从Java中解析ping结果的时间部分

我设法修改程序以ping对等计算机并获取ping计数。 如何从ping计数结果中实时解析time = ?ms ？

码：

  public static void main(String[] args) { String ip = "192.168.1.1 -n 10"; String pingResult = ""; String pingCmd = "ping " + ip; try{ Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); pingResult += inputLine; } in.close(); } catch(Exception e) { System.out.println(e); } } 

输出：

 Reply from 192.168.1.1: bytes=32 time=2ms TTL=64 Reply from 192.168.1.1: bytes=32 time=4ms TTL=64 Reply from 192.168.1.1: bytes=32 time=2ms TTL=64 Reply from 192.168.1.1: bytes=32 time=2ms TTL=64 Reply from 192.168.1.1: bytes=32 time=20ms TTL=64 Reply from 192.168.1.1: bytes=32 time=9ms TTL=64 Reply from 192.168.1.1: bytes=32 time=3ms TTL=64 Reply from 192.168.1.1: bytes=32 time=2ms TTL=64 Reply from 192.168.1.1: bytes=32 time=2ms TTL=64 Reply from 192.168.1.1: bytes=32 time=3ms TTL=64 Ping statistics for 192.168.1.1: Packets: Sent = 10, Received = 10, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 2ms, Maximum = 20ms, Average = 4ms 

我需要声明一个变量并使用BufferedReader将“time =？ms”写入文本文件中吗？

我正在寻求提示，谢谢。

Answer 1

尝试这个：

 Pattern pattern = Pattern.compile("time=(\\d+)ms"); Matcher m = null; while ((inputLine = in.readLine()) != null) { m = pattern.matcher(inputLine); if (m.find()) { System.out.println(m.group(1)); } } 

从输出的模式中输出毫秒值。

Answer 2

你可以使用indexOf ：

 pingResult = pingResult.substring(pingResult.indexOf("time=")); 

然后删除TTL ：

 pingResult = pingResult.substring(0, pingResult.indexOf("TTL")); 

因此，最终的代码：

 Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); pingResult += inputLine; } in.close(); pingResult = pingResult.substring(pingResult.indexOf("time=")).substring(0, pingResult.indexOf("TTL"));