Java共享（交叉）依赖性管理

Question

Lets say I am building a java application that relies on a two libraries: A and B. Both A and B are dependent on on a library C. What is the best way to manage that A and B are using the same version so they don't conflict? I am using Gradle.

Answer 1

Starting from Gradle 4.6 (5.x) Gradle provides support for importing bill of materials (BOM) files , which are effectively .pom files that use <dependencyManagement> to control the dependency versions of direct and transitive dependencies. Sounds like what you need. So, if library C has a BOM just import that BOM of the version you want to enforce:

dependencies {
    // import a BOM
    implementation(enforcedPlatform("com.acme:c-bom:1.0.0"))

    implementation("com.acme:a:1.2.3")
    implementation("com.acme:b:4.5.6")
}

If the library does not have a BOM, just declare it explicitly:

dependencies {
    implementation("com.acme:c:1.0.0")

    implementation("com.acme:a:1.2.3")
    implementation("com.acme:b:4.5.6")
}