如何将字符串与IP和端口分开？

Question

I have such a line:

176.32.37.27:777754.38.156.202:777751.68.208.5:7777

How can the cycle inferred from this string of IP ports by using the split function or similar? To make it so:

176.32.37.27:7777 54.38.156.202:7777 51.68.208.5:7777

the ports are the same only because they have 4 digits

Answer 1

Since you know your port's length will always be 4, you can split based on a lookbehind that takes the colon and 4 digits:

String test = "176.32.37.27:777754.38.156.202:777751.68.208.5:7777";
System.out.println(
   Arrays.toString(
       test.split("(?<=:\\d{4})")
   )
);

Output

[176.32.37.27:7777, 54.38.156.202:7777, 51.68.208.5:7777]

See also

Lookbehind in Java pattern API .

Answer 2

You can use the below code for split the IP Address.

String str = "176.32.37.27:777754.38.156.202:777751.68.208.5:7777";

String ipAdds[] = str.split("(?<=:\\d{4})");

for (String ipAdd: ipAdds)
     System.out.println(ipAdd);