在这里，我们将给大家分享关于Eclipse：Anerrorhasoccurred.Seeerrorlogformoredetails.java.lang.NullPointerException的知识
在这里，我们将给大家分享关于Eclipse：An error has occurred. See error log for more details. java.lang.NullPointerException的知识，同时也会涉及到如何更有效地An error has occurred. See error log for more details. java.lang.NullPointer、An error occurred during local report processing: report definition has an invalid target namespace、An internal error occurred during: "Add Deployment". java.lang.NullPointerException、An internal error occurred during: "reload maven project". java.lang.NullPointerExceptio的内容。
本文目录一览：- Eclipse：An error has occurred. See error log for more details. java.lang.NullPointerException
- An error has occurred. See error log for more details. java.lang.NullPointer
- An error occurred during local report processing: report definition has an invalid target namespace
- An internal error occurred during: "Add Deployment". java.lang.NullPointerException
- An internal error occurred during: "reload maven project". java.lang.NullPointerExceptio
Eclipse：An error has occurred. See error log for more details. java.lang.NullPointerException
问题描述
在使用 Eclipse Clean 项目时报错：An error has occurred. See error log for more details. java.lang.NullPointerException。猜测这应该是由于 Eclipse 没有正常关闭所导致的。
打开 Eclipse 的日志 \workspace\.metadata\.log 如下：
!ENTRY org.eclipse.jface 4 2 2019-04-25 15:42:06.381
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
at org.eclipse.jst.jee.ui.internal.navigator.web.WebAppProvider.getImage(WebAppProvider.java:99)
at org.eclipse.jst.jee.ui.internal.navigator.Web25LabelProvider.getImage(Web25LabelProvider.java:47)
at org.eclipse.ui.internal.navigator.NavigatorContentServiceLabelProvider.findImage(NavigatorContentServiceLabelProvider.java:197)
at org.eclipse.ui.internal.navigator.NavigatorContentServiceLabelProvider.getColumnImage(NavigatorContentServiceLabelProvider.java:105)
at org.eclipse.ui.internal.navigator.NavigatorContentServiceLabelProvider.getImage(NavigatorContentServiceLabelProvider.java:98)
at org.eclipse.ui.internal.navigator.NavigatorDecoratingLabelProvider$StyledLabelProviderAdapter.getImage(NavigatorDecoratingLabelProvider.java:59)
at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.getImage(DelegatingStyledCellLabelProvider.java:195)
at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.getImage(DecoratingStyledCellLabelProvider.java:173)
at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.update(DelegatingStyledCellLabelProvider.java:121)
at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.update(DecoratingStyledCellLabelProvider.java:136)
at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:154)
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:949)
at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:114)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1029)
at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:472)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2150)
at org.eclipse.jface.viewers.StructuredViewer.internalUpdate(StructuredViewer.java:2133)
at org.eclipse.jface.viewers.StructuredViewer.update(StructuredViewer.java:2071)
at org.eclipse.jface.viewers.ColumnViewer.update(ColumnViewer.java:540)
at org.eclipse.ui.navigator.CommonViewer.update(CommonViewer.java:535)
at org.eclipse.jface.viewers.StructuredViewer.update(StructuredViewer.java:2015)
at org.eclipse.jface.viewers.StructuredViewer.handleLabelProviderChanged(StructuredViewer.java:1182)
at org.eclipse.ui.navigator.CommonViewer.handleLabelProviderChanged(CommonViewer.java:235)
at org.eclipse.jface.viewers.ContentViewer$1.labelProviderChanged(ContentViewer.java:99)
at org.eclipse.jface.viewers.BaseLabelProvider$1.run(BaseLabelProvider.java:72)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.BaseLabelProvider.fireLabelProviderChanged(BaseLabelProvider.java:69)
at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider$1.labelProviderChanged(DecoratingStyledCellLabelProvider.java:78)
at org.eclipse.ui.internal.decorators.DecoratorManager$1.run(DecoratorManager.java:446)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.decorators.DecoratorManager.fireListener(DecoratorManager.java:443)
at org.eclipse.ui.internal.decorators.DecorationScheduler$3.runInUIThread(DecorationScheduler.java:536)
at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:97)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
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:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
解决方法
- 删除当前项目，注意不要把这个勾选上：Delete project contents on disk（cannot be undone）
- 重新导入项目，Project —> Clean... 一下工程就可以了
- 网上的一些方法
Try so start Eclipse from the console/terminal with the -clean option.
On Windows:
Eclipse.exe -clean
On Linux/Unix:
./eclipse -clean
or if Eclipse is in your PATH
eclipse -clean
This will clear your plug-ins cache, maybe it solves the issue.
An error has occurred. See error log for more details. java.lang.NullPointer
右键项目 -> run as -> maven clean
An error occurred during local report processing: report definition has an invalid target namespace
万恶的 An error occurred during local report processing 异常
出现这个异常有很多原因，下面介绍一下由于 VS 版本问题造成这样的异常：
The report definition has an invalid target namespace ''http://schemas.microsoft.com/sqlserver/reporting/2016/01/reportdefinition'' which cannot be upgraded.
当时修改 rdlc 报表出现了这个错误
当时是要新增一个 rdlc 报表模板，我就复制了一个原来的 rdlc 报表，在原有报表的基础上修改，之后保存完看报表代码发现报表的命名空间变了，从 2008 变到 2016，并且报表代码格式都变了，然后就疯狂报那个错。
解决办法：
将：<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2016/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
改为：<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
删除 ：
<ReportSection>
<ReportSections>
节点中间内容不要删除
</ReportSection>
</ReportSections>
删除：
<ReportParametersLayout>
里面的也全部删除
</ReportParametersLayout>
保存，就会恢复之前的格式。
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An internal error occurred during: "Add Deployment". java.lang.NullPointerException
<?xml version="1.0" encoding="UTF-8"?>
<project-module
type="WEB"
name="tbjm"
id="myeclipse.1373003135483"
context-root="/tbjm"
j2ee-spec="5.0"
archive="tbjm.war">
<attributes>
<attribute name="webrootdir" value="/src/main/webapp" />
</attributes>
</project-module> 上面是.mymetadata 部署一直报空指针 都还没运行啊怎么报空指针？
An internal error occurred during: "reload maven project". java.lang.NullPointerExceptio
An internal error occurred during: "reload maven project".java.lang.NullPointerExceptio
导入一个 Maven 项目，嫌弃慢删除了 eclipse 的进程，后面就跑不起来
关于Eclipse：An error has occurred. See error log for more details. java.lang.NullPointerException的问题就给大家分享到这里，感谢你花时间阅读本站内容，更多关于An error has occurred. See error log for more details. java.lang.NullPointer、An error occurred during local report processing: report definition has an invalid target namespace、An internal error occurred during: "Add Deployment". java.lang.NullPointerException、An internal error occurred during: "reload maven project". java.lang.NullPointerExceptio等相关知识的信息别忘了在本站进行查找喔。
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