導(dǎo)航

轉(zhuǎn)：http://blog.csdn.net/shuangzixing520/article/details/35225105

今天打開Myeclipse10的時(shí)候，發(fā)現(xiàn)server窗口出現(xiàn)一堆問題，問題如標(biāo)題，然后下方出現(xiàn)了一堆java.lang.NullPointerException的問題。

java.lang.NullPointerException
    at 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)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)

這個(gè)問題的出現(xiàn)是在啟動(dòng)myeclipse之后出現(xiàn)的，這時(shí)還沒有啟動(dòng)tomcat，因此可以排除tomcat中項(xiàng)目代碼問題。應(yīng)該是myeclipse在初始化工作空間workspace 的時(shí)候

出的問題。

仔細(xì)看下錯(cuò)誤發(fā)現(xiàn)有一條 at com.genuitec.eclipse.ast.deploy.core.Deployment.這個(gè)錯(cuò)誤，于是到工作空間下面的D:\Workspaces\.metadata\.plugins\org.eclipse.core.runtime\.settings目錄下面找到了名稱為at com.genuitec.eclipse.ast.deploy的prefs文件，打開文件一開，哈哈，原來里面都是原來的一些項(xiàng)目信息，怪不得會(huì)報(bào)java.lang.NullPointerException錯(cuò)誤呢。果斷將此文件刪除，重啟myeclipse10問題解決