在MyEclipse中add struts capabilities为什么是灰色的

在MyEclipse中add struts capabilities灰色不可用的解决办法：
切换到java的导航试图，在项目的根目录下又个项目配置文件：".project"，打开后如下代码所示。
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CourseMS





com.genuitec.eclipse.j2eedt.core.WebClasspathBuilder




org.eclipse.jdt.core.javabuilder




com.genuitec.eclipse.j2eedt.core.J2EEProjectValidator




com.genuitec.eclipse.j2eedt.core.DeploymentDescriptorValidator




org.eclipse.wst.validation.validationbuilder




com.genuitec.eclipse.hibernate.HibernateBuilder





com.genuitec.eclipse.hibernate.hibernatenature
com.genuitec.eclipse.j2eedt.core.webnature
org.eclipse.jdt.core.javanature
org.eclipse.wst.jsdt.core.jsNature




CourseMS





com.genuitec.eclipse.j2eedt.core.WebClasspathBuilder




org.eclipse.jdt.core.javabuilder




com.genuitec.eclipse.j2eedt.core.J2EEProjectValidator




com.genuitec.eclipse.j2eedt.core.DeploymentDescriptorValidator




org.eclipse.wst.validation.validationbuilder




com.genuitec.eclipse.hibernate.HibernateBuilder





com.genuitec.eclipse.hibernate.hibernatenature
com.genuitec.eclipse.j2eedt.core.webnature
org.eclipse.jdt.core.javanature
org.eclipse.wst.jsdt.core.jsNature


一般在最下方有：

com.genuitec.eclipse.hibernate.HibernateBuilder




com.genuitec.eclipse.hibernate.HibernateBuilder



和
com.genuitec.eclipse.hibernate.hibernatenature
com.genuitec.eclipse.hibernate.hibernatenature
将这两段删除即可