android获取wifi外网ip的方法

<span style="font-size:18px;">	// 获取外网IP
public static String GetNetIp() {
URL infoUrl = null;
InputStream inStream = null;
try {
// http://iframe.ip138.com/ic.asp // infoUrl = new URL("http://city.ip138.com/city0.asp");
infoUrl = new URL("http://ip38.com");
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();
// 从反馈的结果中提取出IP地址
// int start = strber.indexOf("[");
// Log.d("zph", "" + start);
// int end = strber.indexOf("]", start + 1);
// Log.d("zph", "" + end);
line = strber.substring(378, 395);
line.replaceAll(" ", "");
return line;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}</span>

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);

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 + "\n");
}

JSONObject jsonObject = new JSONObject(retJSON.toString());
String code = jsonObject.getString("code");
if (code.equals("0"))
{
JSONObject data = jsonObject.getJSONObject("data");
IP = data.getString("ip") + "(" + data.getString("country")
+ data.getString("area") + "区"
+ data.getString("region") + data.getString("city")
+ data.getString("isp") + ")";

Log.e("提示", "您的IP地址是：" + IP);
}
else
{
IP = "";
Log.e("提示", "IP接口异常，无法获取IP地址！");
}
}
else
{
IP = "";
Log.e("提示", "网络连接异常，无法获取IP地址！");
}
}
catch (Exception e)
{
IP = "";
Log.e("提示", "获取IP地址时出现异常，异常信息是：" + e.toString());
}
return IP;
}