Maven M2Eclipse 插件不工作
Maven M2Eclipse plugin not working
您好，我有一个奇怪的问题，我自己无法解决。我正在尝试在最新 Spring 工具套件中使用 Maven。我让它在我的笔记本电脑上运行没有任何问题，但它在我的电脑上不起作用 (windows 7)。在两者上，我都有相同版本的 STS、Maven 和其他插件，如 GWT 等。
问题是 PC 上的 maven 有连接问题（无法更新中央索引|https://repo.maven.apache.org/maven2）——这是我之前看到的消息，不幸的是我现在无法重现它，它不断尝试更新但是即使等待 2 小时后也没有任何反应（笔记本电脑在 eclipse 启动后几秒钟内更新）两台计算机使用相同的路由器、相同的网络、相同的连接类型 wifi。我禁用了所有防火墙等
第二个问题是我想使用GWT-maven-plugin来启动项目。 Eclipse 在添加原型时没有问题，但是当我尝试使用此原型实际设置 Maven 项目时，错误日志中出现此错误：
下载原型时出错 org.codehaus.mojo:gwt-maven-plugin:2.7.0
堆栈：
java.lang.reflect.InvocationTargetException
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:420)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1002)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage.loadArchetypeDescriptor(MavenProjectWizardArchetypeParametersPage.java:400)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage.setVisible(MavenProjectWizardArchetypeParametersPage.java:561)
at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1229)
at org.eclipse.jface.wizard.WizardDialog.access(WizardDialog.java:1208)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1197)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1194)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypePage.open(MavenProjectWizardArchetypePage.java:465)
at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:854)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:851)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1168)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1275)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272)
at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.ui.internal.actions.NewWizardShortcutAction.run(NewWizardShortcutAction.java:136)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
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:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
Caused by: java.lang.NullPointerException
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.closeZipFile(DefaultArchetypeArtifactManager.java:584)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:196)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:209)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:186)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:1)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1355)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.getRequiredProperties(ArchetypeManager.java:183)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage$RequiredPropertiesLoader.run(MavenProjectWizardArchetypeParametersPage.java:457)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Root exception:
java.lang.NullPointerException
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.closeZipFile(DefaultArchetypeArtifactManager.java:584)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:196)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:209)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:186)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:1)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1355)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.getRequiredProperties(ArchetypeManager.java:183)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage$RequiredPropertiesLoader.run(MavenProjectWizardArchetypeParametersPage.java:457)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
我已经尝试清理 maven cashe、项目、临时文件，从一开始就设置 STS 我不知道为什么它不起作用。我不使用代理等。我的笔记本电脑上有类似的配置，并且运行良好。
尽管 Maven / Guide to Mirror Settings 声明：
The official Maven 2 repository is at http://repo.maven.apache.org/maven2 hosted in the US, or http://uk.maven.org/maven2 hosted in the UK.
它实际上是 https://repo1.maven.org/maven2/ 重定向到它。因此，通过使用实际的 URL.
来避免重定向
您好，我有一个奇怪的问题，我自己无法解决。我正在尝试在最新 Spring 工具套件中使用 Maven。我让它在我的笔记本电脑上运行没有任何问题，但它在我的电脑上不起作用 (windows 7)。在两者上，我都有相同版本的 STS、Maven 和其他插件，如 GWT 等。
问题是 PC 上的 maven 有连接问题（无法更新中央索引|https://repo.maven.apache.org/maven2）——这是我之前看到的消息，不幸的是我现在无法重现它，它不断尝试更新但是即使等待 2 小时后也没有任何反应（笔记本电脑在 eclipse 启动后几秒钟内更新）两台计算机使用相同的路由器、相同的网络、相同的连接类型 wifi。我禁用了所有防火墙等
第二个问题是我想使用GWT-maven-plugin来启动项目。 Eclipse 在添加原型时没有问题，但是当我尝试使用此原型实际设置 Maven 项目时，错误日志中出现此错误：
下载原型时出错 org.codehaus.mojo:gwt-maven-plugin:2.7.0
堆栈：
java.lang.reflect.InvocationTargetException
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:420)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1002)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage.loadArchetypeDescriptor(MavenProjectWizardArchetypeParametersPage.java:400)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage.setVisible(MavenProjectWizardArchetypeParametersPage.java:561)
at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1229)
at org.eclipse.jface.wizard.WizardDialog.access(WizardDialog.java:1208)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1197)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1194)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypePage.open(MavenProjectWizardArchetypePage.java:465)
at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:854)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:851)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1168)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1275)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272)
at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.ui.internal.actions.NewWizardShortcutAction.run(NewWizardShortcutAction.java:136)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
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:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
Caused by: java.lang.NullPointerException
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.closeZipFile(DefaultArchetypeArtifactManager.java:584)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:196)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:209)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:186)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:1)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1355)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.getRequiredProperties(ArchetypeManager.java:183)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage$RequiredPropertiesLoader.run(MavenProjectWizardArchetypeParametersPage.java:457)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Root exception:
java.lang.NullPointerException
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.closeZipFile(DefaultArchetypeArtifactManager.java:584)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:196)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isFileSetArchetype(DefaultArchetypeArtifactManager.java:209)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:186)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.call(ArchetypeManager.java:1)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1355)
at org.eclipse.m2e.core.internal.archetype.ArchetypeManager.getRequiredProperties(ArchetypeManager.java:183)
at org.eclipse.m2e.core.ui.internal.wizards.MavenProjectWizardArchetypeParametersPage$RequiredPropertiesLoader.run(MavenProjectWizardArchetypeParametersPage.java:457)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
我已经尝试清理 maven cashe、项目、临时文件，从一开始就设置 STS 我不知道为什么它不起作用。我不使用代理等。我的笔记本电脑上有类似的配置，并且运行良好。
尽管 Maven / Guide to Mirror Settings 声明：
The official Maven 2 repository is at
http://repo.maven.apache.org/maven2hosted in the US, orhttp://uk.maven.org/maven2hosted in the UK.
它实际上是 https://repo1.maven.org/maven2/ 重定向到它。因此，通过使用实际的 URL.
来避免重定向