java compiler level does not match the version of the installed …

java compiler level does not match the version of the installed ……

java compiler level does not match the version of the installed java project facet。

说明eclipse的project facet中的java版本和你项目的不同,那么只要右键项目,找到Project Facet,把java的版本改成你匹配的。

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http://mp870601.blog.163.com/blog/static/136757453201031511483378/