Question

我正在尝试在新安装的Apache Felix容器中使用pax日志记录。安装了以下软件包：

    lb
START LEVEL 1
   ID|State      |Level|Name
    0|Active     |    0|System Bundle (5.0.0)
    1|Active     |    1|Apache Felix Bundle Repository (2.0.4)
    2|Active     |    1|Apache Felix Gogo Command (0.14.0)
    3|Active     |    1|Apache Felix Gogo Runtime (0.16.2)
    4|Active     |    1|Apache Felix Gogo Shell (0.10.0)
    6|Active     |    1|Apache Felix Declarative Services (1.6.0)
    7|Active     |    1|Apache Felix Web Management Console (3.1.2)
    8|Installed  |    1|Apache Felix Configuration Admin Service (1.2.4)
    9|Resolved   |    1|OSGi R4 Compendium Bundle (4.0.0)
   10|Resolved   |    1|Apache Felix Http Bundle (2.0.4)
   11|Installed  |    1|Apache Felix iPOJO WebConsole Plugins (1.6.0)
   12|Installed  |    1|Apache Felix iPOJO (1.8.0)
   13|Active     |    1|HTTP Service (1.0.1)
   14|Installed  |    1|Apache Felix Log Service (1.0.0)
   15|Resolved   |    1|Apache Felix Shell Service (1.4.2)
   26|Active     |    1|db_bundle (0.0.1.SNAPSHOT)
   33|Active     |    1|Loader (0.0.1.SNAPSHOT)
   39|Resolved   |    1|OPS4J Pax Logging - Service (1.8.3)
   40|Active     |    1|OPS4J Pax Logging - API (1.8.3)
   42|Resolved   |    1|OPS4J Pax Logging - Log4j v2 (1.8.3)

尝试启动软件包39（Pax Logging - Service）会导致：

g! felix:start 39
org.osgi.framework.BundleException: Activator start error in bundle org.ops4j.pax.logging.pax-logging-service [39].
    at org.apache.felix.framework.Felix.activateBundle(Felix.java:2270)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2138)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:977)
    at org.apache.felix.gogo.command.Basic.start(Basic.java:729)
    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:497)
    at org.apache.felix.gogo.runtime.Reflective.invoke(Reflective.java:137)
    at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:82)
    at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)
    at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)
    at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
    at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)
    at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)
    at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)
    at org.apache.felix.gogo.shell.Console.run(Console.java:62)
    at org.apache.felix.gogo.shell.Shell.console(Shell.java:203)
    at org.apache.felix.gogo.shell.Shell.gosh(Shell.java:128)
    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:497)
    at org.apache.felix.gogo.runtime.Reflective.invoke(Reflective.java:137)
    at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:82)
    at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)
    at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)
    at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
    at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)
    at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)
    at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)
    at org.apache.felix.gogo.shell.Activator.run(Activator.java:75)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: org/ops4j/pax/logging/EventAdminPoster
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
    at java.lang.Class.getConstructor0(Class.java:3075)
    at java.lang.Class.newInstance(Class.java:412)
    at org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4453)
    at org.apache.felix.framework.Felix.activateBundle(Felix.java:2215)
    ... 32 more
Caused by: java.lang.ClassNotFoundException: org.ops4j.pax.logging.EventAdminPoster not found by org.ops4j.pax.logging.pax-logging-api [29]
    at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1558)
    at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79)
    at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1998)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.apache.felix.framework.BundleWiringImpl.getClassByDelegation(BundleWiringImpl.java:1399)
    at org.apache.felix.framework.BundleWiringImpl.searchImports(BundleWiringImpl.java:1579)
    at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1509)
    at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79)
    at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1998)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 38 more
java.lang.NoClassDefFoundError: org/ops4j/pax/logging/EventAdminPoster

我手动检查了Pax Logging API包（pax-logging-api-1.8.3.jar） - 包含了文件org/ops4j/pax/logging/EventAdminPoster.class。我还检查了API包Manifest.mf中的(pax-logging-api-1.8.3.jar)。 "Export-Package"部分以Export-Package开头：

org.apache.avalon.framework.logger;用途：=＆＃34; org.apache.log ＆＃34 ;;版本=＆＃34; 4.3＆＃34 ;;提供商= paxlogging，org.apache.commons.logging;用途：=＆＃34;○ rg.osgi.framework，org.ops4j.pax.logging＆＃34 ;;版本=＆＃34; 1.1.1＆＃34 ;;提供商= paxlo gging ...

所以，我不知道为什么Pax Logging Service包的启动会引发ClassNotFoundException。我错过了什么？

注意：Bundle 26和33是一些测试包，我尝试通过pax日志记录使用log4j。

Answer 1

重启felix后问题解决了。现在可以启动Pax Logging Service捆绑包。

Pax Logging Service - 激活器启动错误

1 个答案: