maven - 从Maven项目下载所有插件依赖项

Question

我试图在实际使用它们之前从maven项目中下载所有插件依赖项。

我试过运行:

mvn dependency:resolve-plugins

这样就成功下载了插件及其依赖项的一部分。例如，对于exec插件，我得到:

... 
[INFO] Plugin Resolved: exec-maven-plugin-1.6.0.jar
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven-toolchain/2.2.1/maven-toolchain-2.2.1.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/maven-toolchain/2.2.1/maven-toolchain-2.2.1.jar (37 KB at 437.4 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven-artifact-manager/2.2.1/maven-artifact-manager-2.2.1.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/maven-artifact-manager/2.2.1/maven-artifact-manager-2.2.1.jar (66 KB at 709.6 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar (238 KB at 1785.2 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/commons/commons-exec/1.3/commons-exec-1.3.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/commons/commons-exec/1.3/commons-exec-1.3.jar (54 KB at 610.9 KB/sec)
[INFO]     Plugin Dependency Resolved: maven-toolchain-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-project-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-model-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-artifact-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-artifact-manager-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-core-2.2.1.jar
[INFO]     Plugin Dependency Resolved: maven-plugin-api-2.2.1.jar
[INFO]     Plugin Dependency Resolved: plexus-utils-3.0.20.jar
[INFO]     Plugin Dependency Resolved: commons-exec-1.3.jar
...

但是，当您实际使用插件时，例如:

mvn exec:exec

事实证明，它的依赖项尚未完全下载。

    [INFO] --- exec-maven-plugin:1.6.0:exec (default-cli) @ ARandomProject ---
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven-toolchain/2.2.1/maven-toolchain-2.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/maven-toolchain/2.2.1/maven-toolchain-2.2.1.pom (4 KB at 6.9 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven/2.2.1/maven-2.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/maven/2.2.1/maven-2.2.1.pom (22 KB at 179.4 KB/sec)
...
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.jar (10 KB at 21.8 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven-plugin-descriptor/2.2.1/maven-plugin-descriptor-2.2.1.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/doxia/doxia-logging-api/1.1/doxia-logging-api-1.1.jar (12 KB at 23.0 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/maven-monitor/2.2.1/maven-monitor-2.2.1.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/doxia/doxia-sink-api/1.1/doxia-sink-api-1.1.jar (13 KB at 25.0 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
Downloaded: https://repo.maven.apache.org/maven2/commons-cli/commons-cli/1.2/commons-cli-1.2.jar (41 KB at 79.2 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/maven-plugin-descriptor/2.2.1/maven-plugin-descriptor-2.2.1.jar (39 KB at 73.4 KB/sec)
...

这是意外的，因为 according to the documentation的excludeTransitive属性默认情况下为false(并且显式设置它无济于事)。从我的角度来看，它只是从定义的插件中下载了一个级别的可传递依赖项。

有没有一种方法可以让依赖插件在实际需要它们之前下载所有传递插件的依赖，而不仅仅是第一层的？

Answer 1

如果确实需要一切准备就绪，则应执行mvn dependency:go-offline。
看一下这个 :

dependency:go-offline

Apache Maven Dependency Plugin