我尝试使用带有 Gelf Appender 的 Apache Karaf 连接到 Log4J,但我只是得到 ClassNotFoundException。
我按照Karaf Docs部分“使用您自己的附加程序”的说明进行操作:
我添加了一个文件夹并从 Maven 存储库system/org/graylog2/gelfj/1.1.12/
复制到该文件夹中。gelfj-1.1.12.jar
我将此行添加到etc/startup.properties
:
org/graylog2/gelfj/1.1.12/org.graylog2.gelfj-1.1.12.jar=7
org/ops4j/pax/logging/pax-logging-api/1.7.0/pax-logging-api-1.7.0.jar=8
(第二行已经存在,我按照说明“将新的片段包添加到 pax-logging-service 包之前的列表中”。)
我也添加到文件etc/org.ops4j.pax.logging.cfg
# Root logger
log4j.rootLogger=INFO,out,graylog2,osgi:*
...
log4j.appender.graylog2=org.graylog2.log.GelfAppender
log4j.appender.graylog2.graylogHost=foo.bar.de
log4j.appender.graylog2.facility=myall
log4j.appender.graylog2.Threshold=INFO
如果我开始 karaf 我只会得到这个例外:
/opt/apache-karaf-2.3.11/bin/karaf server
karaf: JAVA_HOME not set; results may vary
log4j:ERROR Could not instantiate class [org.graylog2.log.GelfAppender].
java.lang.ClassNotFoundException: org.graylog2.log.GelfAppender not found by org.ops4j.pax.logging.pax-logging-service [4]
at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1460)
at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:72)
at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1843)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:191)
at org.apache.log4j.helpers.Loader.loadClass(Loader.java:198)
at org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:326)
at org.apache.log4j.helpers.OptionConverter.instantiateByKey(OptionConverter.java:123)
at org.apache.log4j.PaxLoggingConfigurator.parseAppender(PaxLoggingConfigurator.java:97)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:735)
at org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:639)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:504)
at org.apache.log4j.PaxLoggingConfigurator.doConfigure(PaxLoggingConfigurator.java:72)
at org.ops4j.pax.logging.service.internal.PaxLoggingServiceImpl.updated(PaxLoggingServiceImpl.java:214)
at org.ops4j.pax.logging.service.internal.PaxLoggingServiceImpl$1ManagedPaxLoggingService.updated(PaxLoggingServiceImpl.java:362)
at org.apache.felix.cm.impl.helper.ManagedServiceTracker.updateService(ManagedServiceTracker.java:148)
at org.apache.felix.cm.impl.helper.ManagedServiceTracker.provideConfiguration(ManagedServiceTracker.java:81)
at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.provide(ConfigurationManager.java:1436)
at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.run(ConfigurationManager.java:1392)
at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:103)
at java.lang.Thread.run(Thread.java:701)
log4j:ERROR Could not instantiate appender named "graylog2".
我也尝试了这个指令,结果相同。
感谢帮助。