gradle 6.x kotlin spring-boot jar 发布失败，需要 gradle-kotlin-dsl 中的解决方法答案

【问题标题】：gradle 6.x kotlin spring-boot jar publish fails, workaround in gradle-kotlin-dsl neededgradle 6.x kotlin spring-boot jar 发布失败，需要 gradle-kotlin-dsl 中的解决方法
【发布时间】：2020-06-09 14:12:41
【问题描述】：

gradle 6.x release notes 告诉我们 boot-jars 的 maven-publishing 不起作用，因为 spring-boot 插件禁用了默认的 jar 任务。

一种解决方法是告诉 Gradle 要上传什么。如果要上传 bootJar，则需要配置传出配置来执行此操作：

configurations {
   [apiElements, runtimeElements].each {
       it.outgoing.artifacts.removeIf { it.buildDependencies.getDependencies(null).contains(jar) }
       it.outgoing.artifact(bootJar)
   }
}

不幸的是，我所有将其转换为 gradle-kotlin-dsl 的尝试都失败了：


configurations {
   listOf(apiElements, runtimeElements).forEach {
       it.outgoing.artifacts.removeIf { it.buildDependencies.getDependencies(null).contains(jar) }
       it.outgoing.artifact(bootJar)
   }
}

* What went wrong:
Script compilation errors:

it.outgoing.artifacts.removeAll { it.buildDependencies.getDependencies(null).contains(jar) }
                                                                             ^ Out-projected type 'MutableSet<CapturedType(out (org.gradle.api.Task..org.gradle.api.Task?))>' prohibits the use of 'public abstract fun contains(element: E): Boolean defined in kotlin.collections.MutableSet'

it.outgoing.artifacts.removeAll { it.buildDependencies.getDependencies(null).contains(jar) }
                                                                                      ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch:
                                                                                                             public val TaskContainer.jar: TaskProvider<Jar> defined in org.gradle.kotlin.dsl
it.outgoing.artifact(bootJar)
                     ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: public val TaskContainer.bootJar: TaskProvider<BootJar> defined in org.gradle.kotlin.dsl

关于如何在 Gradle Kotlin DSL 中执行此常规解决方法的任何想法？

【问题讨论】：

标签： gradle kotlin gradle-kotlin-dsl spring-boot-gradle-plugin maven-publish

【解决方案1】：

jar 和 bootJar 似乎是 Gradle 任务。您可以像这样在 Kotlin DSL 中获得对任务的引用：

configurations {
   listOf(apiElements, runtimeElements).forEach {
       // Method #1
       val jar by tasks
       it.outgoing.artifacts.removeIf { it.buildDependencies.getDependencies(null).contains(jar) }

       // Method #2
       it.outgoing.artifact(tasks.bootJar)
   }
}

【讨论】：