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我有一个OSGi应用程序，它可以从命令行启动并正常运行。然而，在生产环境中，这个应用程序必须从用C编写的小程序启动。这个程序检查许可证，执行其他的东西，并用我的应用程序使用JNI启动Java虚拟机。就这样，我从log4j的有奇怪的错误和休眠（我已经启用了-verbose：类JVM标志）：OSGi和JNI的类加载问题
[Loaded org.apache.log4j.Appender from reference:file:/opt/dc/lib/log4j-1.2.15.jar]
[Loaded org.apache.log4j.Appender from file:/opt/dc/lib/log4j-1.2.15.jar]
...
[Loaded org.apache.log4j.RollingFileAppender from file:/opt/dc/lib/log4j-1.2.15.jar]
log4j:ERROR A "org.apache.log4j.RollingFileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
log4j:ERROR [[email protected]] whereas object of type
log4j:ERROR "org.apache.log4j.RollingFileAppender" was loaded by [[email protected]].
log4j:ERROR Could not instantiate appender named "ROLLINGFILE".
...
[Loaded org.dom4j.DocumentFactory from reference:file:/opt/dc/lib/dom4j-1.6.1.jar]
...
[Loaded org.dom4j.DocumentFactory from file:/opt/dc/lib/dom4j-1.6.1.jar]
...
java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
at org.dom4j.DocumentFactory.getInstance(DocumentFactory.java:97)
at org.dom4j.io.DOMReader.<init>(DOMReader.java:38)
at org.hibernate.util.XMLHelper.createDOMReader(XMLHelper.java:69)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1615)
at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:1218)
为什么这些类加载两次？为什么他们中的一些从Felix加载，一些是从Java classloader加载的？我怀疑某些本地代码在OSGi应用程序启动之前调用了java（例如日志记录），并且这些加载的类以某种方式重复使用导致ClassCastExceptions - 我该如何证明或反驳这一点？