1 **
2 * 能否ping通IP地址
3 * @param server IP地址
4 * @param timeout 超时时长
5 * @return true能ping通
6 */
7 public static boolean pingServer(String server, int timeout) {
8 BufferedReader in = null;
9 Runtime r = Runtime.getRuntime();
10
11 String pingCommand = "ping " + server + " -n 1 -w " + timeout;
12 try {
13 Process p = r.exec(pingCommand);
14 if (p == null) {
15 return false;
16 }
17 in = new BufferedReader(new InputStreamReader(p.getInputStream()));
18 String line = null;
19 while ((line = in.readLine()) != null) {
20 if (line.startsWith("Reply from")) {
21 return true;
22 }
23 }
24
25 } catch (Exception ex) {
26 ex.printStackTrace();
27 return false;
28 } finally {
29 try {
30 in.close();
31 } catch (IOException e) {
32 e.printStackTrace();
33 }
34 }
35 return false;
36 }
来自 :http://kiral.iteye.com/blog/213487
