JSP中如何统计ping主机的次数？

发布于 2024-12-24 17:13:37 字数 461 浏览 0 评论 0原文

我的代码在这里，我从中得到的结果是真还是假，无论它是否 ping 到我在其中提到的主机，

  try
  {
      InetAddress address = InetAddress.getByName("192.168.1.125");
      boolean reachable=address.isReachable(10000));
      out.print(PingHost.DrawTable());
      out.print("Is host reachable? " + reachable);
  }
  catch(Exception e)
  {
      out.print(e.printStackTrace());
  }

我想计算它尝试 ping 主机的次数（如果它没有完全成功 ping 通）第一次，最大 ping 次数为 10

希望您的建议

提前致谢

原文

My code is here from which I get result either true or false that weather it ping to the host I mention in it or not,

  try
  {
      InetAddress address = InetAddress.getByName("192.168.1.125");
      boolean reachable=address.isReachable(10000));
      out.print(PingHost.DrawTable());
      out.print("Is host reachable? " + reachable);
  }
  catch(Exception e)
  {
      out.print(e.printStackTrace());
  }

I want to count the no of times it try to ping the host if it is not ping success fully fro the first time and the max no of count for ping would be 10

Hopes for your suggestions

Thanks in Advance

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厌味 2024-12-31 17:13:37

final static int MAX_PINGS = 10;
final static int TIMEOUT= 10000;
int countFailed = 0;

for (int i=0; i<MAX_PINGS; i++){
    if (address.isReachable(TIMEOUT)){
         System.out.println("Pinged successfully");
         break;
    }else{
         countFailed++;
    }
 }

注意：给出 10000 毫秒（10 秒）作为超时时间太多了。我建议应该在 1000 毫秒左右。

final static int MAX_PINGS = 10;
final static int TIMEOUT= 10000;
int countFailed = 0;

for (int i=0; i<MAX_PINGS; i++){
    if (address.isReachable(TIMEOUT)){
         System.out.println("Pinged successfully");
         break;
    }else{
         countFailed++;
    }
 }

Note: giving 10000ms (10 seconds) as timeout is too much. I suggest it should be around 1000 ms.

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能否归途做我良人 2024-12-31 17:13:37

假设 address.isReachable(10000)) 正在执行 ping，并返回 true 或 false，那么您想要这样的东西：

int counter = 0;

do
{
    counter ++; 
    if(address.isReachable(10000))
    {
        break;
    }
}
while (counter < 10)

// now counter contains the number of attempts

我认为您最好找到一本关于编程的好书，以提出与此类似的解决方案不应该是您需要询问的问题。

Assuming that address.isReachable(10000)) is doing the ping, and returns true or false, then you want something like this:

int counter = 0;

do
{
    counter ++; 
    if(address.isReachable(10000))
    {
        break;
    }
}
while (counter < 10)

// now counter contains the number of attempts

I think you'd do well to find a good book on programming, to come up with a solution similar to this should not be something you need to ask about.

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