废话不多说 直接上代码

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public static String GetNetIp() {
String IP = "";
try {
String address = "http://ip.taobao.com/service/getIpInfo2.php?ip=myip";
URL url = new URL(address);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setUseCaches(false);
connection.setRequestMethod("GET");   //get形式  保证支持重定向
connection.setRequestProperty("user-agent", 
       "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.7 Safari/537.36");  //设置浏览器ua 保证不出现503
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream in = connection.getInputStream();


// 将流转化为字符串
BufferedReader reader = new BufferedReader(new InputStreamReader(in));


String tmpString = "";
StringBuilder retJSON = new StringBuilder();
while ((tmpString = reader.readLine()) != null) {
retJSON.append(tmpString + "");
}


JSONObject jsonObject = new JSONObject(retJSON.toString());
String code = jsonObject.getString("code");
if (code.equals("0")) {
JSONObject data = jsonObject.getJSONObject("data");
IP = data.getString("ip");
Logger.d("commonUtile:", "IP:"+IP);
} else {
IP="";
}
} else {
IP="";
}
} catch (Exception e) {
IP="";
}
return IP;
}