private static String getMyIP() throws IOException {
        InputStream ins = null;
        try {
            String l = "http://1212.ip138.com/ic.asp";
            URL url = new URL(l);
            URLConnection con = url.openConnection();
            ins = con.getInputStream();
            InputStreamReader isReader = new
 
 InputStreamReader(ins, "gb2312");
            BufferedReader bReader = new BufferedReader(isReader);
            StringBuffer webContent = new StringBuffer();
            String str = null;
            while ((str = bReader.readLine()) != null) {
                webContent.append(str);
            }
            System.out
 
.println(webContent);
            int start = webContent.indexOf("[") + 1;
            int end = webContent.indexOf("]");
            return webContent.substring(start, end);
        } finally {
            if (ins != null) {
                ins.close();
            }
        }
    }