Java中从maven拉取所需jar包及其依赖

背景

最近基于alibaba的jarslink框架开发了算法服务平台。各个算法模块以jar包的形式推送到maven仓库中，java代码需要根据配置信息，从*仓库拉取各个jar包及其依赖，本文记录下对应的代码实现

maven 依赖

<dependency>
  <groupId>org.kie.soup</groupId>
  <artifactId>kie-soup-maven-integration</artifactId>
  <version>7.21.0.Final</version>
 </dependency>

Java Demo

@Component
public class ModelMavenLoader{
  static{
    System.setProperty(MavenSettings.CUSTOM_SETTINGS_PROPERTY,ModelMavenLoader.class.getClassLoader().getResource("settings.xml").getPath());
  }
    
	public ModelMavenLoadResult loadWithDependency(DeployedModel deployedModel) throws Exception{
	    //下载依赖jar包
	    ArtifactResolver artifactResolver = new ArtifactResolver();
	    Artifact artifact = artifactResolver.resolveArtifact(deployedModel.toAFReleaseId());
	
	    List<DependencyDescriptor> dependecies = artifactResolver.getArtifactDependecies(deployedModel.toArtifactName());
	
	    File artifactJar = artifact.getFile();
	
	    List<File> dependencyFiles = new LinkedList<>();
	    for (DependencyDescriptor depend : dependecies) {
	        if (!DependencyFilter.COMPILE_FILTER.accept(depend.getReleaseId(), depend.getScope())) {
	            continue;
	        }
	        Artifact a = artifactResolver.resolveArtifact(depend.getReleaseId());
	        dependencyFiles.add(a.getFile());
	    }
	
	    ModelMavenLoadResult result = new ModelMavenLoadResult();
	    result.setArtifactJar(artifactJar);
	    result.setDependencyJars(dependencyFiles);
	
	    return result;
	}
}

Maven settings.xml

 <?xml version="1.0" encoding="UTF-8"?>
<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd" xmlns="http://maven.apache.org/SETTINGS/1.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <localRepository>/repository/</localRepository>
  <profiles>
    <profile>
      <repositories>
        <repository>
          <snapshots>
            <enabled>false</enabled>
          </snapshots>
          <id>central</id>
          <name>libs-release</name>
          <url>http://{ip:port}/artifactory/libs-release</url>
        </repository>
        <repository>
          <snapshots>
            <updatePolicy>always</updatePolicy>
          </snapshots>
          <id>snapshots</id>
          <name>libs-snapshot</name>
          <url>http://{ip:port}/artifactory/libs-snapshot</url>
        </repository>
      </repositories>
      <id>artifactory</id>
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>artifactory</activeProfile>
  </activeProfiles>
</settings>

结语

基于这样一个工具类，开发中可以把插件推送到*仓库，由代码去主动的拉取插件及jar包，基于jarslink框架，可以实现服务的插件应用。希望大家有所收获