Workarounds for Eclpse Java Project inconsistent with Tomcat JDK version

Recently, when Tomcat (jdk1.7) added a project in Eclipse, the project was not added to the bug that the JDK (Project jdk1.8) version was inconsistent. Here's my fix it process:

Select Item Press ALT + ENTER

One, choose to replace the JDK as follows

　　

Second, choose Java compiler

　　

Three, choose project facets, but I am puzzled, here Java version can not replace!!!! Baidu later, we note that the Java icon has a small lock, so it is not allowed to modify ...

　　

At this time we need to find the project home directory, open the. Settings folder under the Org.eclipse.wst.common.project.facet.core.xml file, modify the Red box section or directly delete and then reset project Facets Done!

Workarounds for Eclpse Java Project inconsistent with Tomcat JDK version