java怎么调用python脚本

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在 Java 中调用 Python 脚本有多种方法，下面介绍两种常用的方法：

使用 ProcessBuilder 类：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {public static void main(String[] args) throws IOException {ProcessBuilder pb = new ProcessBuilder("python", "path/to/your/python/script.py");
        Process process = pb.start();

        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {System.out.println(line);
        }

        int exitCode;
        try {exitCode = process.waitFor();
        } catch (InterruptedException e) {e.printStackTrace();
        }

        System.out.println("Python script exited with code: " + exitCode);
    }
}

这种方法通过创建一个 ProcessBuilder 对象来执行 Python 脚本，并读取 Python 脚本输出的结果。可以使用 ProcessBuilder 的start()方法来启动 Python 脚本，并使用 getInputStream() 方法获取脚本输出的结果。

使用 Runtime 类：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {public static void main(String[] args) throws IOException {String command = "python path/to/your/python/script.py";
        Process process = Runtime.getRuntime().exec(command);

        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {System.out.println(line);
        }

        int exitCode;
        try {exitCode = process.waitFor();
        } catch (InterruptedException e) {e.printStackTrace();
        }

        System.out.println("Python script exited with code: " + exitCode);
    }
}