Maven项目中报错 :Cannot upgrade/downgrade to Dynamic Web Module 3.0 facet. It is incompatibile with already installed facets: Java 1.6. Please modify project configuration.
解决:项目右键-->properties-->Project Facets-->Java-->修改成1.7或更高版本
Maven项目中报错 :Cannot upgrade/downgrade to Dynamic Web Module 3.0 facet. It is incompatibile with already installed facets: Java 1.6. Please modify project configuration.
解决:项目右键-->properties-->Project Facets-->Java-->修改成1.7或更高版本