为什么Maven找不到我的自定义Mojo？ [英] Why can Maven not find my custom Mojo?

问题描述

我有自己的Mojo课程。

I have an own Mojo class.

 @Mojo(name="mojo", threadSafe=true)
 public class MyMojo extends AbstractMojo
 {
     @Component
     private MavenProject project;

     public void execute() throws MojoExecutionException, MojoFailureException
     {
        getLog().info("Execute");
     }
  }

之后我将它安装在本地存储库中。

After that I install it in local repository.

 [INFO] Applying mojo extractor for language: java-annotations
 [INFO] Mojo extractor for language: java-annotations found 0 mojo descriptors.
 [INFO] Applying mojo extractor for language: java
 [INFO] Mojo extractor for language: java found 0 mojo descriptors.
 [INFO] Applying mojo extractor for language: bsh
 [INFO] Mojo extractor for language: bsh found 0 mojo descriptors.
 ....
 [INFO] BUILD SUCCESS

但是当试图调用'mojo'目标我得到了错误

But when try to call 'mojo' goal I got en error

   [ERROR] Could not find goal 'mojo' in plugin my.plugins:my-plugin:1.0-SNAPSHOT among available goals -> [Help 1]

what is the problem?

---

这是maven-plugin-plugin配置。

---

Here is maven-plugin-plugin configuration.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-plugin-plugin</artifactId>
    <version>3.2</version>
    <configuration>                                                 
        <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
     </configuration>
 </plugin>

使用javadoc注释的旧机制运行良好，但我想使用java注释。

Old mechanism with javadoc annotations works well, but i want to use java annotation.

<dependency>
    <groupId>org.apache.maven.plugin-tools</groupId>
    <artifactId>maven-plugin-annotations</artifactId>
    <version>3.2</version>
</dependency>


 [INFO] --- maven-plugin-plugin:3.2:descriptor (default-descriptor) @ bla-mvn-plugin 

为什么启用默认描述符而不是mojo-descriptor？

Why default-descriptor is enabled instead of mojo-descriptor?

推荐答案

将此部分添加到插件的POM中：

Add this section to your plugin's POM:

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-plugin-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
                </configuration>
                <executions>
                    <execution>
                        <id>mojo-descriptor</id>
                        <phase>process-classes</phase>
                        <goals>
                            <goal>descriptor</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

PS。请参阅maven-compiler-plugin：3.0源代码，了解使用注释构建MOJO的完整工作示例

PS. See maven-compiler-plugin:3.0 sources for full working example of building MOJOs with annotations

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