Intellij Idea “用MySQL访问数据”Spring指南是开箱即用的？

参考https://spring.io/guides/gs/accessing-data-mysql/上的教程/指南，我下载了gs-accessing-data-mysql-main.zip。
该ZIP文件在以下子文件夹中包含两个项目：

初始（空）
complete（完成，每个教程，准备构建和运行）

使用最新的IntelliJ IDEA 2023.1.1，我打开了complete项目。它至少应该没有错误地构建，但是，相反，它发出了一连串的错误消息，我不知道如何修复它们：

A problem occurred configuring root project 'accessing-data-mysql'.
> Could not resolve all files for configuration ':classpath'.
   > Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.0.0.
     Required by:
         project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.0.0
      > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.0.0 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.4.2' but:
          - Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.0 declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')
          - Variant 'javadocElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.0 declares a runtime of a component, and its dependencies declared externally:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')
          - Variant 'mavenOptionalApiElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.0 declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')
          - Variant 'mavenOptionalRuntimeElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.0.0 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')
          - Variant 'runtimeElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.0 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')
          - Variant 'sourcesElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.0.0 declares a runtime of a component, and its dependencies declared externally:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.4.2')

* Try:
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

如果您下载gs-accessing-data-mysql-main.zip并重复我概述的几个步骤，您可以很容易地重现这个问题。
在同一个Build窗口中，在上述消息的下面，有一个对应的堆栈跟踪（太长，无法放入帖子）。
注意：我验证了项目是否正确设置为Java 17：

我有两个问题：
1.问题的根本原因是什么？
1.我该怎么解决这个问题？

我找到了根本原因并修复了它。为了其他人的利益（他们可能像我一样追逐自己的尾巴），我在这里发布我的发现。
1.根本原因是“Gradle构建系统”使用环境JAVA_HOME（Java 8），而不是使用我在IntelliJ的Project Structure〉Project Settings〉Module（Java 17）中配置的内容-尽管在IDE下运行。
1.修复方法是在IntelliJ设置中的另一个位置设置Java 17：File〉Settings〉Build, Execution, Deployment〉Gradle。

为了避免像我一样浪费宝贵的时间，在开发系统中安装一个且唯一的JDK/JRE版本是很好的。然而，当同时处理不同的项目和使用不同的工具（需要不同版本的Java）时，这并不总是可能的。
下面的命令可以帮助确定哪些java/javac安装在Windows开发环境中：

C:\>dir /s /n /b java.exe

C:\>dir /s /n /b javac.exe

Intellij Idea “用MySQL访问数据”Spring指南是开箱即用的？

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