在接口内运行java类

您好，我正在处理一个eclipse RCP项目，我需要从我的ViewPart中的一个类运行一个函数，通过将实例添加到按钮选择的侦听器，我正在函数中使用Gate NLP，因此在运行该项目后，我会遇到很多异常，这是其中的一部分：

org.eclipse.e4.core.di.InjectionException: java.lang.NoClassDefFoundError: gate/util/GateException
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:877)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:857)
    at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:119)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:333)
    at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:254)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:102)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:71)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:53)
    at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:949)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:633)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$6.run(PartRenderingEngine.java:526)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    ....
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
    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.launcher.Main.invokeFramework(Main.java:636)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Caused by: java.lang.NoClassDefFoundError: gate/util/GateException
    at segmentation.View.createPartControl(View.java:258)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:142)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.createPartControl(CompatibilityView.java:174)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:323)
    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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
    ... 84 more
Caused by: java.lang.ClassNotFoundException: gate.util.GateException cannot be found by Segmentation_1.0.0.qualifier
    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:358)
    ... 93 more

这就是我如何使用这门课：

btnSegmenter.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            SegClass s = new SegClass();

            if ((!(text_2.getText().isEmpty())) && (!(text_1.getText().isEmpty())))
                    {
                    try {
                        s.Segmenter(text_3.getText(), text_2.getText());
                    } catch (GateException | IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                    }
                    }


        }
    });

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所以请帮我找到另一种方式来管理我的班级谢谢

您是否在插件运行时添加了与“分段”相关的jar或文件。

---

Plugin.xml->Run time->class path->add->

看一看

NoClassDefFoundError

总是关于编译时存在但在运行时丢失的类。什么意思是编译时存在但在运行时丢失？实际上，我在一个简单的java项目上测试了代码，然后我创建了一个类的实例，并在按下按钮后尝试在那里运行。您能告诉我问题出在哪里吗？类加载器在运行时找不到包含该类的JAR或目录。换句话说，确保

gate.util.GateException

在类路径上。打开你的plugin.xml文件plugin.xml->运行时->类路径->添加->我发现这非常有用，谢谢你的帮助，每个人都使用Import>文件系统将jar文件导入插件项目，比如在/lib目录中。使用“添加…”将JAR添加到plugin.xml>Runtime选项卡的classpath部分。使用“新建…”添加“.”库返回（当然没有引号）。确保二进制构建在plugin.xml>build选项卡上导出新的jar文件。保存项目时，使用上下文菜单>PDE工具>更新类路径将JAR正确添加到eclipse项目类路径。我用过这个，但我有一个问题，我是否必须添加新的…“添加”。“每个罐子的库返回？？