主要原理就是調(diào)用外網(wǎng)api接口來抓取結(jié)果，代碼如下：
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://ip138.com");
infoUrl = new URL("http://city.ip138.com/ip2city.asp");
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();
// 從反饋的結(jié)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(start + 1, end);
// line = strber.substring(378, 395);
// line.replaceAll(" ", "");
return line;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
