Loading Maven dependencies from GitHub [duplicate]

Question

How do I add a Java library from its GitHub repo (the library uses Maven as a build system) as a dependency to my Maven project? Can I do that without downloading and compiling the library?

Answer 1

Now you can import a Java library from a GitHub repo using JitPack. In your pom.xml:

1. Add repository:

<repository>     <id>jitpack.io</id>     <url>https://jitpack.io</url> </repository> 

2. Add dependency

<dependency>     <groupId>com.github.User</groupId>     <artifactId>Repo name</artifactId>     <version>Release tag</version> </dependency> 

It works because JitPack will check out the code and build it. So you'll end up downloading the jar.
If the project doesn't have a GitHub release then its possible to use a commit id as the version.

Answer 2

At the moment there is no way you can do this unless the maintainer of the library provided a way to do this.

So on the title page of the library the should be an instruction containing the repository address like:

<repositories>     <repository>         <id>YOUR-PROJECT-NAME-mvn-repo</id>         <url>https://raw.github.com/YOUR-USERNAME/YOUR-PROJECT-NAME/mvn-repo/</url>         <snapshots>             <enabled>true</enabled>             <updatePolicy>always</updatePolicy>         </snapshots>     </repository> </repositories> 

And a dependency name:

<dependency>      <groupId>...</groupId>      <artifactId>...</artifactId>      <version>...</version> </dependency> 

This means that all artifact of your project including your dependency will be searched in this repo.

You could also have a glance at pom.xml to check if there was an effort made to deploy artifacts to a remote repo. Typically the keywords are oss.sonatype.org or raw.github.com like in this case.

FYI, here is a way to provide a repo for your gihub artifact: Hosting a Maven repository on github.