How to get IP Add In JAVA like following link

Question

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how to get users ip address in java
Get IP address with URL string? (Java)

link is :

"http://automation.whatismyip.com/n09230945.asp"

the above link return External IP.

I try to make my own code to get my IP like above link

my code is

String my_own_ip =InetAddress.getLocalHost().getHostAddress();

so how to get this IP

in this code return my internal IP

I am in LAN Connection my LAN IP is 192.168.0.109

and external IP is 27.54.180.156

I want 27.54.180.156

Thanks in Advance

Your answer to question http://stackoverflow.com/questions/9286861/get-ip-address-with-url-string-java — Smit, Dec 12 '12 at 04:12
Did you try `InetAddress.getByName("www.external-name-of-your-host.com")`? — Sergey Kalinichenko, Dec 12 '12 at 04:12
hello smit , this above link you posted in that case at time required IP Of URL String but I want my own IP — Hardik Lotiya, Dec 12 '12 at 04:29
your code _will_ return your IP address, so what's the problem? — Mordechai, Dec 12 '12 at 04:33
Use the @ symbol followed by the user name, to send messages to commentators. — Mordechai, Dec 12 '12 at 04:34
@MouseEvent My code return "192.168.0.109" BUT I want "27.54.180.156" — Hardik Lotiya, Dec 12 '12 at 04:35
I don't know much about networking or security, but is it a good idea to be posting your ip like that on a public web site? — Richard JP Le Guen, Dec 12 '12 at 04:38
done by following Links http://stackoverflow.com/questions/10322506/how-to-get-external-ip-succesfully — Hardik Lotiya, Dec 12 '12 at 04:52
http://stackoverflow.com/questions/10322506/how-to-get-external-ip-succesfully — Hardik Lotiya, Dec 12 '12 at 04:56

Richard JP Le Guen · Answer 1 · 2012-12-12T04:16:43.727

3

Don't use getLocalHost() - that will return your local host.

InetAddrsss addy = InetAddress.getByName("www.stackoverflow.com");
System.out.println(addy.getHostAddress());

Note that you'll want to omit the protocol, http://:

InetAddrsss addy = InetAddress.getByName("http://www.stackoverflow.com"); // throws an exception
System.out.println(addy.getHostAddress());

... and equally the path:

InetAddrsss addy = InetAddress.getByName("www.stackoverflow.com/questions"); // throws an exception
System.out.println(addy.getHostAddress());

edited Dec 12 '12 at 04:16

answered Dec 12 '12 at 04:08

Richard JP Le Guen

28,364
7
89
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please refer edited code – Hardik Lotiya Dec 12 '12 at 04:34

score 1 · Answer 2 · edited May 23 '17 at 12:21

The problem is that you assume your computer has access to the external IP address when, in fact, it does not. Only the router and outside connections have access to the IP address.

That being said, your best option is to use a website like http://icanhazip.com or http://checkip.dyndns.org (or the one you supplied, for that matter, http://automation.whatismyip.com/n09230945.asp) and connect to it using an HTTP Get on your Java client, like in this question or this question. Once you get the HTML page back, parse it to find the IP address. This can be done using regex since these are very simple HTML pages that don't require extensive DOM parsing:

String html = ... ;
Pattern pattern = Pattern.compile("\\d{1,3}(\\.\\d{1,3}){3}");
Matcher matcher = pattern.matcher(html);
matcher.find();
String ip = matcher.group(0);

The trick is finding a website with a free API that you can call as many times as you want. The two I listed above don't have any limits as far as I know.

score -1 · Answer 3 · answered Dec 12 '12 at 04:20

-1

You can simply use the bit of code in a jsp page and print it into the body of the document.

<%@page import="java.net.InetAddress" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
 <% String my_own_ip =InetAddress.getLocalHost().getHostAddress();%>
    <%=my_own_ip%>
</body>
</html>

answered Dec 12 '12 at 04:20

Mohamed Haseel

64
9

But that return 192.168.0.109 and my external IP is "27.54.180.156" – Hardik Lotiya Dec 12 '12 at 04:25
This is the exact code the OP provided, put in a JSP - but the OP makes no mention of JSP, or any kind of web programming. On top of all that, the use of scriplets is discouraged. -1 – Richard JP Le Guen Dec 12 '12 at 04:36

How to get IP Add In JAVA like following link

3 Answers3