jsp获取服务端的访问信息

• 获取服务端访问信息

    public static String getUrl(HttpServletRequest request){
        String url = "";  

        if(request != null){
            String scheme       = request.getScheme();
            String host         = request.getLocalAddr();
            int post        = request.getLocalPort();
            String contextPath  = request.getContextPath();  

            url = scheme + "://" + host + ":" + String.valueOf(post) + "/" + contextPath + "/";
        }
        return url;
    }