Maven可以收集项目的所有依赖JAR来帮助应用程序部署吗？ [英] Can Maven collect all the dependent JARs for a project to help with application deployment?

问题描述

我刚刚开始使用 Maven ，（评估它，真的），我需要能够为我的应用程序和具有所有依赖项的目录快速生成一个 JAR 文件（适用于例如lib），以便我可以部署这两个以独立的方式运行。使用正确的清单生成JAR文件很容易，但我不知道如何让Maven将当前项目的依赖项复制到可以部署的 lib 目录中。

I'm just starting to use Maven, (evaluating it, really) and I need to be able to quickly generate a JAR file for my application and a directory with all the dependencies (for example, lib) so that I can deploy those two to be run in a stand-alone manner. Generating the JAR file with the proper manifest is easy, but I do not know how to get Maven to copy the dependencies for the current project into a lib directory that I can deploy.

由于这是一个独立的Java应用程序，因此我不想有兴趣部署到Maven存储库，这也是相当微不足道的，或者至少很容易googleable。

Since this is for a stand-alone Java applications, I am not interested in deploying to a Maven repository, that is also fairly trivial, or at least easily googleable.

我已经发现如何做所有的事情，除了将依赖的JAR文件复制到某个指定的目录中。这是我正在寻找的工作流程：

I've found out how to do everything except copy the dependent JAR files into some specified directory. This is the workflow I'm looking for:

$ mvn clean
$ mvn package
$ cp -r target/{lib,myApp.jar} installLocation

然后，运行作为JAR文件，来自 installLocation 的myApp.jar 不管我的 $ CLASSPATH 。

Then, running myApp.jar from installLocation as a JAR file should "just work" regardless of my $CLASSPATH.

尝试预先解决一些答案：

To try and pre-empt some answers:

• 我确实有一个Main类：set，它的工作正常。


• 我也在MANIFEST.MF中设置了类路径，而且工作正常。


• 我已经发现如何使用< classpathPrefix> 和< classpathMavenRepositoryLayout> 这个工作 - 但只能在我的机器上。 （via：< classpathPrefix> $ {settings.localRepository}< / classpathPrefix> ）

• I do have a Main-class: set, and it works fine.
• I've also set the classpath in the MANIFEST.MF, and that works fine too.
• I've found out how to use <classpathPrefix> and <classpathMavenRepositoryLayout> to make this work -- but only on my machine. (via: <classpathPrefix>${settings.localRepository}</classpathPrefix>)

推荐答案

你想要调查的是 Maven的依赖插件。在pom.xml中添加类似于以下内容的内容：

What you want to investigate is Maven's dependency plugin. Add something similar to the following to pom.xml:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <configuration>
        <outputDirectory>
            ${project.build.directory}
        </outputDirectory>
    </configuration>
</plugin>

然后运行 mvn clean依赖关系：copy-dependencies 程序集插件相结合，您可以将所有内容打包成一个自包含的归档文件。

Then run mvn clean dependency:copy-dependencies to copy perform the copy. Combine this with the assembly plugin and you can package everything into a self contained archive for distribution.

这篇关于Maven可以收集项目的所有依赖JAR来帮助应用程序部署吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！