获取本机外网ip地址

  public static String getIP()  {
        String ip = "http://pv.sohu.com/cityjson?ie=utf-8";

        String inputLine = "";
        String read = "";
        String toIp="";
        try {
            URL url = new URL(ip);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            while ((read = in.readLine()) != null) {
                inputLine += read;
            }
            String ObjJson=inputLine.substring(inputLine.indexOf("=")+1,inputLine.length()-1);
//            System.out.println(ObjJson);
            JSONObject jsonObj= JSON.parseObject(ObjJson);
            toIp=jsonObj.getString("cip");
//            throw new Exception();
        } catch (Exception e) {
            toIp="";
        }
        return toIp;
    }

获取服务器IP地址

 /**
     * 根据域名获取ip地址
     */
    public static String getIfIP() {
        String toIp="";
        try{
            String pathName="baidu.com";//这里没有进行支持https协议的，可以自行进行切割字符串
            InetAddress address =InetAddress.getAllByName(pathName)[0];
            toIp=address.getHostAddress();
        }catch (Exception e){
            toIp="";
        }
        return toIp;
    }