Android(安卓)查看本机外网IP

   String GetNetIp(String ipaddr){        URL infoUrl = null;        InputStream inStream = null;        try {            infoUrl = new URL(ipaddr);            URLConnection connection = infoUrl.openConnection();            HttpURLConnection httpConnection = (HttpURLConnection)connection;            int responseCode = httpConnection.getResponseCode();            if(responseCode == HttpURLConnection.HTTP_OK)              {                     inStream = httpConnection.getInputStream();                  BufferedReader reader = new BufferedReader(new InputStreamReader(inStream,"utf-8"));               StringBuilder strber = new StringBuilder();               String line = null;               while ((line = reader.readLine()) != null)                    strber.append(line + "\n");               inStream.close();               return strber.toString();                          }        } catch (MalformedURLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }       return "";    }

查看 System.out.println((GetNetIp("http://fw.qq.com/ipaddress")));
加权限 <uses-permission android:name="android.permission.INTERNET"></uses-permission>
通过获取http://fw.qq.com/ipaddress网页取得外网IP

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