Maven:如何在Mojos之间传递参数? [英] Maven: how to pass parameters between Mojos?

问题描述

如何编程一个Mojo以设置另一个Mojo的配置?例如:Mojo A要求定义配置参数A.foo.用户可以手动指定A.foo或运行插件B，插件B将为其计算值.

How do I program one Mojo to set another Mojo's configuration? For example: Mojo A requires configuration parameter A.foo to be defined. A user can either specify A.foo manually or run plugin B which will calculate the value for him/her.

推荐答案

回答我自己的问题:

可以使用MavenProject实例在运行时访问插件的配置或项目范围的属性:

It's possible to access a plugin's configuration or project-wide properties at runtime using a MavenProject instance:

/**
 * The maven project.
 * 
 * @parameter expression="${project}"
 * @readonly
 */
 private MavenProject project;

然后您可以在运行时访问插件的配置:

You can then access a plugin's configuration at runtime:

private Plugin lookupPlugin(String key)
{
    List plugins = getProject().getBuildPlugins();

    for (Iterator iterator = plugins.iterator(); iterator.hasNext();)
    {
        Plugin plugin = (Plugin) iterator.next();
        if(key.equalsIgnoreCase(plugin.getKey()))
            return plugin;
    }
    return null;
}

...
Xpp3Dom configuration = (Xpp3Dom) Plugin.getConfiguration()
configuration.getChild("parameterName"); // get parameter
configuration.addChild(new Xpp3Dom("parameterName")); // add parameter
...

注意:在当前阶段结束时，所有配置更改都将被丢弃.

Note: Any configuration changes are discarded at the end of the current phase.

来源:或者，您可以使用MavenProject.getProperties()获取/设置项目范围的参数.

Alternatively, you can get/set project-wide parameters using MavenProject.getProperties().

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