最近在myeclipse裏面的工程裝了maven，不小心點了disable maven nature後來想恢復，找不到conver to maven project
解決辦法：（Eclipse裏也一樣！）
Preferences > General > Capabilities > Advanced > MyEclipse Standard Tools > check the option WTP (Deprecated).
Apply and close the wizard. You will now be able to see on the context menu of project Configure > Convert to Maven Project.