log4j2.xml 已加载但未应用 [JVM 参数]

Question

我正在尝试使用 spring 批处理、spring mvc 和 spring 引导创建批处理。我正在使用 log4j2 进行日志记录。

我的目标是加载一个外部 log4j2.xml 配置文件，这要感谢像这样的 JVM 参数

-Dlog4j.configurationFile=file://C:\{path}\Workspace\demo-indexeur\config\log4j2.xml

Spring 启动检测我的文件（我在控制台中没有错误）并加载它但不应用我放在文件中的配置。

这是我的配置文件加载的调试：

2015-05-06 15:36:53,279 DEBUG Starting configuration XmlConfiguration[location=C:\{path}\Workspace\demo-indexeur\config\log4j2.xml]
2015-05-06 15:36:53,279 DEBUG PluginManager 'Core' found 69 plugins
2015-05-06 15:36:53,279 DEBUG PluginManager 'Level' found 0 plugins
2015-05-06 15:36:53,279 DEBUG PluginManager 'Lookup' found 10 plugins
2015-05-06 15:36:53,279 DEBUG Building Plugin[name=layout, class=org.apache.logging.log4j.core.layout.PatternLayout]. Searching for builder factory method...
2015-05-06 15:36:53,279 DEBUG Found builder factory method [newBuilder]: public static org.apache.logging.log4j.core.layout.PatternLayout$Builder org.apache.logging.log4j.core.layout.PatternLayout.newBuilder().
2015-05-06 15:36:53,289 DEBUG TypeConverterRegistry initializing.
2015-05-06 15:36:53,289 DEBUG PluginManager 'TypeConverter' found 21 plugins
2015-05-06 15:36:53,299 DEBUG Calling build() on class class org.apache.logging.log4j.core.layout.PatternLayout$Builder for element PatternLayout with params(pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n", Configuration(C:\{path}\Workspace\demo-indexeur\config\log4j2.xml), null, charset="null", alwaysWriteExceptions="null", noConsoleNoAnsi="null", header="null", footer="null")
2015-05-06 15:36:53,299 DEBUG PluginManager 'Converter' found 33 plugins
2015-05-06 15:36:53,299 DEBUG Built Plugin[name=layout] OK from builder factory method.
2015-05-06 15:36:53,299 DEBUG Building Plugin[name=appender, class=org.apache.logging.log4j.core.appender.ConsoleAppender]. Searching for builder factory method...
2015-05-06 15:36:53,299 INFO Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory.
2015-05-06 15:36:53,299 DEBUG PluginManager 'Converter' found 33 plugins
2015-05-06 15:36:53,299 DEBUG Jansi is not installed, cannot find org.fusesource.jansi.WindowsAnsiOutputStream
2015-05-06 15:36:53,299 DEBUG Found builder factory method [newBuilder]: public static org.apache.logging.log4j.core.appender.ConsoleAppender$Builder org.apache.logging.log4j.core.appender.ConsoleAppender.newBuilder().
2015-05-06 15:36:53,299 DEBUG No PluginVisitorStrategy found on annotation [interface org.apache.logging.log4j.core.config.plugins.validation.constraints.Required]. Ignoring.
2015-05-06 15:36:53,299 DEBUG Encountered type [org.apache.logging.log4j.core.layout.PatternLayout] which can only be checked for null.
2015-05-06 15:36:53,309 DEBUG No PluginVisitorStrategy found on annotation [interface org.apache.logging.log4j.core.config.plugins.validation.constraints.Required]. Ignoring.
2015-05-06 15:36:53,309 DEBUG Encountered type [org.apache.logging.log4j.core.appender.ConsoleAppender$Target] which can only be checked for null.
2015-05-06 15:36:53,309 DEBUG No PluginVisitorStrategy found on annotation [interface org.apache.logging.log4j.core.config.plugins.validation.constraints.Required]. Ignoring.
2015-05-06 15:36:53,309 DEBUG Calling build() on class class org.apache.logging.log4j.core.appender.ConsoleAppender$Builder for element Console with params(PatternLayout(%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n), null, target="SYSTEM_OUT", name="Console", follow="null", ignoreExceptions="null")
2015-05-06 15:36:53,309 DEBUG Jansi is not installed, cannot find org.fusesource.jansi.WindowsAnsiOutputStream
2015-05-06 15:36:53,309 DEBUG Built Plugin[name=appender] OK from builder factory method.
2015-05-06 15:36:53,309 DEBUG Building Plugin[name=appenders, class=org.apache.logging.log4j.core.config.AppendersPlugin]. Searching for builder factory method...
2015-05-06 15:36:53,309 DEBUG No builder factory method found in class org.apache.logging.log4j.core.config.AppendersPlugin. Going to try finding a factory method instead.
2015-05-06 15:36:53,309 DEBUG Still building Plugin[name=appenders, class=org.apache.logging.log4j.core.config.AppendersPlugin]. Searching for factory method...
2015-05-06 15:36:53,309 DEBUG Found factory method [createAppenders]: public static java.util.concurrent.ConcurrentMap org.apache.logging.log4j.core.config.AppendersPlugin.createAppenders(org.apache.logging.log4j.core.Appender[]).
2015-05-06 15:36:53,309 DEBUG Calling createAppenders on class org.apache.logging.log4j.core.config.AppendersPlugin for element Appenders with params(={Console})
2015-05-06 15:36:53,309 DEBUG Built Plugin[name=appenders] OK from factory method.
2015-05-06 15:36:53,309 DEBUG Building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. Searching for builder factory method...
2015-05-06 15:36:53,309 DEBUG No builder factory method found in class org.apache.logging.log4j.core.config.AppenderRef. Going to try finding a factory method instead.
2015-05-06 15:36:53,309 DEBUG Still building Plugin[name=AppenderRef, class=org.apache.logging.log4j.core.config.AppenderRef]. Searching for factory method...
2015-05-06 15:36:53,309 DEBUG Found factory method [createAppenderRef]: public static org.apache.logging.log4j.core.config.AppenderRef org.apache.logging.log4j.core.config.AppenderRef.createAppenderRef(java.lang.String,org.apache.logging.log4j.Level,org.apache.logging.log4j.core.Filter).
2015-05-06 15:36:53,309 DEBUG Calling createAppenderRef on class org.apache.logging.log4j.core.config.AppenderRef for element AppenderRef with params(ref="Console", level="null", null)
2015-05-06 15:36:53,309 DEBUG Built Plugin[name=AppenderRef] OK from factory method.
2015-05-06 15:36:53,309 DEBUG Building Plugin[name=root, class=org.apache.logging.log4j.core.config.LoggerConfig$RootLogger]. Searching for builder factory method...
2015-05-06 15:36:53,309 DEBUG No builder factory method found in class org.apache.logging.log4j.core.config.LoggerConfig$RootLogger. Going to try finding a factory method instead.
2015-05-06 15:36:53,309 DEBUG Still building Plugin[name=root, class=org.apache.logging.log4j.core.config.LoggerConfig$RootLogger]. Searching for factory method...
2015-05-06 15:36:53,309 DEBUG Found factory method [createLogger]: public static org.apache.logging.log4j.core.config.LoggerConfig org.apache.logging.log4j.core.config.LoggerConfig$RootLogger.createLogger(java.lang.String,org.apache.logging.log4j.Level,java.lang.String,org.apache.logging.log4j.core.config.AppenderRef[],org.apache.logging.log4j.core.config.Property[],org.apache.logging.log4j.core.config.Configuration,org.apache.logging.log4j.core.Filter).
2015-05-06 15:36:53,319 DEBUG Calling createLogger on class org.apache.logging.log4j.core.config.LoggerConfig$RootLogger for element Root with params(additivity="null", level="ERROR", includeLocation="null", ={Console}, ={}, Configuration(C:\{path}\Workspace\demo-indexeur\config\log4j2.xml), null)
2015-05-06 15:36:53,319 DEBUG Built Plugin[name=root] OK from factory method.
2015-05-06 15:36:53,319 DEBUG Building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin]. Searching for builder factory method...
2015-05-06 15:36:53,319 DEBUG No builder factory method found in class org.apache.logging.log4j.core.config.LoggersPlugin. Going to try finding a factory method instead.
2015-05-06 15:36:53,319 DEBUG Still building Plugin[name=loggers, class=org.apache.logging.log4j.core.config.LoggersPlugin]. Searching for factory method...
2015-05-06 15:36:53,319 DEBUG Found factory method [createLoggers]: public static org.apache.logging.log4j.core.config.Loggers org.apache.logging.log4j.core.config.LoggersPlugin.createLoggers(org.apache.logging.log4j.core.config.LoggerConfig[]).
2015-05-06 15:36:53,319 DEBUG Calling createLoggers on class org.apache.logging.log4j.core.config.LoggersPlugin for element Loggers with params(={root})
2015-05-06 15:36:53,319 DEBUG Built Plugin[name=loggers] OK from factory method.
2015-05-06 15:36:53,319 DEBUG Started configuration XmlConfiguration[location=C:\{path}\Workspace\demo-indexeur\config\log4j2.xml] OK.
2015-05-06 15:36:53,319 TRACE Stopping org.apache.logging.log4j.core.config.DefaultConfiguration@5b87edb3...
2015-05-06 15:36:53,319 TRACE AbstractConfiguration stopped 0 AsyncLoggerConfigs.
2015-05-06 15:36:53,319 TRACE AbstractConfiguration stopped 0 AsyncAppenders.
2015-05-06 15:36:53,319 TRACE AbstractConfiguration stopped 1 Appenders.
2015-05-06 15:36:53,319 TRACE AbstractConfiguration stopped 0 Loggers.
2015-05-06 15:36:53,319 DEBUG Stopped org.apache.logging.log4j.core.config.DefaultConfiguration@5bc79274 OK
2015-05-06 15:36:53,319 DEBUG Registering MBean org.apache.logging.log4j2:type=sun.misc.Launcher$AppClassLoader@c387f44
2015-05-06 15:36:53,329 DEBUG Registering MBean org.apache.logging.log4j2:type=sun.misc.Launcher$AppClassLoader@c387f44,component=StatusLogger
2015-05-06 15:36:53,329 DEBUG Registering MBean org.apache.logging.log4j2:type=sun.misc.Launcher$AppClassLoader@c387f44,component=ContextSelector
2015-05-06 15:36:53,329 DEBUG Registering MBean org.apache.logging.log4j2:type=sun.misc.Launcher$AppClassLoader@c387f44,component=Loggers,name=
2015-05-06 15:36:53,329 DEBUG Registering MBean org.apache.logging.log4j2:type=sun.misc.Launcher$AppClassLoader@c387f44,component=Appenders,name=Console
2015-05-06 15:36:53,329 DEBUG Reconfiguration complete for context[name=sun.misc.Launcher$AppClassLoader@c387f44] at null (org.apache.logging.log4j.core.LoggerContext@72b6cbeb) with optional ClassLoader: null
2015-05-06 15:36:53,329 DEBUG Shutdown hook enabled. Registering a new one.
2015-05-06 15:36:53,329 DEBUG LoggerContext[name=sun.misc.Launcher$AppClassLoader@c387f44, org.apache.logging.log4j.core.LoggerContext@7fac633a] started OK.
2015-05-06 15:36:53,489 DEBUG Using configurationFactory org.apache.logging.log4j.core.config.ConfigurationFactory$Factory@6973bf95
2015-05-06 15:36:53,489 INFO Log4j appears to be running in a Servlet environment, but there's no log4j-web module available. If you want better web container support, please add the log4j-web JAR to your web archive or server lib directory.

当我将文件移入 "src/main/resources" 时，它工作得很好，但当我尝试将文件外部化时，它却没有。

这是我的 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>
  </Appenders>
  <Loggers>
    <Root level="error">
      <AppenderRef ref="Console"/>
    </Root>
  </Loggers>
</Configuration>

这是我的依赖项：

<!--    Spring Batch -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-batch</artifactId>
        <exclusions>
<!--            Suppression de SLF4J -->
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

<!--    Spring web-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
<!--            Suppression de SLF4J -->
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

<!--    Utilisation de LOG4J2 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

有人能告诉我为什么在外部化文件时它不起作用吗？感谢您的帮助。

Answer 1

尝试以下格式之一：

-Dlog4j.configurationFile=/Workspace/demo-indexeur/config/log4j2.xml
-Dlog4j.configurationFile=file://c:/Workspace/demo-indexeur/config/log4j2.xml
-Dlog4j.configurationFile=file:///c:/Workspace/demo-indexeur/config/log4j2.xml

如果你运行一个jar文件，这个参数必须放在-jar application.jar之前。

Answer 2

Log4j has the ability to automatically configure itself during initialization. Log4j will inspect the "log4j.configurationFile" system property and, if set, will attempt to load the configuration.

这就是为什么我的文件被检测到并没有错误地加载但未被 spring 引导使用的原因。

我忘了告诉 spring boot 在哪里可以找到日志记录配置文件，为此，我必须在 spring boot 的 application.properties 中添加 :

logging.config= # location of logging config file

之后，一切正常。

Answer 3

我想我们只需要在 application.properties
中添加属性例如我们想把 log4j2.xml 放在名为 config 的 jar 的子目录中。所以，在 application.properties 中我们有：

logging.config=classpath:config/log4j2.xml

Answer 4

logging.config=classpath:log4j2.xml 如果 log4j2.xml 文件放置在 Maven 项目结构的默认资源文件夹中，则可以使用.

在 Spring BOOT 1.3.5

上测试

Answer 5

tomcat JVM 参数将覆盖 logging.config 属性。尝试通过静态块来实现。

static {
   // ...get the log4j2.xml uri
   org.apache.logging.log4j.LogManager.getContext(null, false, uri);
}

log4j2.xml 已加载但未应用 [JVM 参数]

log4j2.xml loaded but not applied [JVM argument]

java

xml

spring

spring-batch

spring-boot