Type Java compiler level does not match the version of the installed Java project facet.項目內容沒錯但是項目上報...

1、Window->Show View->Problems 2、在項目上右鍵properties->project Facets->修改右側的version  保持一致 3、window->preferences->Java->Compiler->設置右側的Compiler compliance level 4、window->preferences->java->Installed JREs->

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