ext in buildscript can not be recognised by Gradle Kotlin DSL

Question

In these days, I am trying to write some codes to experience the Spring reactive features and kotlin extension in Spring 5, and I also prepared a gradle Kotlin DSL build.gradle

Answer 1

There is a new possibility with Kotlin we can use:

object DependencyVersions {
    const val JETTY_VERSION = "9.4.12.v20180830"
}

dependencies{
    implementation("org.eclipse.jetty:jettyserver:${DependencyVersions.JETTY_VERSION}")
}

Here, DependencyVersions is a name I chose. You can choose another name, like "MyProjectVariables". This is a way to avoid using the extra or ext properties.