jsp中如何写Java类并且可以运行

import java.io.*;

public class JavaRunCommand {

public static void main(String args[]) {

    String s = null;
    String file="shoes10059.stl";
    try {
         
    // run the Unix "slic3r —load config_m2.ini  xxxx.stl" command
        // using the Runtime exec method:
        Process p = Runtime.getRuntime().exec("C:/Program Files (x86)/Slic3r/slic3r-console --load D:/m2/config_m2.ini"+" "+"D:/m2/"+file);
         
        BufferedReader stdInput = new BufferedReader(new
             InputStreamReader(p.getInputStream()));

        BufferedReader stdError = new BufferedReader(new
             InputStreamReader(p.getErrorStream()));

        // read the output from the command
        System.out.println("Here is the standard output of the command:\n");
        while ((s = stdInput.readLine()) != null) {
           System.out.println(s);

         

          // System.out.println(s.lastIndexOf(":")+1);
                 
        }
         
        // read any errors from the attempted command
        System.out.println("Here is the standard error of the command (if any):\n");
        while ((s = stdError.readLine()) != null) {
            System.out.println(s);
        }
         
        System.exit(0);
    }
    catch (IOException e) {
        System.out.println("exception happened - here's what I know: ");
    
        e.printStackTrace();
        System.exit(-1);
    }
}

private static int lastIndexOf(String string) {
    // TODO Auto-generated method stub
    return 0;
}

}
我要在前端点击一个按钮就执行这个类，怎么才可以实现？求大神解决！

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提交一个post就可以了

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第一、Web应用是不需要main函数作为程序入口的。
第二、提供一个思路，题主可以写一个Servlet来实例化你的类。前端提交表单给Servlet。或者直接把这段代码改成Servlet。
第三、建议题主先补补课。