更换jdk版本时报以下问题：
Description Resource Path Location Type
Java compiler level does not match the version of the installed Java project facet. edw_report Unknown Faceted Project Problem (Java Version Mismatch)
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eclipse的
jdk版本几处设置
Java compiler level does not match the version of the installed Java project facet
原文：http://www.cnblogs.com/renrsh/p/6878406.html