一开始以为是外国网站访问不了，后来就换成了https://start.aliyun.com/ ，但还是报这个错误。
后来想想这个问题之前解决，应该是JDK版本的问题。
JAVA_HOME配置的JDK11，后来给改成了JDK8，然后就出现了这个问题。
还原之后问题消失了。
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