执行命令工具类

 

package common;

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

/***
 * create by zipon 2018-09-10
 */

public class ExecCmdUtils {

    /***
     * 根据系统执行命令，只需要传入命令，返回所有命令返回的信息
     * @param cmd
     * @return
     * @throws IOException
     */
    public static String execCmd(String cmd) throws IOException {
        String os = System.getProperty("os.name");
        String[] preparecmd = {};
        if(os!=null && os.toLowerCase().indexOf("windows")>=0) {
            preparecmd = new String[]{"cmd", "/C", cmd};
        }else if (os!=null && os.toLowerCase().indexOf("linux")>=0){
            preparecmd = new String[]{"/bin/sh", "-c", cmd};
        }else {
            return null;
        }
        Runtime rt = Runtime.getRuntime();
        Process p = rt.exec(preparecmd);
        //取得命令结果的输出流
        InputStream fis=p.getInputStream();
        //用一个读输出流类去读
        InputStreamReader isr=new InputStreamReader(fis,"GBK");
        //用缓冲器读行
        BufferedReader br=new BufferedReader(isr);
        String line=null;
        String result = "";
        //直到读完为止
        while((line=br.readLine())!=null)
        {
            result = result+line+"\n";
        }
        //去掉最后一个换行符
        result = result.substring(0,result.length()-2);
        System.out.println("执行结果：\n"+result);
        return result;
    }
}