Java代码 
- **
- * 能否ping通IP地址
- * @param server IP地址
- * @param timeout 超时时长
- * @return true能ping通
- */
- public static boolean pingServer(String server, int timeout) {
- BufferedReader in = null;
- Runtime r = Runtime.getRuntime();
- String pingCommand = "ping " + server + " -n 1 -w " + timeout;
- try {
- Process p = r.exec(pingCommand);
- if (p == null) {
- return false;
- }
- in = new BufferedReader(new InputStreamReader(p.getInputStream()));
- String line = null;
- while ((line = in.readLine()) != null) {
- if (line.startsWith("Reply from")) {
- return true;
- }
- }
- } catch (Exception ex) {
- ex.printStackTrace();
- return false;
- } finally {
- try {
- in.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- return false;
- }