java调用python并获取返回值

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class JavaPythonUtils {
    public static void testgunapi() throws InterruptedException, IOException {

        Process pr = Runtime.getRuntime().exec("python D:/ideaPyWorkspaces/testapi/srccode/testgunapi.py");
        BufferedReader in = new BufferedReader(new InputStreamReader(pr.getInputStream()));
        String line;
        while ((line = in.readLine()) != null) {
            System.out.println(line);
        }
        in.close();
        pr.waitFor();
    }

}