Java获取本机外网IP的代码，javaip,import java.

Java获取本机外网IP的代码，javaip,import java.

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;}}}