问题1：Could not publish to the server. Cannot acquire J2EEFlexProjDeployable object for module MyFirstWebApp [EXPLODED on Tomcat v8.0 Server at localhost] Cannot acquire J2EEFlexProjDeployable object for module MyFirstWebApp [EXPLODED on Tomcat v8.0 Server at localhost]
我出现这个的原因是之前有创建项目，但是eclipse依然记录着项目，所以需要在eclipse中取消这个项目的记录
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