从插件设置Maven属性 [英] Set maven property from plugin

问题描述

我在这里阅读了一些有关如何通过maven插件设置属性的问题(其中大多数是关于应用程序的版本号的). 似乎没有简单的方法可以做到这一点，我发现最好的解决方案是拥有一个filter.properties文件，该文件从插件进行更新，并由主pom文件用来过滤所需的资源.

I've read some questions here about how to set a property (most of them talked about the version number for an application) from a maven plugin. It seems there's no easy way of doing this and the best solution I found is to have a filter.properties file which is updated from the plugin and used by the main pom file to filter the desired resources.

从Maven文档( Maven过滤器插件):

I tried another solution after I read this from the Maven documentation (Maven filter plugin):

变量可以包含在您的资源中.这些变量表示为 由$ {...}分隔符组成，可以来自系统属性 过滤器资源和命令中的项目属性 线.

Variables can be included in your resources. These variables, denoted by the ${...} delimiters, can come from the system properties, your project properties, from your filter resources and from the command line.

我发现有趣的是，可以从系统属性中读取变量.因此，我修改了插件以设置系统属性，如下所示:

I found interesting that variabled can be read from system properties. So, I modified my plugin to set a system property like this:

System.setProperty("currentVersion", appCurrentVersion);

但是，过滤后的资源似乎无法读取该值. 有人可以告诉我这种方法有什么问题吗?

However, filtered resources don't seem to read this value. Could anybody tell me what's wrong with this approach?

更新:我正在 validate 阶段运行我的插件.

UPDATE: I'm running my plugin in the validate phase.

非常感谢.

推荐答案

不要将其设置为系统属性，而是将其设置为Maven Project属性

Don't set it as System Property, set it as Maven Project property

// inject the project
@Parameter(defaultValue = "${project}")
private org.apache.maven.project.MavenProject project;

// and in execute(), use it:
project.getProperties().setProperty("currentVersion", appCurrentVersion);

请参阅:

• javadoc

• Mojo Developer Cookbook
• MavenProject javadoc

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