java中调用web中的jsp或servlet去通知它们做一些操作

java中调用web中的jsp或servlet去通知它们做一些操作，这里可以返回远程流（参考：下载远程文件例子），

或者仅仅通知，如下

try
        {
            String url = "http://ip:port/myweb/test/getInterface.jsp";
            URL portalUrl = new URL(url);
            HttpURLConnection urlConnection = (HttpURLConnection)portalUrl.openConnection();
            urlConnection.setRequestMethod("POST");
            urlConnection.connect();
            urlConnection.getInputStream();
            System.out.println("notice mywebto reread config!");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }