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")));
加許可權 <uses-permission android:name="android.permission.INTERNET"></uses-permission>
通過擷取http://fw.qq.com/ipaddress網頁取得外網IP