maven java讀取maven的pom.xml文件

可以使用maven官方的 maven-model里的MavenXpp3Reader類來讀取pom.xml文件， 需要引用maven jar包：

<dependency>
            <groupId>org.apache.maven</groupId>
            <artifactId>maven-model</artifactId>
            <version>3.0</version>
        </dependency>

當然，也可以直接找到pom的安裝路徑下的lib目錄找到maven-model-3.1.0.jar文件，引用到項目中。

import org.apache.maven.model.Model;
import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
 * Created by outofmemory.cn on 2015/10/21.
 */
public class Main {
    public static void main(String[] args) throws IOException, XmlPullParserException {
        MavenXpp3Reader reader = new MavenXpp3Reader();
        String myPom = System.getProperty("user.dir") + File.separator + "pom.xml";
        Model model = reader.read(new FileReader(myPom));
    }
}

如果你需要解析pom的父pom，以及父依賴等信息，需要用到ModelBuildingRequest 類，實例代碼如下。

ModelBuildingRequest req = new DefaultModelBuildingRequest();
req.setProcessPlugins( false );
req.setPomFile( file );
req.setModelResolver( new RepositoryModelResolver( basedir, pathTranslator ) );
req.setValidationLevel( ModelBuildingRequest.VALIDATION_LEVEL_MINIMAL );

Model model;
try
{
    model = builder.build( req ).getEffectiveModel();
}
catch ( ModelBuildingException e )
{
     ...
}