Fetching Maven artifacts programmatically
aether, api, dependencies, java, maven
Solution
jcabi-aether may help you (I'm a developer). It's a simple wrapper around Aether, that lets you find all transitive dependencies of a Maven artifact:
File repo = this.session.getLocalRepository().getBasedir();
Collection<Artifact> deps = new Aether(this.getProject(), repo).resolve(
new DefaultArtifact("junit", "junit-dep", "", "jar", "4.10"),
JavaScopes.RUNTIME
);
Thus, all you need to provide as an input is:
- Local repo location, as a directory name
- List of repote repositories (`MavenProject#getRemoteRepositories()`)
- Maven coordinates of the artifact
- Maven scope to look for
Absolute paths of every dependency found can be obtained as `Artifact#getPath()`
Problem
I'm looking for a Java API which can be used to retreive Maven artifacts from a remote repository. I've found Eclipse Ather so far but it looks over complicated for my needs so i'm seeking for something more simple. What i need is: - I have to specify the location of the remote Maven repository - I like to fetch an artifact based on it's groupId + artifactId + version - The API have to provide the current remote version of the artifact (think about SNAPSHOT artifacts which are regularly built so they have a generated part in their versions) - Return the location of the artifact, a HTTP URL is preferred (i'll fetch it on my own with eg. Apache HTTP Client) - Optionally retreive the artifact's which are the dependants of the requested one.