如何将 JyNI 嵌入 jar 中

Question

I'm developing an application in java, and in this one, I use jython-standalone (Jython for untold reasons, its goal being to ease some scripting within the application).

I would like to have access to NumPy, and it seems that JyNI provides such capabilities.

I found many posts explaining how to start a Jython project using JyNI, but none on how to include the .jar or something in the application so that it is available when needed.

As stated on JyNI , java -cp build/JyNI.jar -jar jython.jar does not work.

Is there a way for me to use JyNI when executing some Jython code through a PythonInterpreter ?

Answer 1

You should be able to start the live interpreter by executing the class org.python.util.jython.

On Linux, OSX:

java -cp jython.jar:build/JyNI.jar org.python.util.jython

On Windows:

java -cp jython.jar;build\JyNI.jar org.python.util.jython

Alternatively, one can use Jython's start script:

jython -J-cp build/JyNI.jar

This info is taken from https://github.com/Stewori/JyNI#running-jyni , but leaving out the script argument someFile.py.

If you want to explicitly leverage the interpreter through Java code, you will surely have some way to launch your overall application. Make sure to have JyNI.jar and the folder containing its binaries on classpath in that command. Jython should be running with JyNI support then.

A side-note: Be sure to use Jython 2.7.1 and NumPy >= 1.12. Version mismatch of these prerequisites is a common cause of failure.