mac eclipse Target runtime Apache Tomcat v7.0 is not defined

关于mac下eclipse报错：mac eclipse Target runtime Apache Tomcat v7.0 is not defined。

修改这个文件"工程名/.settings/org.eclipse.wst.common.project.facet.core.xml"下的runtime标签的name值,删除即可！

1.在eclipse显示seetings文件夹