java web如何调用py脚本文件

@Controller
public class IndexController {@RequestMapping("/pythonTest")@ResponseBodypublic String pythonTest(){// 假设你的Python脚本名为script.pyString pythonScriptPath = "D:\\project\\c1\\hello.py";ProcessBuilder processBuilder = new ProcessBuilder("python", pythonScriptPath);processBuilder.redirectErrorStream(true);String lines="";try {Process process = processBuilder.start();// 读取Python脚本的输出BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));String line;while ((line = reader.readLine()) != null) {lines+=line;}// 等待Python脚本执行完成int exitCode = process.waitFor();if (exitCode != 0) {System.out.println("Python script exited with error code: " + exitCode);}reader.close();} catch (IOException | InterruptedException e) {e.printStackTrace();}return lines;}
}

hello.py

def say_hello():print("hello")if __name__=="__main__":say_hello()