Maven插件开发

首先使用命令创建Maven工程：

mvn archetype:generate -DgroupId=groupId -DartifactId=artifactId -DarchetypeArtifactId=maven-archetype-mojo

然后想在Eclipse下编辑工程，使用下面的命令把工程进行了转化：

mvn eclipse:eclipse

完成后新建class：

@Mojo(name="instrument", requiresDependencyResolution=ResolutionScope.COMPILE, defaultPhase=LifecyclePhase.VALIDATE)
public class xxxMojo extends AbstractMojo {

public void execute() throws MojoExecutionException {
String nameOfRunningVM = ManagementFactory.getRuntimeMXBean().getName();
int p = nameOfRunningVM.indexOf('@');
String pid = nameOfRunningVM.substring(0, p);

String jarFilePath = null;

getLog().info("Dynamically loading xxx instrumentation...");
try {
jarFilePath = xxx.class.getProtectionDomain().getCodeSource().getLocation()
.toURI().getPath().toString();

jarFilePath = new File(jarFilePath).getCanonicalPath();

getLog().info("Found xxx instrumentation within " + jarFilePath);
} catch (URISyntaxException e) {
getLog().error("Unable to find xxx instrumentation jar");
throw new RuntimeException(e);
} catch (IOException e) {
getLog().error("Unable to find xxx instrumentation jar");
throw new RuntimeException(e);
}

try {
VirtualMachine vm = VirtualMachine.attach(pid);
vm.loadAgent(jarFilePath, System.getProperty("xxx.AgentArgs"));
vm.detach();
} catch (Exception e) {
getLog().error("Error encountered while loading the xxx agent", e);
throw new RuntimeException(e);
}
}

}

修改pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>

<groupId>groupId</groupId>
<artifactId>artifactId</artifactId>
<version>1.0.0</version>
<packaging>maven-plugin</packaging>

<name>xxx Agent Maven Plugin</name>
<description>The xxx Agent provides run time performance monitoring for xxx applications</description>
<url>http://www.xxx.com/</url>

<licenses>
<license>
<name>The Apache Software License, Version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
<distribution>repo</distribution>
</license>
</licenses>

<developers>
<developer>
<id>zach</id>
<name>Zach Liu</name>
<email></email>
</developer>
</developers>

<!-- <scm> <connection>scm:git:git@github.com:xxx/android_agent.git</connection>
<url>git@github.com:xxx/android_agent.git</url> </scm> -->

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<profiles>
<profile>
<id>default-profile</id>
<activation>
<activeByDefault>true</activeByDefault>
<file>
<exists>${java.home}/../lib/tools.jar</exists>
</file>
</activation>
<properties>
<toolsjar>${java.home}/../lib/tools.jar</toolsjar>
</properties>
</profile>

<profile>
<id>mac-profile</id>
<activation>
<activeByDefault>false</activeByDefault>
<file>
<exists>${java.home}/../Classes/classes.jar</exists>
</file>
</activation>
<properties>
<toolsjar>${java.home}/../Classes/classes.jar</toolsjar>
</properties>
</profile>
</profiles>

<dependencies>
<!-- our rewriter -->
<dependency>
<groupId>groupId</groupId>
<artifactId>artifactId</artifactId>
<version>1.0.0</version>
</dependency>

<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>2.0</version>
</dependency>

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

<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>3.0.8</version>
</dependency>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>sun.jdk</groupId>
<artifactId>tools</artifactId>
<version>xxx</version>
<scope>system</scope>
<systemPath>${toolsjar}</systemPath>
</dependency>
</dependencies>

<build>
<finalName>${project.artifactId}-${project.version}</finalName>
<sourceDirectory>src</sourceDirectory>

<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>3.2</version>
<configuration>
<goalPrefix>agent</goalPrefix>
<skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
</configuration>
<executions>
<execution>
<id>mojo-descriptor</id>
<goals>
<goal>descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>

</build>

</project>

mvn clean install

生成插件并安装到本地库

另外在记录一下：

添加单个jar到maven本地仓库的操作如下：

1.建立一个新的文件夹，将jar文件存放在该文件夹下。注意文件夹下最好只存放该文件。

2.在cmd窗口中执行以下命令： mvn install:install-file -Dfile=<path-to-file> -DgroupId=<group-id> -DartifactId=<artifact-id> -Dversion=<version> -Dpackaging=<packaging>

例如：

mvn install:install-file -Dfile=xxx.jar -DgroupId=xxx -DartifactId=xxx -Dversion=1.0.0 -Dpackaging=jar