1 import java.io.BufferedReader;  2   3 import java.io.BufferedWriter;  4   5 import java.io.File;  6   7 import java.io.IOException;  8   9 import java.io.InputStream; 10  11 import java.io.InputStreamReader; 12  13 import java.io.OutputStreamWriter; 14  15 import java.util.ArrayList; 16  17 import java.util.Arrays; 18  19 import java.util.Iterator; 20  21 import java.util.List; 22  23 import java.util.Map; 24  25   26  27 /** 28  29  * 在J2SE5.0之前使用Runtime的exec方法执行本地命令. 30  31  * 在J2Se5.0之后,可以使用ProcessBuilder执行本地命令 32  33  * 它提供的功能更加丰富,能够设置设置工作目录、环境变量等 34  35  * 本例PorcessBuilder执行Windows操作系统的"ipconfig/all"命令,获取本机网卡的MAC地址 36  37 */ 38  39 /**关键技术剖析 40  41  * 用本命令名和命令的参数选项构造ProcessBuilder对象,它的start方法执行命令,启动一个进程,返回一个Process对象 42  43  * ProcessBuilder的environment方法获得运行进程的环境变量,得到一个Map,可以修改环境变量 44  45  * ProcessBuilder的directory方法切换工作目录 46  47  * Process的getInputStream方法获得进程的标准输出流,getErrorStream方法获得进程的错误输出流 48  49 */ 50  51 public class UsingProcessBuilder { 52  53        /**获取Windows系统下的网卡的MAC地址*/ 54  55        public static List<String> getPhysicalAddress(){ 56  57               Process p = null; 58  59               List<String> address = new ArrayList<String>(); //物理网卡列表 60  61               try{ 62  63                      p = new ProcessBuilder("ipconfig","/all").start(); //执行ipconfig/all命令 64  65               }catch(IOException e){ 66  67                      return address; 68  69               } 70  71               byte[] b = new byte[1024]; 72  73               int readbytes = -1; 74  75               StringBuffer sb = new StringBuffer(); 76  77               //读取进程输出值 78  79               //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 80  81               InputStream in = p.getInputStream(); 82  83               try{ 84  85                      while((readbytes = in.read(b)) != -1){ 86  87                             sb.append(new String(b,0,readbytes)); 88  89                      } 90  91               }catch(IOException e1){ 92  93               }finally { 94  95                      try{ 96  97                             in.close(); 98  99                      }catch (IOException e2){100 101                      }102 103               }104 105               //以下是分析输出值,得到物理网卡106 107               String rtValue =http://www.mamicode.com/ sb.toString();108 109               int i = rtValue.indexOf("Physical Address. . . . . . . . . :");110 111               while (i > 0){112 113                      rtValue = http://www.mamicode.com/rtValue.substring(i +"Physical Address. . . . . . . . . :".length());114 115                      address.add(rtValue.substring(1,18));116 117                      i = rtValue.indexOf("Physical Address. . . . . . . . . :");118 119               }120 121               return address;122 123        }124 125        /**执行自定义的一个命令,该命令放在C:/temp下,并且需要两个环境变量的支持*/126 127        public static boolean executeMyCommand1(){128 129               //创建系统进程创建器130 131               ProcessBuilder pb = new ProcessBuilder("myCommand","myArg1","myArg2");132 133               Map<String, String> env = pb.environment(); //获得进程的环境134 135               //设置和去除环境变量136 137               env.put("VAR1", "myValue");138 139               env.remove("VAR0");140 141               env.put("VAR2", env.get("VAR1") + ";");142 143               //迭代环境变量,获取属性名和属性值144 145               Iterator it=env.keySet().iterator();146 147               String sysatt = null;148 149               while(it.hasNext())150 151               {152 153                      sysatt = (String)it.next();154 155                      System.out.println("System Attribute:"+sysatt+"="+env.get(sysatt));156 157               }158 159               pb.directory(new File("C:/temp"));160 161               try{162 163                      Process p = pb.start(); //得到进程实例164 165                      //等待进程执行完毕166 167                      if(p.waitFor() != 0){168 169                             //如果进程运行结果不为0,表示进程是错误退出的170 171                             //获得进程实例的错误输出172 173                             InputStream error = p.getErrorStream();174 175                             //do something176 177                      }178 179                      InputStream sdin = p.getInputStream(); //获得进程实例的标准输出180 181                      //do something182 183               }catch(IOException e){184 185               }catch(InterruptedException e){186 187               }188 189               return true;190 191        }192 193        public static void executeMyCommand2(){194 195               ProcessBuilder pb = null;196 197               String sysatt = null;198 199               try200 201         {202 203             //创建一个进程示例204 205             pb = new ProcessBuilder("cmd.exe");206 207             //获取系统参数并打印显示208 209             Map<String, String> env = pb.environment();210 211             Iterator it=env.keySet().iterator();212 213             while(it.hasNext())214 215             {216 217                  sysatt = (String)it.next();218 219                 System.out.println("System Attribute:"+sysatt+"="+env.get(sysatt));220 221             }222 223             //设置工作目录224 225             pb.directory(new File("d://myDir"));226 227             Process p = pb.start();228 229             //将要执行的Windows命令写入230 231             BufferedWriter bw=new BufferedWriter(newOutputStreamWriter(p.getOutputStream()));232 233             //‘/r/n‘是必须写入的     234 235             bw.write("test.bat /r/n");236 237             bw.write("ping -t www.yahoo.com.cn /r/n");238 239             //flush()方法是必须调用的240 241             bw.flush();242 243             //将执行结果打印显示244 245             InputStream is = p.getInputStream();246 247             InputStreamReader isr = new InputStreamReader(is, "GBK");248 249             BufferedReader br = new BufferedReader(isr);250 251             String line;252 253             while ((line = br.readLine()) != null)254 255             {256 257                 System.out.println(line);258 259             }260 261         }262 263         catch (Exception e)264 265         {266 267             e.printStackTrace();268 269         }270 271        }272 273        public static void main(String[] args){274 275               List<String> address = UsingProcessBuilder.getPhysicalAddress();276 277               for(String add : address){278 279                      System.out.printf("物理网卡地址: %s%n",add);280 281               }282 283               executeMyCommand1();284 285               executeMyCommand2();286 287        }288 289 }