他们的文档真的很薄,我无法弄清楚。
我在这里找到了部分答案,但它没有所有代码。
如何使用以太从 Java 中找到最新版本的 maven 工件?
Aether 团队维护了一个带有这样一个示例的演示页面:FindNewestVersion
.
简化一点,这就是它的归结。
将 Aether 依赖项添加到您的 POM:
<dependencies>
<dependency>
<groupId>org.eclipse.aether</groupId>
<artifactId>aether-impl</artifactId>
<version>${aetherVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.aether</groupId>
<artifactId>aether-connector-basic</artifactId>
<version>${aetherVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.aether</groupId>
<artifactId>aether-transport-file</artifactId>
<version>${aetherVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.aether</groupId>
<artifactId>aether-transport-http</artifactId>
<version>${aetherVersion}</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-aether-provider</artifactId>
<version>${mavenVersion}</version>
</dependency>
</dependencies>
<properties>
<aetherVersion>1.1.0</aetherVersion>
<mavenVersion>3.3.9</mavenVersion>
</properties>
然后,您可以像这样使用它:
public static void main(String[] args) {
RemoteRepository central = new RemoteRepository.Builder("central", "default", "http://repo1.maven.org/maven2/").build();
RepositorySystem repoSystem = newRepositorySystem();
RepositorySystemSession session = newSession(repoSystem);
Artifact artifact = new DefaultArtifact("groupId:artifactId:(0,]");
VersionRangeRequest request = new VersionRangeRequest(artifact, Arrays.asList(central), null);
try {
VersionRangeResult versionResult = repoSystem.resolveVersionRange(session, request);
System.out.println(versionResult.getHighestVersion());
} catch (VersionRangeResolutionException e) {
e.printStackTrace();
}
}
private static RepositorySystem newRepositorySystem() {
DefaultServiceLocator locator = MavenRepositorySystemUtils.newServiceLocator();
locator.addService(RepositoryConnectorFactory.class, BasicRepositoryConnectorFactory.class);
locator.addService(TransporterFactory.class, FileTransporterFactory.class);
locator.addService(TransporterFactory.class, HttpTransporterFactory.class);
return locator.getService(RepositorySystem.class);
}
private static RepositorySystemSession newSession(RepositorySystem system) {
DefaultRepositorySystemSession session = MavenRepositorySystemUtils.newSession();
LocalRepository localRepo = new LocalRepository("target/local-repo");
session.setLocalRepositoryManager(system.newLocalRepositoryManager(session, localRepo));
return session;
}
这将创建对 Maven 中央存储库的引用,并使用版本范围[0,)
来指定我们对具有无限最大值的所有版本感兴趣。最后,执行版本范围查询,这使我们能够确定最新版本。
这来自项目的Aether 演示和示例站点。我没有尝试运行它,但它应该是你的答案。
public static void main( String[] args ) throws Exception
{
System.out.println( "------------------------------------------------------------" );
System.out.println( FindNewestVersion.class.getSimpleName() );
RepositorySystem system = Booter.newRepositorySystem();
RepositorySystemSession session = Booter.newRepositorySystemSession( system );
Artifact artifact = new DefaultArtifact( "org.eclipse.aether:aether-util:[0,)" );
VersionRangeRequest rangeRequest = new VersionRangeRequest();
rangeRequest.setArtifact( artifact );
rangeRequest.setRepositories( Booter.newRepositories( system, session ) );
VersionRangeResult rangeResult = system.resolveVersionRange( session, rangeRequest );
Version newestVersion = rangeResult.getHighestVersion();
System.out.println( "Newest version " + newestVersion + " from repository "
+ rangeResult.getRepository( newestVersion ) );
}