要通过Java程序调用Python脚本，可以使用Runtime.getRuntime().exec()方法或者ProcessBuilder类。以下是两种方法的示例代码：
使用 Runtime.exec() 方法
import java.io.*; public class CallPythonScript { public static void main(String[] args) { try { String pythonScriptPath = "/path/to/your/pythonScript.py"; String[] command = new String[]{"python", pythonScriptPath}; // 执行Python脚本 Process process = Runtime.getRuntime().exec(command); // 读取脚本的输出 BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line = reader.readLine()) != null) { System.out.println(line); } // 等待脚本执行完成 int exitCode = process.waitFor(); System.out.println("Python脚本退出状态码: " + exitCode); } catch (Exception e) { e.printStackTrace(); } } }
确保将/path/to/your/pythonScript.py替换为Python脚本的实际路径，并且你的环境变量中已经配置了Python的路径，这样才能通过python命令来执行脚本。
使用 ProcessBuilder 类
import java.io.*; import java.util.*; public class CallPythonScript { public static void main(String[] args) { try { String pythonScriptPath = "/path/to/your/pythonScript.py"; ProcessBuilder processBuilder = new ProcessBuilder("python", pythonScriptPath); processBuilder.redirectErrorStream(true); // 启动进程 Process process = processBuilder.start(); // 读取进程的输出 BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream())); String line; while ((line = reader.readLine()) != null) { System.out.println(line); } // 等待进程完成 int exitCode = process.waitFor(); System.out.println("Python脚本退出状态码: " + exitCode); } catch (Exception e) { e.printStackTrace(); } } }
同样，确保将/path/to/your/pythonScript.py替换为Python脚本的实际路径。
以上两种方法，如果你的Python脚本需要接收命令行参数，可以简单地将参数添加到command数组或ProcessBuilder的参数列表中。例如：
String[] command = new String[]{"python", pythonScriptPath, "arg1", "arg2", "arg3"};
或者
ProcessBuilder processBuilder = new ProcessBuilder("python", pythonScriptPath, "arg1", "arg2", "arg3");
