一、场景分析
现在高版本的 IDEA,创建 Spring Boot 项目时常常会选不到 Java 8:

直接使用 Java 17 新建项目,又会报错:
Selected version of Java 17 is not supported by the project SDK '1.8'. Either choose a lower version of Java or set a higher version of the SDK.
To download additional SDKs, click the JDK drop-down.

二、解决方案
配置 Server URL,在弹出来的对话框中,输入

现在就可以选到 Java 8 愉快地玩耍了。
