下載地址：https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html下載需要登錄，此處提供迅雷下載鏈接，
https://download.oracle.com/otn/java/jdk/8u221-b11/230deb18db3e4014bb8e3e8324f81b43/jdk-8u221-windows-x64.exe?AuthParam=1563589007_663a1f07ff53f2baa3925f340f025ad7