1 package ipconfig;
2
3 import java.io.BufferedReader;
4 import java.io.IOException;
5 import java.io.InputStreamReader;
6 import java.net.MalformedURLException;
7 import java.net.URL;
8 import java.net.URLConnection;
9
10 public class gainInformation {
11 public static void main(String args[]) {
12 String publicip = getip.publicip();
13 int ipindex1 = publicip.indexOf("[");
14 int ipindex2 = publicip.indexOf("]");
15 String ip = publicip.substring(ipindex1+1, ipindex2);
16 System.out.println(ip);
17 int address1 = publicip.indexOf("来自：");
18 int address2 = publicip.indexOf("</center>");
19 String substring = publicip.substring(address1+3,address2);
20 String[] split = substring.split(" ");
21 for (int i = 0; i < split.length; i++) {
22 System.out.println(split[i]);
23 }
24 }
25 }
26 class getip{
27 public static String publicip() {
28 BufferedReader br = null;
29 try {
30 URL url = new URL("http://20019.ip138.com/ic.asp");
31 URLConnection urlconn = url.openConnection();
32 br = new BufferedReader(new InputStreamReader(urlconn.getInputStream()));
33 String buf,get = null;
34 while ((buf = br.readLine()) != null) {
35 get+=buf;
36 }
37 return get;
38 } catch (MalformedURLException e) {
39 e.printStackTrace();
40 } catch (IOException e) {
41 e.printStackTrace();
42 } finally {
43 try {
44 br.close();
45 } catch (IOException e) {
46 e.printStackTrace();
47 }
48 }
49 return null;
50 }
51 }
