Cannot upgrade/downgrade to Dynamic Web Module 3.0 facet. It is incompatibile with already installed
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maven项目报错 Cannot upgrade/downgrade to Dynamic Web Module 3.0 facet. It is incompatibile with already installed facets: Java 1.5. Please modify project configuration.
找了很多网上的解决方法都没解决
有的修改.setting文件里面的东西 有的修改 web.xml里面的东西 还有向pom.xml中添加
废话不多说 针对这个问题先上图在上解决方法
解决： 项目右键-----属性-------project facts ---找到 java 修改为1.7 即可
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