SpringBoot（Java）调用Python脚本及传参

概述

本文用一个简单的例子，描述如何在SpringBoot中调用Python脚本，并获取Python返回的参数

Java调用并传参

public void test() {
        System.out.println("Start");
        // python脚本的绝对路径，在windows中用"\\"分隔，在Linux中用"/"分隔
        String pyPath = "E:\\Code\\Java\\myproject\\src\\main\\resources\\demo2.py";

        // 传入python脚本的参数为”111“
        String[] args1 = new String[]{"python", pyPath, "111"};

        try {
            // 执行Python文件，并传入参数
            Process process = Runtime.getRuntime().exec(args1);
            // 获取Python输出字符串作为输入流被Java读取
            BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String actionStr = in.readLine();
            if (actionStr != null) {
                System.out.println(actionStr);
            }

            in.close();
            process.waitFor();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }

        System.out.println("End");
    }

Python脚本接受参数并返回结果

import sys

if __name__ == '__main__':
    stateStr = sys.argv[1];
    number = int(stateStr) + 5;

    print("Python return: " + str(number));

输出结果

Start
Python return: 116
End

参考文献

Java调用Python脚本传递数据并返回计算结果