写在前面
在使用maven肯定是离不开插件的，比如执行mvn clean或者时mvn compile其实运行的就是绑定的默认插件。虽然我们一般不需要来自定义插件，但是为了使用的过程中更加的清晰，来尝试自定义插件还是很有必要的，所以本文就一起来看下这部分内容。
1：hello world
想要定义插件，我们首先需要创建一个普通的maven项目，接着在pom中引入定义插件需要的依赖：
<!--这个依赖引入了插件开发需要的相关基础类-->
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>3.0</version>
</dependency>
<!--这个依赖引入了插件开发需要的相关注解-->
<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-annotations</artifactId>
<version>3.4</version>
<scope>provided</scope>
</dependency>
接着我们来定义插件类：
@Mojo(name = "TimerPlugin")
public class TimerPlugin extends AbstractMojo {
public void execute() throws MojoExecutionException, MojoFailureException {
String currentTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
getLog().info("timer plugin is running，current time is " + currentTime);
}
}
抽象类AbstractMojo实现了接口org.apache.maven.plugin.Mojo，主要定义了逻辑执行方法execute，日志设置相关方法，其中execute是来写具体插件逻辑的。接着执行mvn clean install把插件安装到本地仓库,成功后就可以在仓库中看到我们的插件jar了：
接着就可以来使用了，两种方式，第一种是直接使用，第二种是绑定到maven的生命周期中。
1.1：直接使用
首先创建一个maven项目，然后执行mvn 插件groupId:插件artifactId[:插件版本]:插件目标名称:
PS D:\tmp\maven-plugin-demo> mvn org.example:maven-plugin-demo:TimerPlugin
[INFO] Scanning for projects...
[INFO]
[INFO] -------------------< org.example:maven-plugin-demo >--------------------
[INFO] Building maven-plugin-demo 1.0-SNAPSHOT
[INFO] ----------------------------[ maven-plugin ]----------------------------
[INFO]
[INFO] --- maven-plugin-demo:1.0-SNAPSHOT:TimerPlugin (default-cli) @ maven-plugin-demo ---
[INFO] timer plugin is running，current time is 2025-03-14
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.456 s
[INFO] Finished at: 2025-03-14T16:55:27+08:00
[INFO] ------------------------------------------------------------------------
timer plugin is running，current time is 2025-03-14就是我们插件的输出了。
1.2：绑定到生命周期
需要在plugins标签中定义：
<build>
<plugins>
<plugin>
<groupId>org.example</groupId>
<artifactId>maven-plugin-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<executions>
<execution>
<id>test1111</id>
<phase>compile</phase>
<goals>
<goal>TimerPlugin</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
其中phase定义了要绑定的生命周期，goal是要执行的逻辑，即在@Mojo中定义的信息，定义后我们就可以在idea的maven面板中看到相关的插件信息了：
当我们执行compile时该插件就会执行了：
2：带参数的插件
需要使用到注解@Parameter,定义如下类：
@Mojo(name = "TimerPlugin")
public class TimerPlugin extends AbstractMojo {
@Parameter(property = "timer.username" ,defaultValue = "moutory")
private String userName;
@Parameter(property = "timer.status", defaultValue = "happy")
private String status;
public void execute() throws MojoExecutionException, MojoFailureException {
String currentTime = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
getLog().info("timer plugin is running, current time is " + currentTime);
getLog().info(String.format("hi %s ! Now you are %s",userName,status));
}
}
安装插件后使用。
首先看命令行直接使用：
D:\tmp\maven-plugin-demo>mvn org.example:maven-plugin-demo:TimerPlugin -Dtimer.username=xxxxx -Dtimer.status=尽量保持平静
[INFO] Scanning for projects...
[INFO]
[INFO] -------------------< org.example:maven-plugin-demo >--------------------
[INFO] Building maven-plugin-demo 1.0-SNAPSHOT
[INFO] ----------------------------[ maven-plugin ]----------------------------
[INFO]
[INFO] --- maven-plugin-demo:1.0-SNAPSHOT:TimerPlugin (default-cli) @ maven-plugin-demo ---
[INFO] timer plugin is running, current time is 2025-03-14
[INFO] hi xxxxx ! Now you are 尽量保持平静
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.473 s
[INFO] Finished at: 2025-03-14T17:37:16+08:00
[INFO] ------------------------------------------------------------------------
通过-D来传递参数。再来看下绑定到生命周期使用：
<build>
<plugins>
<plugin>
<groupId>org.example</groupId>
<artifactId>maven-plugin-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<executions>
<execution>
<id>test</id>
<phase>compile</phase>
<goals>
<goal>TimerPlugin</goal>
</goals>
</execution>
</executions>
<configuration>
<userName>Jim</userName>
<status>good</status>
</configuration>
</plugin>
</plugins>
</build>
绑定到compile阶段，所以我们可以指定compile来看下效果：
PS D:\tmp\untitled1111> mvn compile
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< org.example:untitled1111 >----------------------
[INFO] Building untitled1111 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ untitled1111 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ untitled1111 ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-plugin-demo:1.0-SNAPSHOT:TimerPlugin (test) @ untitled1111 ---
[INFO] timer plugin is running, current time is 2025-03-14
[INFO] hi Jim ! Now you are good
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.245 s
[INFO] Finished at: 2025-03-14T17:40:08+08:00
[INFO] ------------------------------------------------------------------------