Java 调用 Python函数 踩坑

java代码

package com;

import org.python.core.PyFunction;
import org.python.core.PyObject;
import org.python.core.PyString;
import org.python.util.PythonInterpreter;

public class CallPythonInterpreter {
    private static PyFunction pyFunction = null;

    public static void main(String[] args) {
        PyObject pyObject = callPython(new PyString("D:/Program/Python/videoRec.py"));
        System.out.println(pyObject.asString());
    }

    public static PyObject callPython(PyObject... params) {
        if (pyFunction == null) {
            PythonInterpreter interpreter = new PythonInterpreter();
            interpreter.execfile("D:/Program/Python/videoRec.py");
            // 第一个参数为期望获得的函数（变量）的名字，第二个参数为期望返回的对象类型
            pyFunction = interpreter.get("fun", PyFunction.class);
        }
        PyObject pyobj = pyFunction.__call__(params);
        return pyobj;
    }
}

python脚本

import sys

def fun(img):
    print(img)
    return (img)
    
    
if __name__ == '__main__':
    img = sys.argv[1]
    fun(img)

Maven依赖

        <!-- https://mvnrepository.com/artifact/org.python/jython -->
        <dependency>
            <groupId>org.python</groupId>
            <artifactId>jython</artifactId>
            <version>2.5.3</version>
        </dependency>