Question

我从包中开始这个例外：

java.lang.NoClassDefFoundError: gnu/io/SerialPortEventListener

我的捆绑包正在使用此捆绑包：[1] enocean库 enocean库[1]正在使用rxtx库，我在项目中将其作为包添加，rxtx包含未找到的类：＆＃34; SerialPortEventListener＆＃34;

EnOcean库[1]将包gnu.io声明为导入包，并且包rxtx正在导出包，包版本是相同的。

我发现如果该类依赖于另一个无法找到的类，则会出现错误NoClassDefFoundError，但是SerialPortEventListener是一个来自EventListener的接口。

无法找出昼夜平分点无法找到它的原因。

!ENTRY org.eclipse.equinox.ds 4 0 2015-06-22 12:55:02.616
!MESSAGE [SCR] Exception while activating instance org.eclipse.kura.binding.enocean.EnOcean@79d49d of component org.eclipse.kura.binding.enocean
!STACK 0
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:235)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:347)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
        at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
        at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
        at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
        at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
        at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
        at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run(Executor.java:70)
Caused by: java.lang.NoClassDefFoundError: gnu/io/SerialPortEventListener
        at org.eclipse.kura.binding.enocean.EnOcean.activate(EnOcean.java:27)
        ... 15 more
Caused by: java.lang.ClassNotFoundException: gnu.io.SerialPortEventListener
        at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
        at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 16 more
Root exception:
java.lang.NoClassDefFoundError: gnu/io/SerialPortEventListener
        at org.eclipse.kura.binding.enocean.EnOcean.activate(EnOcean.java:27)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:235)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:347)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
        at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
        at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
        at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
        at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
        at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
        at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run(Executor.java:70)
Caused by: java.lang.ClassNotFoundException: gnu.io.SerialPortEventListener
        at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
        at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 16 more

更新：我尝试了一种新方法，我将EnOcean库的源文件复制到我的包中，这些来源使用了库[2]思考

我将库换成了一个捆绑包（使用eclipse：从退出的档案创建捆绑包）然后我启动了它（捆绑包启动没有错误）

我从包中导入了所需的包，但是启动我的包会导致相同的错误，但在Reflections包中

我启动了捆绑番石榴，因为它是导致错误的那个但没有成功，我添加了反射所需的包guava [3]的包作为导入的包并且再次没有成功:( 这是错误：

Root exception:
java.lang.NoClassDefFoundError: com/google/common/collect/Lists
        at org.reflections.util.FilterBuilder.<init>(FilterBuilder.java:24)
        at org.reflections.scanners.SubTypesScanner.<init>(SubTypesScanner.java:19)
        at org.reflections.scanners.SubTypesScanner.<init>(SubTypesScanner.java:12)
        at org.reflections.util.ConfigurationBuilder.<init>(ConfigurationBuilder.java:53)
        at EnOcean.EEP.EEPRegistry.<init>(EEPRegistry.java:26)
        at EnOcean.EEP.EEPRegistry.getInstance(EEPRegistry.java:53)
        at EnOceanLibrary.communication.EnJConnection.initCommon(EnJConnection.java:205)
        at EnOceanLibrary.communication.EnJConnection.<init>(EnJConnection.java:154)
        at org.eclipse.kura.binding.enocean.EnOcean.activate(EnOcean.java:31)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:235)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
        at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:347)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
        at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
        at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
        at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
        at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
        at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
        at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
        at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run(Executor.java:70)

提前感谢您的帮助！

[1] https://github.com/dog-gateway/enj-library

[2] http://mvnrepository.com/artifact/org.reflections/reflections/0.9.9-RC2

[3] http://mvnrepository.com/artifact/com.google.guava/guava/15.0

Answer 1

异常似乎来自org.eclipse.kura.binding.enocean捆绑，而不是来自EnJ-Library捆绑。

org.eclipse.kura.binding.enocean导入包gnu.io吗？

Answer 2

@Neil Barlett：感谢您的回复！

最后，我在libs目录中添加了reflections.jar，并将其添加到Bundle类路径中。我在我的捆绑包中导入了com.google.common.collect。这次它有效，不确定它是否是最佳解决方案，但似乎当我使用eclipse将reflections.jar包装在一个捆绑包中时，它无法正常工作。

OSGI包：NoClassDefFoundError

2 个答案: