Java Maven MOJO - 从项目 POM 中获取信息
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Java Maven MOJO - getting information from project POM
提问by Xeperis
I am working on a maven plugin. I seem to have a hard time figuring out, what would be a good way to get POM information from project in which you execute the MOJO ?
我正在开发一个 Maven 插件。我似乎很难弄清楚，从执行 MOJO 的项目中获取 POM 信息的好方法是什么？
For instance if I execute my mojo in another maven project I would like to get project name or some other parameters.
例如，如果我在另一个 Maven 项目中执行我的 mojo，我想获取项目名称或其他一些参数。
And one more thing, there is a context MAP in AbstractMojo.java class there is private Map pluginContext, could someone correct me if I am wrong but this is suppose to be used for passing information between mojos ?
还有一件事，AbstractMojo.java 类中有一个上下文 MAP，有一个私有 Map pluginContext，如果我错了，有人可以纠正我，但这应该用于在 mojos 之间传递信息吗？
回答by J?rn Horstmann
You can inject the current maven project into your mojo with a field declared like this:
您可以使用如下声明的字段将当前的 maven 项目注入到您的 mojo 中：
/**
* @parameter default-value="${project}"
* @required
* @readonly
*/
MavenProject project;
The projects name is then available by simply calling project.getName().
To use this API, you need to add the maven-projectartifact as a dependency:
然后只需调用即可获得项目名称project.getName()。要使用此 API，您需要添加maven-project工件作为依赖项：
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.0.6</version>
</dependency>
回答by Jesse Glick
@Component
private MavenProject project;
also works (more succinctly and intuitively) if using the new maven-plugin-annotations, which is the default for new mojos created from maven-archetype-plugin.
如果使用 new 也可以（更简洁直观）maven-plugin-annotations，这是从maven-archetype-plugin.
EDIT(thanks to @bmargulies): although the @ComponentJavadoc as of 3.2 suggests using it for MavenProject, apparently that is deprecated and the suggestion is dropped as of 3.3; the idiom suggestedby maven-plugin-tools-annotations(as of 3.3) is something like this (both seem to work):
编辑（感谢@bmargulies）：尽管@Component3.2的Javadoc 建议将其用于MavenProject，但显然已弃用并且该建议从 3.3 开始被删除；该建议成语的maven-plugin-tools-annotations（如3.3）是这样的（似乎都工作）：
@Parameter(defaultValue="${project}", readonly=true, required=true)
private MavenProject project;
回答by Partly Cloudy
The preferred syntax is now:
现在首选的语法是：
@Parameter(defaultValue = "${project}", required = true, readonly = true)
MavenProject project;
You will have to add a dependency for maven-projectto your plugin's pom:
您必须为maven-project插件的 pom添加一个依赖项：
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.0.6</version>
</dependency>
(Thanks to others who have supplied this information already. This answer combines them in one place.)
（感谢已经提供此信息的其他人。这个答案将它们组合在一个地方。）
