放入 classes，你只是在与 IDE 战斗。标准设置是遵循Maven目录布局，即将配置文件放在resources目录下。这个目录需要添加到类路径中。请参阅 IntelliJ 帮助以将文件夹指定为资源文件夹。