У меня есть java-приложение, в которое встроен контейнер felix osgi. Java-приложение использует log4j 2.8.2.
Один из моих пакетов реализации osgi также использует log4j. Из-за этого я добавил jar-файлы log4j-api-2.8.2 и log4j-core-2.8.2 в систему osgi с помощью:
bundleContext.installBundle()
И запустите пакет с:
bundle.start()
Установка пакетов работает нормально. За исключением того, что запуск пакета «org.apache.felix.scr» вызывает исключение:
ERROR StatusLogger Unable to create custom ContextSelector. Falling back to default.
java.lang.ClassCastException: Cannot cast org.apache.logging.log4j.core.osgi.BundleContextSelector to
org.apache.logging.log4j.core.selector.ContextSelector
Я подозреваю, что это связано с тем, что Felix SCR пытается загрузить мой пакет реализации, который использует log4j. И потому что мое приложение (тот, который встраивает felix) использует log4j и, вероятно, ContextSelector. OSGI, вероятно, использует BundleContextSelector. Отсюда исключение.
Мне интересно, как я могу решить это?
Я уже пытался установить ContextSelector для своего приложения на osgi:
System.setProperty("Log4jContextSelector",
"org.apache.logging.log4j.core.osgi.BundleContextSelector")
Но тут не повезло. Я также попытался создать новый поток для настройки osgi/felix. У меня заканчиваются идеи.
В настоящее время я переключился с log4j на ведение журнала java для своего приложения. Мои пакеты реализации osgi могут без проблем использовать log4j таким образом.
Просто для справки здесь полная трассировка исключения:
ERROR StatusLogger Unable to create custom ContextSelector. Falling back to default.
java.lang.ClassCastException: Cannot cast org.apache.logging.log4j.core.osgi.BundleContextSelector to org.apache.logging.log4j.core.selector.ContextSelector
at java.lang.Class.cast(Class.java:3369)
at org.apache.logging.log4j.util.LoaderUtil.newCheckedInstanceOf(LoaderUtil.java:201)
at org.apache.logging.log4j.util.LoaderUtil.newCheckedInstanceOfProperty(LoaderUtil.java:226)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.createContextSelector(Log4jContextFactory.java:97)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.<init>(Log4jContextFactory.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:94)
at com.okwant.emap.impl.ui.UIImpl.<clinit>(UIImpl.java:18)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:237)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:109)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:906)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:879)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:749)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:675)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:430)
at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:657)
at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:341)
at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:390)
at org.apache.felix.scr.impl.Activator.access$200(Activator.java:54)
at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:265)
at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:254)
at org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:227)
at org.apache.felix.utils.extender.AbstractExtender.addingBundle(AbstractExtender.java:187)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)
at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)
at org.osgi.util.tracker.BundleTracker.open(BundleTracker.java:156)
at org.apache.felix.utils.extender.AbstractExtender.startTracking(AbstractExtender.java:150)
at org.apache.felix.utils.extender.AbstractExtender.doStart(AbstractExtender.java:142)
at org.apache.felix.scr.impl.Activator.doStart(Activator.java:172)
at org.apache.felix.utils.extender.AbstractExtender.start(AbstractExtender.java:114)
at org.apache.felix.scr.impl.Activator.restart(Activator.java:142)
at org.apache.felix.scr.impl.config.ScrConfigurationImpl.configure(ScrConfigurationImpl.java:196)
at org.apache.felix.scr.impl.config.ScrConfigurationImpl.start(ScrConfigurationImpl.java:117)
at org.apache.felix.scr.impl.Activator.start(Activator.java:110)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2238)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2144)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
at com.okwant.emap.client.HostActivator.installAndStartSystemBundles(HostActivator.java:82)
at com.okwant.emap.client.HostActivator.start(HostActivator.java:37)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix$SystemBundleActivator.start(Felix.java:4860)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix.init(Felix.java:844)
at org.apache.felix.framework.Felix.init(Felix.java:625)
at org.apache.felix.framework.Felix.start(Felix.java:963)
at com.okwant.emap.client.ClientOsgi.setupOsgi(ClientOsgi.java:55)
at com.okwant.emap.client.ClientFrame.doInit(ClientFrame.java:30)
at com.okwant.emap.client.ClientApp.<init>(ClientApp.java:21)
at com.okwant.emap.client.ClientApp.main(ClientApp.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
ERROR StatusLogger Unable to create custom ContextSelector. Falling back to default.
java.lang.ClassCastException: Cannot cast org.apache.logging.log4j.core.osgi.BundleContextSelector to org.apache.logging.log4j.core.selector.ContextSelector
at java.lang.Class.cast(Class.java:3369)
at org.apache.logging.log4j.util.LoaderUtil.newCheckedInstanceOf(LoaderUtil.java:201)
at org.apache.logging.log4j.util.LoaderUtil.newCheckedInstanceOfProperty(LoaderUtil.java:226)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.createContextSelector(Log4jContextFactory.java:97)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.<init>(Log4jContextFactory.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:94)
at com.okwant.emap.impl.ui.UIImpl.<clinit>(UIImpl.java:18)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:237)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:109)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:906)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:879)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:749)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:675)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:430)
at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:657)
at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:341)
at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:390)
at org.apache.felix.scr.impl.Activator.access$200(Activator.java:54)
at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:265)
at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:254)
at org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:227)
at org.apache.felix.utils.extender.AbstractExtender.addingBundle(AbstractExtender.java:187)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)
at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)
at org.osgi.util.tracker.BundleTracker.open(BundleTracker.java:156)
at org.apache.felix.utils.extender.AbstractExtender.startTracking(AbstractExtender.java:150)
at org.apache.felix.utils.extender.AbstractExtender.doStart(AbstractExtender.java:142)
at org.apache.felix.scr.impl.Activator.doStart(Activator.java:172)
at org.apache.felix.utils.extender.AbstractExtender.start(AbstractExtender.java:114)
at org.apache.felix.scr.impl.Activator.restart(Activator.java:142)
at org.apache.felix.scr.impl.config.ScrConfigurationImpl.configure(ScrConfigurationImpl.java:196)
at org.apache.felix.scr.impl.config.ScrConfigurationImpl.start(ScrConfigurationImpl.java:117)
at org.apache.felix.scr.impl.Activator.start(Activator.java:110)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2238)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2144)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
at com.okwant.emap.client.HostActivator.installAndStartSystemBundles(HostActivator.java:82)
at com.okwant.emap.client.HostActivator.start(HostActivator.java:37)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix$SystemBundleActivator.start(Felix.java:4860)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
at org.apache.felix.framework.Felix.init(Felix.java:844)
at org.apache.felix.framework.Felix.init(Felix.java:625)
at org.apache.felix.framework.Felix.start(Felix.java:963)
at com.okwant.emap.client.ClientOsgi.setupOsgi(ClientOsgi.java:55)
at com.okwant.emap.client.ClientFrame.doInit(ClientFrame.java:30)
at com.okwant.emap.client.ClientApp.<init>(ClientApp.java:21)
at com.okwant.emap.client.ClientApp.main(ClientApp.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)