java中调用python语句

参数说明：

command：python文件路径
num1,num2：传入.py的参数，可自由增添。需要在String[] cmdArr = new String[] {exe,command,num1,num2};中进行相应增改

代码：

java部分

package test1;
import java.io.*;
public class test1 {
    public static void main(String[] args) throws IOException,InterruptedException {
        String exe = "python";
        String command = "D:\\add.py";
        String num1 = "1";
        String num2 = "2";
        String[] cmdArr = new String[] {exe,command,num1,num2};
        Process process = Runtime.getRuntime().exec(cmdArr);
        InputStream is = process.getInputStream();
        BufferedReader dis = new BufferedReader(new InputStreamReader(is));
        String str = dis.readLine();
        process.waitFor();
        System.out.println(str);
    }
    }

测试用的.py文件

# coding=utf-8
from sys import argv
num1 = argv[1]
num2 = argv[2]
sum = int(num1) + int(num2)
print(sum)

运行效果：

图片.png

其他备注：

1.BufferedReader dis = new BufferedReader(new InputStreamReader(is)); String str = dis.readLine();是jdk1.1以上的写法。1.1以下参考https://bbs.csdn.net/topics/340000334

2.备选项是jython，jython不支持python3及大部分科学计算类包