An internal error occurred during:"Launching .. on tomcat 6.x

Question

myeclipse导入一个web工程文件，部署的时候出现An internal error occurred during:"Launching .. on tomcat 6.x 这个问题，detail显示：An internal error occurred during: "Launching ide100cn on Tomcat 6.x".
java.lang.NullPointerException
有解决方法吗？

Answer 1

空指针异常！看一下你的Web内容肯定一处地方给赋空值了！！应该不是Tomcat出错的原因！

Answer 2

java.lang.NullPointerException
at com.genuitec.eclipse.ast.deploy.core.packaging.WarPackager.deployJarsOnClasspath(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.packaging.DefaultPackagerStrategy.deployJarsOnClasspath(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.packaging.PackageUtils.deployJarsOnClasspath(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.WebDeployment.ć(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.WebDeployment.doProjectTypeSpecificPostResyncAll(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.resyncAll(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.deployAsExplodedArchive(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.deploy(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.performStdRedeploy(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.redeploy(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.ui.debug.RunOnServerLaunchConfigurationDelegate.ā(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.ui.debug.RunOnServerLaunchConfigurationDelegate.launch(Unknown Source)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:866)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1069)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

Answer 3

原来我我的classpath有问题，只要按problem那里提示的错误，把classpath里面的东西删除就可以了