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Using a java library from python

I have a python app and java app. The python app generates input for the java app and invokes it on the command line.

I'm sure there must be a more elegant solution to this; just like using JNI to invoke C code from Java.

Any pointers? (FYI I'm v. new to Python)

Clarification (at the cost of a long question: apologies) The py app (which I don't own) takes user input in the form of a number of configuration files. It then interprits these and farms work off to a number of (hidden) tools via a plugin mechanism. I'm looking to add support for the functionality provided by the legacy Java app.

So it doesn't make sense to call the python app from the java app and I can't run the py app in a jython environment (on the JVM).

Since there is no obvious mechanism for this I think the simple CL invocation is the best solution.

Answer*

You can use a library called BridgeService that exposes (for now) Java code as Rest API.

https://github.com/adobe/bridgeService

You can either put your library in the project itself or if it is a project of your, you can add the bridgeService to your project and make it accessible.

For example if you want to send a call to the java class (This example will work if you launch the project as it is following [Running a DEMO](https://github.com/adobe/bridgeService#running-a-demo) ):

If you send the following payload with the POST call `http://localhost:8080/call`:

```
{
 "callContent": {
 "call1": {
 "class": "com.adobe.campaign.tests.bridge.testdata.one.SimpleStaticMethods",
 "method": "methodAcceptingStringArgument",
 "args": [
 "A Real"
 ]
 }
 }
}
```

In the example abobe the code will execute the method `methodAcceptingStringArgument`in the class `com.adobe.campaign.tests.bridge.testdata.one.SimpleStaticMethods`.

The return value will be :
```
{
	"returnValues": {
		"call1": "A Real_Success"
	},
 "callDurations": {
		"call1": 7
	}
}
```

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2024年05月06日 20:51:47 +00:00
Commented May 6, 2024 at 20:51

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Using a java library from python

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