一段时间没部署web项目了，今天部署时突然报错，遂看下怎么解决。
java.lang.NullPointerExceptionat com.genuitec.eclipse.ast.deploy.core.Deployment.<init>(Unknown Source)at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.<init>(Unknown Source)at com.genuitec.eclipse.ast.deploy.core.WebDeployment.<init>(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.<init>(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.<init>(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)
仔细看下控制台，显然有些之前的项目信息提示，应该是有残存的项目找不着？
然后找到下面的文件，打开看信息有问题，果断删掉，重新打开MyEclipse。
