老师，我按照你的方式，自己在github上下载了spring-framework-5.2.9.RELEASE，然后可以正常运行，但是如果把你的代码下载下来，直接导入idea中gradle就会报Build failed with an exception.具体如下：

FAILURE: Build failed with an exception.

* Where:
Build file 'D:\A_material\Ľ����\springframework5.2.0.RELEASE-master\springframework5.2.0.release\build.gradle' line: 320

* What went wrong:
A problem occurred evaluating root project 'spring'.
> Could not find implementation class 'org.springframework.build.compile.CompilerConventionsPlugin' for plugin 'org.springframework.build.compile' specified in jar:file:/D:/gradle_house/caches/jars-3/885f304aea2a44db562d4c238cf67f62/buildSrc.jar!/META-INF/gradle-plugins/org.springframework.build.compile.properties.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

CONFIGURE FAILED in 614ms

而且build.gradle文件好多虚线：

以前我也遇到过这种情况，那时我把gradle和这个工程的jdk都改成jdk8就解决了，但是你的这个工程我这样做解决不了，希望老师帮助一下。