解决MyEclipse10.7部署报错抛空指针异常问题的方法

先对问题进行描述：

（1）在MyEclipse Servers视图在MyEclipse 10.7.0在某些情况下，可能无法打开。 试图打开视图将导致NPE将被记录。

Could not create the view: An unexpected exception was thrown.  

java.lang.NullPointerException  
at com.genuitec.eclipse.ast.deploy.core.Deployment.(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.WebDeployment.(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.Deployment.create(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.loadFromPreferences(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.init(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.getDefault(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.ui.ServerTreeViewer$ServerTreeContentProvider.inputChanged(Unknown Source)  
at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:276)  
at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1690)  
at com.genuitec.eclipse.ast.deploy.core.ui.ServerTreeViewer.(Unknown Source)  
at com.genuitec.eclipse.ast.deploy.core.ui.ServerView.createPartControl(Unknown Source)  
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)  
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)  
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)  
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)  
at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:534)  
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)  
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)  
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)  
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)  
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)  
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:662)  
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:570)  
at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568)  

如下所示：

（2）如果出现了上述的错误按照如下的3个步骤解决：
1、首先关闭MyEclipse工作空间。

2、然后删除工作空间下的 “/.metadata/.plugins/org.eclipse.core.runtime/.settings/com.genuitec.eclipse.ast.deploy.core.prefs”

这个文件。在这个文件中存储了一些部署项目的信息。删了这个部署的项目的信息就没有错误了。

3、重启启动MyEclipse即可解决了。 可爱的猫猫又出现了！