Installing unirest-java with the Maven Assembly Plugin Posted 4 months ago
Managing dependencies for your Java applications is difficult, unless you have Maven! Maven is an Apache build manager for Java projects. In this post, we will use a Maven plugin (Maven Assembly) to pull all the unirest-java dependencies in one bundle/jar file.
Let’s get started (the steps below assume you already have Java and Git installed):
Update: If you’re building for Android, please refer to this post.
1. Download/Install Maven
To check if you already have Maven in your machine, run..
in your Terminal. OS X prior to Maverick already comes with Maven. If you don’t have Maven yet, you can head over to this download page and install it. (Also make sure to set $JAVA_HOME accordingly). If everything’s good, the output should look something like below:
2. Clone the unirest-java repository
Pick a folder where you want to clone the unirest-java repository, and run..
"git clone https://github.com/Mashape/unirest-java.git”
This will download the source for unirest-java. Note that in the root folder, there’s a pom.xml file. This contains the directive for the Maven Assembly Plugin to generate a jar file of the unirest-java library bundled together with the required dependencies.
3. Call the Maven Assembly plugin
To invoke the assembly plugin, run..
"mvn clean assembly:assembly"
Run this in the root folder of your cloned unirest-java repository. This would pick up the directive in the pom.xml file and start bundling the unirest library into a jar file, along with its dependencies. It would also run unit tests to make sure everything’s good.
If successful, it should generate a /target folder with the following contents:
The jar file we need is underlined in the image above. We can then import this into our project like below (shown here in Eclipse):
Here’s a sample code that uses unirest-java: