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使用Maven将依赖项下载到命令行上的目录

分类: 技术问答 • 2022-05-24 12:08:33
问题描述：

我需要将项目的所有传递依赖项下载到命令行上的目录，而没有pom.xml文件或其他脚本。理想情况下，我可以使用一个或两个命令执行此操作。据我所知，这至少是使用mvn的两步过程。

I need to download all transitive dependencies of a project to a directory on the command line without having a pom.xml file or other script. Ideally I would be able to do this with one or two commands. From what I can tell, this is at least a 2 step process with mvn.


  1. 将依赖项下载到本地存储库

  2. 将依赖项复制到lib目录

要获取我运行的依赖项

$ mvn org.apache.maven.plugins:maven-dependency-plugin:2.6:get -DgroupId=org.jclouds.provider -DartifactId=rackspace-cloudservers-us -Dversion=1.5.8

哪个效果很好。不幸的是，dest param对我没有帮助，因为它不会将所有传递依赖项放在dest中。

Which works great. Unfortunately the dest param doesn't help me as it won't put all transitive dependencies in the dest.

所以现在我需要复制那个JAR文件及其所有的传递依赖到我的lib目录。我知道这部分已经在StackOverflow上被问了很多次，但是我的工作没有任何效果。我已尝试过以下内容。

So now I need to copy that JAR file and all of its transitive dependencies into my lib directory. I know this part has been asked many time on StackOverflow but nothing has worked for my yet. I've tried the following.

$ mvn dependency:copy-dependencies ...
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.1:copy-dependencies (default-cli): Goal requires a project to execute but there is no POM in this directory

和

$ mvn dependency:copy ...
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.1:copy (default-cli): Goal requires a project to execute but there is no POM in this directory

通过阅读StackOverflow上的文档和其他答案来获取复制依赖和复制我想我会能够在没有pom.xml的情况下从命令行使用它们，但是mvn似乎需要一个。我的Maven版本是Apache Maven 3.0.4（r1232337; 2012-01-17 02：44：56-0600）。

From reading the documentation and other answers here on StackOverflow for copy-dependencies and copy I thought I would be able to use them from the command line without a pom.xml but mvn seems to need one. My Maven version is Apache Maven 3.0.4 (r1232337; 2012-01-17 02:44:56-0600).

任何人都可以给我一个复制传递的例子使用没有pom.xml的mvn的依赖关系？

Can anyone give me an example of copying transitive dependencies using mvn without a pom.xml?

有没有更好的方法来做我在这里尝试完成的事情？

Is there a better way to do what I'm trying accomplish here?

答

第一个命令几乎可以满足您的需求 - 相关依赖项的POM。一旦你有了这个，你就不需要另外一个项目POM来运行 copy：dependencies ：

The first command almost gets you what you need - the POM of the dependency in question. Once you have that, you should not need a further project POM to run copy:dependencies:

这是一个例子：

mvn org.apache.maven.plugins:maven-dependency-plugin:2.7:get -DgroupId=org.jclouds.provider -DartifactId=rackspace-cloudservers-us -Dversion=1.5.8 -Dtype=pom

mvn org.apache.maven.plugins:maven-dependency-plugin:2.7:copy-dependencies -f /path/to/m2/repo/org/jclouds/provider/rackspace-cloudservers-us/1.5.8/rackspace-cloudservers-us-1.5.8.pom -DoutputDirectory=/path/to/target/dir/don't/use/.

正如 Everett Toews ，您可以使用 copy：dependencies 以进一步细化下载的内容，例如通过添加 -DexcludeTypes = test-jar 来过滤掉测试JAR。

As pointed out by Everett Toews, you can use additional options of copy:dependencies to further refine what's downloaded, e.g. by adding -DexcludeTypes=test-jar to filter out the test JARs.

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