Java库对Gradle平台的依赖性

问题描述

我们有几个通用库，它们使用java-library Gradle插件，并通过对它的BOM的平台依赖性来依赖Micronaut。这两个项目都使用Gradle 6.6.1，这是在撰写本文时最新的版本。

图书馆build.gradle

plugins {
    id "java-library"
}

repositories {
    mavenLocal()
    mavenCentral()
}

dependencies {

    annotationProcessor (
        platform("io.micronaut:micronaut-bom:$micronautVersion"),"io.micronaut:micronaut-inject-java"
    )

    implementation(
        platform("io.micronaut:micronaut-bom:$micronautVersion"),"io.micronaut:micronaut-inject"
    )

    testAnnotationProcessor(
        enforcedPlatform("io.micronaut:micronaut-bom:$micronautVersion"),"io.micronaut:micronaut-inject-java"
    )

    testImplementation(
        enforcedPlatform("io.micronaut:micronaut-bom:$micronautVersion"),"io.micronaut:micronaut-runtime","io.micronaut:micronaut-http-server-netty","io.micronaut:micronaut-http-client"
    )
}

当我尝试在应用程序中使用我的库时，该应用程序使用应用程序Gradle插件，并且对Micronaut的BOM有平台依赖性，我收到一条错误消息，说它无法解析该库使用的Micronaut BOM。但是它永远无法解决这种依赖性，因为它是BOM，而不是库。

应用程序build.gradle

plugins {
    id "application"
    id "java"
}

repositories {
    mavenLocal()
    mavenCentral()
}

dependencies {
    implementation(
        "my.group:library:${libraryVersion}",platform("io.micronaut:micronaut-bom:${micronautVersion}"),"io.micronaut:micronaut-http-client","io.micronaut:micronaut-inject","io.micronaut:micronaut-management","io.micronaut:micronaut-validation"
    )
}

然后出现以下错误。

Caused by: org.gradle.internal.resolve.ModuleVersionResolveException: Could not resolve io.micronaut:micronaut-bom:2.0.1.
Required by:
    project : > my.group:library:11.0.0-SNAPSHOT
Caused by: org.gradle.internal.component.NoMatchingConfigurationSelectionException: No matching variant of io.micronaut:micronaut-bom:2.0.1 was found. The consumer was configured to find a runtime of a library compatible with Java 14,packaged as a jar,and its dependencies declared externally but:
  - Variant 'apiElements' capability io.micronaut:micronaut-bom:2.0.1:
      - Incompatible because this component declares an API of a platform and the consumer needed a runtime of a library
      - Other compatible attributes:
          - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
          - Doesn't say anything about its target Java version (required compatibility with Java 14)
          - Doesn't say anything about its elements (required them packaged as a jar)

我试图阅读有关变体选择的Gradle文档，但对我而言确实没有多大意义。有人知道我需要如何声明依赖项才能使此工作正常进行吗？看来这是一件微不足道的事情，但是我对此一无所获...

解决方法

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