- import java.io.BufferedReader;
- import java.io.InputStreamReader;
- import java.net.URL;
- public class Listip {
- public static void main(String[] args) throws Exception {
- System.out.println("本机的外网IP是:"
- + Listip.getwebIp("http://iframe.ip138.com/ic.asp"));
- }
- public static String getWebIp(String strUrl) {
- try {
- URL url = new URL(strUrl);
- BufferedReader br = new BufferedReader(new InputStreamReader(url
- .openStream()));
- String s = "";
- StringBuffer sb = new StringBuffer("");
- String webContent = "";
- while ((s = br.readLine()) != null) {
- sb.append(s + "\r\n");
- }
- br.close();
- webContent = sb.toString();
- int start = webContent.indexOf("[") + 1;
- int end = webContent.indexOf("]");
- System.out.println("webContent=" + webContent);
- System.out.println("start=" + start);
- System.out.println("end=" + end);
- if (start < 0 || end < 0) {
- return null;
- }
- webContent = webContent.substring(start, end);
- return webContent;
- } catch (Exception e) {
- e.printStackTrace();
- return "error open url:" + strUrl;
- }
- }
- }
来源: http://www.phpxs.com/code/1002520/