How do I include jars in a groovy script?

Question

I have a groovy script that needs a library in a jar. How do I add that to the classpath? I want the script to be executable so I'm using #!/usr/bin/env groovy at the top of my script.

Answer 1

Are none of the options listed at http://groovy.codehaus.org/Running working for you?

Give them a try if you haven't.

If you really have to you can also load a JAR at runtime with:

this.getClass().classLoader.rootLoader.addURL(new File("file.jar").toURL())

Answer 2

The same as you would in Java.

This is an example of running a MySQL status monitoring script. mysql.jar contains the MySQL connector that I call from script status.groovy.

groovy -cp mysql.jar status.groovy ct1

Answer 3

You can add the jars to $HOME/.groovy/lib

Answer 4

You can also try out Groovy Grape. It lets you use annotations to modify the classpath. Its experimental right now, but pretty cool. See http://groovy.codehaus.org/Grape