【发布时间】：2018-02-12 18:45:35
【问题描述】：
我想将一个 OSGI 片段添加到一个包中，这里是“org.eclipse.equinox.http.jetty”，带有这样的 Manifest.mf：
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: JettyCustomize
Bundle-SymbolicName: com.company.st.console.jetty.customize
Bundle-Version: 1.0.0.qualifier
Bundle-Vendor: Company
Bundle-RequiredExecutionEnvironment: JavaSE-1.8
Fragment-Host: org.eclipse.equinox.http.jetty
不幸的是，我的代码需要在“org.eclipse.jetty.io”中定义的其他包中的代码。所以我将以下行添加到清单中：
Import-Package: org.eclipse.jetty.io
现在 - 在 Eclipse 中 - 代码编译。但是当我启动应用程序时，我得到以下异常（MyJettyCustomizer 是片段中的一个类，由片段主机“org.eclipse.equinox.http.jetty”中的代码每次反射使用）：
java.lang.ClassNotFoundException: com.company.st.console.jetty.customize.MyJettyCustomizer cannot be found by org.eclipse.equinox.http.jetty_3.4.0.v20170503-2025
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.eclipse.equinox.http.jetty.internal.HttpServerManager.createJettyCustomizer(HttpServerManager.java:232)
at org.eclipse.equinox.http.jetty.internal.HttpServerManager.updated(HttpServerManager.java:74)
at org.eclipse.equinox.http.jetty.internal.Activator.start(Activator.java:62)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:779)
at org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:772)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:729)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:933)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:309)
at org.eclipse.osgi.container.Module.doStart(Module.java:581)
at org.eclipse.osgi.container.Module.start(Module.java:449)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1628)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1608)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1579)
at org.eclipse.osgi.container.SystemModule.startWorker(SystemModule.java:264)
at org.eclipse.osgi.container.Module.doStart(Module.java:581)
at org.eclipse.osgi.container.Module.start(Module.java:449)
at org.eclipse.osgi.container.SystemModule.start(SystemModule.java:188)
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:383)
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:402)
at org.eclipse.osgi.launch.Equinox.start(Equinox.java:115)
at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:326)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:239)
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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
at org.eclipse.equinox.launcher.Main.main(Main.java:1472)
如果我从MyJettyCustomizer 中删除需要“org.eclipse.jetty.io”的代码并再次从清单中删除“Import-Package: org.eclipse.jetty.io”行，则不会出现异常运行时和类MyJettyCustomizer 已正确加载。
那么有没有可能我可以在 OSGI 片段中使用来自另一个包的代码？
【问题讨论】：
标签： java eclipse osgi osgi-fragment