An error was reported when mac intellij idea imported the maven project.

Let"s talk about configuration first. Mac version is mac os high sierra
jdk version is 1.9
maven version is picture ![][1]

Mar.04,2021

sun.misc.BASE64Decoder is in rt.jar. Check whether there is this jar package class in jdk9 jre/lib. For the time being, you haven't used jdk9.


java 9. Just change it to java8.

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