JAVA调用python服务-优快云博客

本文介绍了如何使用Java通过`ProcessBuilder`调用Python脚本，展示了如何传递命令行参数，并处理Python脚本的输出和错误。Python脚本接收设备名、图片URL等数据，并记录日志。

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使用场景在很多情况，我们需要使用java去调用python的服务和功能

java代码

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class PythonScriptCaller {
    public static void main(String[] args) {
        try {
            // 构建命令
            ProcessBuilder pb = new ProcessBuilder("python3", "addwatermak_app.py", "Xiaoxin Air 14", "https://xxx.png", "1-1", "1711531502628-1d9359ec-45b9-49c3-9e2b-5518fa83ad7f-1mall1.png", "0");
            
            // 启动进程
            Process process = pb.start();
            
            // 读取标准输出
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
            
            // 读取标准错误
            BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
            while ((line = errorReader.readLine()) != null) {
                System.err.println(line);
            }
            
            // 等待进程完成
            int exitCode = process.waitFor();
            
            // 检查进程退出代码
            if (exitCode == 0) {
                System.out.println("Python script executed successfully.");
            } else {
                System.err.println("Error: Python script execution failed with exit code " + exitCode);
            }
            
        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}

python 代码

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Parse JSON data from command line")
    parser.add_argument("deviceName", type=str, help="JSON data as a string")
    parser.add_argument("img", type=str, help="JSON data as a string")
    parser.add_argument("imgKey", type=str, help="JSON data as a string")
    parser.add_argument("imgName", type=str, help="JSON data as a string")
    parser.add_argument("languageCode", type=str, help="JSON data as a string")
    args = parser.parse_args()
    device_name = args.deviceName
    img_url = args.img
    img_key = args.imgKey
    img_name = args.imgName
    logger.info(f"接收到deviceName: {device_name}, img_url: {img_url}, img_key: {img_key}, img_name: {img_name}")