Question

我的插件中有一个需要mysql或postgres驱动程序的任务。目前我用FooPlugin::apply方法硬编码：

configuration.dependencies.add(project.dependencies.create('mysql:mysql-connector-java:5.1.34'))

但我想让用户选择他们的司机。所以为此，我想从gradle构建脚本（build.gradle）获取所有依赖项，它们应用我的插件将动态注入这些依赖项。

已解决：添加一段代码

我试过了：

class FooPlugin implements Plugin<Project>{

    @Override
    void apply(Project project) {
        project.afterEvaluate {
            def configuration = project.configurations.create('bar')
            configuration.extendsFrom(project.configurations.findByName('compile'))
            …
        }
    }
}

如果您未进入project.afterEvaluate阻止，则会引发错误：

Cannot change dependencies of configuration ':bar' after it has been resolved.

Answer 1

我不确定你想要完成什么，所以我会猜几件事情。

看起来您尝试添加依赖项或根据添加的依赖项做出反应。我认为你可以通过resolutionStrategy

完成

project.configurations {
    compile.resolutionStrategy {
        // adds a dependency to a project, always.
        force 'commons-io:commons-io:2.5'
        // loop through all the dependencies to modify before resolution
        eachDependency { DependencyResolveDetails details ->
            // here you can change details about a dependency or respond however needed
            if (details.requested.group == 'mysql' && details.requested.name == 'mysql-connector-java') {
                // for example we can force a specific version
                details.useVersion '5.1.34'
            }
            // you could also add a if block for postgres if needed
        }
    }
}

如何向插件任务添加build.grade脚本中的依赖项？

1 个答案: