Eclipse PDE：java.lang.NoClassDefFoundError：org/eclipse/core/Resources/ResourcesPlugin
我有一个Eclipse应用程序，在执行时会出现以下错误-
java.lang.NoClassDefFoundError: org/eclipse/core/resources/ResourcesPlugin
at org.eclipse.emf.ecore.plugin.EcorePlugin.getWorkspaceRoot(EcorePlugin.java:1149)
at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.getWorkspaceRoot(PlatformResourceURIHandlerImpl.java:488)
at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.<clinit>(PlatformResourceURIHandlerImpl.java:456)
at org.eclipse.emf.ecore.resource.URIHandler.<clinit>(URIHandler.java:51)
at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.<init>(ExtensibleURIConverterImpl.java:138)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getURIConverter(ResourceSetImpl.java:499)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:369)
at com.act21.mamba.modelserver.codec.MambaXMICodec.decode(MambaXMICodec.java:94)
at com.act21.mamba.modelserver.codec.MambaXMICodec.decode(MambaXMICodec.java:65)
at com.act21.mamba.modelserver.codec.MambaXMICodec.decode(MambaXMICodec.java:57)
at com.act21.mamba.modelserver.MambaModelServerClient.decode(MambaModelServerClient.java:59)
at org.eclipse.emfcloud.modelserver.client.ModelServerClient.lambda$4(ModelServerClient.java:116)
at java.base/java.util.Optional.flatMap(Optional.java:294)
at org.eclipse.emfcloud.modelserver.client.ModelServerClient.lambda$3(ModelServerClient.java:116)
at java.base/java.util.function.Function.lambda$andThen$1(Function.java:88)
at java.base/java.util.function.Function.lambda$andThen$1(Function.java:88)
at org.eclipse.emfcloud.modelserver.client.Response.body(Response.java:39)
at com.act21.mamba.common.ModelServerClientUtil.loadResource(ModelServerClientUtil.java:25)
at com.act21.mamba.common.ModelServerClientUtil.loadResource(ModelServerClientUtil.java:34)
at com.act21.mamba.codegen.application.Application.generate(Application.java:85)
at com.act21.mamba.codegen.application.Application.start(Application.java:58)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (28).
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:126)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 34 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:835)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
at org.eclipse.osgi.container.Module.doStart(Module.java:605)
at org.eclipse.osgi.container.Module.start(Module.java:468)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
... 41 more
Caused by: java.lang.NullPointerException
at org.eclipse.core.internal.resources.CharsetDeltaJob.startup(CharsetDeltaJob.java:212)
at org.eclipse.core.internal.resources.CharsetManager.startup(CharsetManager.java:505)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2456)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2210)
at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:489)
at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
... 48 more
我在插件和amp；产品配置的两个清单中都包含了org.eclipse.core.Resources-
1.插件清单-
Require-Bundle: org.apache.log4j;bundle-version="1.2.15",
org.apache.commons.io;bundle-version="[2.6.0,3.0.0)",
com.google.inject;bundle-version="3.0.0",
com.google.guava,
org.eclipse.emf.common,
org.eclipse.emf.ecore.xmi,
org.eclipse.emfcloud.modelserver.client;bundle-version="0.7.0",
org.eclipse.emfcloud.modelserver.common;bundle-version="0.7.0",
org.eclipse.emfcloud.modelserver.edit;bundle-version="0.7.0",
org.eclipse.emfcloud.modelserver.emf;bundle-version="0.7.0",
org.eclipse.emfcloud.modelserver.lib;bundle-version="0.7.0",
org.slf4j.api;bundle-version="1.7.30",
org.eclipse.glsp.graph;bundle-version="0.9.0",
org.eclipse.emf.edit;bundle-version="2.16.0",
org.eclipse.emf.transaction;bundle-version="1.9.1",
com.fasterxml.jackson.core.jackson-annotations;bundle-version="2.10.3",
com.fasterxml.jackson.core.jackson-core;bundle-version="2.10.3",
com.fasterxml.jackson.core.jackson-databind;bundle-version="2.10.3",
com.act21.mamba.model;bundle-version="1.0.0",
javax.inject;bundle-version="1.0.0",
org.emfjson.jackson;bundle-version="1.2.0",
javax.servlet;bundle-version="3.1.0",
org.eclipse.jetty.util;bundle-version="9.4.37",
org.eclipse.jetty.http;bundle-version="9.4.37",
org.eclipse.jetty.io;bundle-version="9.4.37",
org.eclipse.jetty.security;bundle-version="9.4.37",
org.eclipse.jetty.server;bundle-version="9.4.37",
org.eclipse.jetty.servlet;bundle-version="9.4.37",
org.eclipse.jetty.websocket.api;bundle-version="9.4.37",
org.eclipse.jetty.websocket.common;bundle-version="9.4.37",
org.eclipse.jetty.websocket.server;bundle-version="9.4.37",
org.eclipse.jetty.websocket.servlet;bundle-version="9.4.37",
org.eclipse.core.resources;bundle-version="3.13.800"
2.产品配置-
<?xml version="1.0" encoding="UTF-8"?>
<?pde version="3.5"?>
<product name="Code gen" uid="com.act21.mamba.product.codegen" id="com.act21.mamba.codegen.application.product" application="com.act21.mamba.codegen.application.application" version="0.1.0" useFeatures="false" includeLaunchers="true">
<configIni use="default">
</configIni>
<launcherArgs>
<programArgs>-consoleLog
</programArgs>
<vmArgsMac>-XstartOnFirstThread -Dorg.eclipse.swt.internal.carbon.smallFonts
</vmArgsMac>
</launcherArgs>
<windowImages/>
<launcher>
<win useIco="false">
<bmp/>
</win>
</launcher>
<vm>
<linux include="false">org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11</linux>
<windows include="false">org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11</windows>
</vm>
<plugins>
<plugin id="ch.qos.logback.classic"/>
<plugin id="ch.qos.logback.core"/>
<plugin id="ch.qos.logback.slf4j" fragment="true"/>
<plugin id="com.act21.mamba.codegen"/>
<plugin id="com.act21.mamba.codegen.application"/>
<plugin id="com.act21.mamba.common"/>
<plugin id="com.act21.mamba.model"/>
<plugin id="com.act21.mamba.modelserver"/>
<plugin id="com.fasterxml.jackson.core.jackson-annotations"/>
<plugin id="com.fasterxml.jackson.core.jackson-core"/>
<plugin id="com.fasterxml.jackson.core.jackson-databind"/>
<plugin id="com.google.gson"/>
<plugin id="com.google.guava"/>
<plugin id="com.google.inject"/>
<plugin id="com.google.inject.multibindings" fragment="true"/>
<plugin id="com.ibm.icu"/>
<plugin id="javax.inject"/>
<plugin id="javax.servlet"/>
<plugin id="org.apache.commons.io"/>
<plugin id="org.apache.commons.lang"/>
<plugin id="org.apache.log4j"/>
<plugin id="org.eclipse.core.contenttype"/>
<plugin id="org.eclipse.core.expressions"/>
<plugin id="org.eclipse.core.filesystem"/>
<plugin id="org.eclipse.core.filesystem.win32.x86_64" fragment="true"/>
<plugin id="org.eclipse.core.jobs"/>
<plugin id="org.eclipse.core.resources"/>
<plugin id="org.eclipse.core.resources.win32.x86_64" fragment="true"/>
<plugin id="org.eclipse.core.runtime"/>
<plugin id="org.eclipse.emf.common"/>
<plugin id="org.eclipse.emf.ecore"/>
<plugin id="org.eclipse.emf.ecore.change"/>
<plugin id="org.eclipse.emf.ecore.xmi"/>
<plugin id="org.eclipse.emf.edit"/>
<plugin id="org.eclipse.emf.transaction"/>
<plugin id="org.eclipse.emf.validation"/>
<plugin id="org.eclipse.emfcloud.modelserver.client"/>
<plugin id="org.eclipse.emfcloud.modelserver.common"/>
<plugin id="org.eclipse.emfcloud.modelserver.edit"/>
<plugin id="org.eclipse.emfcloud.modelserver.emf"/>
<plugin id="org.eclipse.emfcloud.modelserver.lib"/>
<plugin id="org.eclipse.equinox.app"/>
<plugin id="org.eclipse.equinox.common"/>
<plugin id="org.eclipse.equinox.preferences"/>
<plugin id="org.eclipse.equinox.registry"/>
<plugin id="org.eclipse.glsp.graph"/>
<plugin id="org.eclipse.jetty.http"/>
<plugin id="org.eclipse.jetty.io"/>
<plugin id="org.eclipse.jetty.security"/>
<plugin id="org.eclipse.jetty.server"/>
<plugin id="org.eclipse.jetty.servlet"/>
<plugin id="org.eclipse.jetty.util"/>
<plugin id="org.eclipse.jetty.util.ajax"/>
<plugin id="org.eclipse.jetty.websocket.api"/>
<plugin id="org.eclipse.jetty.websocket.common"/>
<plugin id="org.eclipse.jetty.websocket.server"/>
<plugin id="org.eclipse.jetty.websocket.servlet"/>
<plugin id="org.eclipse.osgi"/>
<plugin id="org.eclipse.osgi.compatibility.state" fragment="true"/>
<plugin id="org.eclipse.osgi.services"/>
<plugin id="org.eclipse.osgi.util"/>
<plugin id="org.eclipse.xtend.lib"/>
<plugin id="org.eclipse.xtend.lib.macro"/>
<plugin id="org.eclipse.xtext.logging" fragment="true"/>
<plugin id="org.eclipse.xtext.xbase.lib"/>
<plugin id="org.emfjson.jackson"/>
<plugin id="org.slf4j.api"/>
</plugins>
<configurations>
<plugin id="org.eclipse.core.runtime" autoStart="true" startLevel="0" />
<plugin id="org.eclipse.equinox.common" autoStart="true" startLevel="2" />
<plugin id="org.eclipse.osgi" autoStart="true" startLevel="-1" />
</configurations>
<preferencesInfo>
<targetfile overwrite="false"/>
</preferencesInfo>
<cssInfo>
</cssInfo>
</product>
我不确定为什么它仍然找不到org.eclipse.core.resource ces.Resources类。
解决方案
日志显示正在找到资源插件，但其插件激活器在尝试获取IContentTypeManager时遇到空指针异常。
内容类型管理器是使用OSGi声明性服务提供的，但您尚未包括处理此问题的org.apache.felix.scr。
因此，您至少需要包括org.apache.felix.scr并在<configurations>部分开始：
<plugin id="org.apache.felix.scr" autoStart="true" startLevel="2" />
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