在 Gradle 构建脚本中使用 Java 类
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Use Java class in Gradle build script
提问by WeSt
I have a Gradle build script which has to instantiate a Java class in a Task and call a method on the created object. Currently, I have the following:
我有一个 Gradle 构建脚本，它必须在 Task 中实例化一个 Java 类并在创建的对象上调用一个方法。目前，我有以下几点：
apply plugin: 'java'
dependencies {
compile files("libs/some.library.jar")
}
task A << {
def obj = new some.library.TestClass()
obj.doSomething()
}
The problem is that the class some.library.TestClass()is not found. I read this articleabout how to use Groovy classes in Gradle, but I need my Java class to come from an external JAR file. How can I add a jar to the build source? It seems that the dependenciesblock doesnt do what I expect it to do. Can anyone give me a hint in the right direction?
问题是some.library.TestClass()找不到类。我阅读了这篇关于如何在 Gradle 中使用 Groovy 类的文章，但我需要我的 Java 类来自外部 JAR 文件。如何将 jar 添加到构建源？似乎dependencies块没有做我期望它做的事情。谁能给我一个正确方向的提示？
回答by Opal
The dependency compile files("libs/some.library.jar")is added as a project dependency not as the script dependency itself. What You need to do is to add this dependency in script's classpathscope.
该依赖项compile files("libs/some.library.jar")被添加为项目依赖项，而不是脚本依赖项本身。您需要做的是在脚本的classpath范围内添加此依赖项。
apply plugin: 'java'
buildscript {
dependencies {
classpath files("libs/some.library.jar")
}
}
task A << {
def obj = new some.library.TestClass()
obj.doSomething()
}
Now it should work.
现在它应该可以工作了。
