Java compiler level does not match the version of the installed Java project facet. springmvc1 和 Target runtime Apache Tomcat v7.0 is not defined.

Java compiler level does not match the version of the installed Java project facet.springmvc1 ： 

Target runtime Apache Tomcat v7.0 is not defined.

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原文地址：https://www.cnblogs.com/fhtwins/p/3622353.html