ProcessBuilder调用外部脚本

 import java.io.BufferedReader;

 import java.io.BufferedWriter;

 import java.io.File;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.OutputStreamWriter;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 public class UsingProcessBuilder {

  public static  String getCommandResult(List<String> cmds){

   String res="";

   ProcessBuilder pb = null;

   Process p = null;

         try{

            pb= new ProcessBuilder(cmds);

            pb.redirectErrorStream(true);

           p = pb.start();          

       }catch(IOException e){

           //记录报错日志--add

              return res;

       }

          byte[] b = new byte[1024];

          int readbytes = -1;

          StringBuffer sb = new StringBuffer();

          //读取进程输出值

          //在JAVA IO中,输入输出是针对JVM而言,读写是针对外部数据源而言

          InputStream in = p.getInputStream();

          try{

                 while((readbytes = in.read(b)) != -1){

                        sb.append(new String(b,0,readbytes));

                        //System.out.printf("%s",readbytes);

                 }

          }catch(IOException e1){

          }finally {

                 try{

                        in.close();

                 }catch (IOException e2){

                 }

          }

          res=sb.toString();

          //等待进程退出

    try{

       int i=p.waitFor();   

    }catch(InterruptedException e){

          }

   return res;

  };

  /**

   * @param args

   */

  public static void main(String[] args) {

   // TODO Auto-generated method stub

      List<String> cmds = new ArrayList<String>();

 //*****************************************************************

     cmds.add("cmd.exe");

     cmds.add("/c");

     cmds.add("ping www.yahoo.com.cn");//等同于这两个参数分开

     String res=UsingProcessBuilder.getCommandResult(cmds);

     System.out.printf("%s",res);

  }

 }