java web判斷伺服器是否是本機

1,如何擷取浏覽器的ip

/*** 

     * 擷取用戶端ip位址(可以穿透代理) 

     * @param request 

     * @return 

     */  

    public static string getclientipaddr(httpservletrequest request) {    

        string ip = request.getheader("x-forwarded-for");    

        if (ip == null || ip.length() == 0 || "unknown".equalsignorecase(ip)) {    

            ip = request.getheader("proxy-client-ip");    

        }    

            ip = request.getheader("wl-proxy-client-ip");    

            ip = request.getheader("http_x_forwarded_for");    

            ip = request.getheader("http_x_forwarded");    

            ip = request.getheader("http_x_cluster_client_ip");    

            ip = request.getheader("http_client_ip");    

            ip = request.getheader("http_forwarded_for");    

            ip = request.getheader("http_forwarded");    

            ip = request.getheader("http_via");    

            ip = request.getheader("remote_addr");    

            ip = request.getremoteaddr();    

        return ip;    

    }  

    public static string getipaddr(httpservletrequest request) {  

        string ip = request.getheader("x-real-ip");  

        if (null != ip && !"".equals(ip.trim())  

                && !"unknown".equalsignorecase(ip)) {  

            return ip;  

        }  

        ip = request.getheader("x-forwarded-for");  

            // get first ip from proxy ip  

            int index = ip.indexof(',');  

            if (index != -1) {  

                return ip.substring(0, index);  

            } else {  

                return ip;  

            }  

        return request.getremoteaddr();  

2,如何判斷伺服器是否是本機

     * 伺服器是否是本機 

    public static boolean islocalip(httpservletrequest request){  

        string ip=webservletutil.getclientipaddr(request);  

        return ip.equals("127.0.0.1")||ip.equals("localhost")||ip.equals("0:0:0:0:0:0:0:1");  

 3,應用:

     * favicon.ico  

     * @throws ioexception  

    @requestmapping(value = "/favicon.ico")  

    public responseentity<byte[]> faviconico(httpservletrequest request) throws ioexception {  

        httpheaders headers = new httpheaders();  

        headers.setcontenttype(mediatype.image_png);  

        string faviconiconame="sms-4.ico";  

        headers.set(constant2.content_disposition,webservletutil.getcontentdisposition(true, faviconiconame));  

        ///home/whuang/software/apache-tomcat-7.0.53/webapps/root/  

        string webapppath=null;  

        if(webservletutil.islocalip(request)){//伺服器在本機(通路ip為127或localhost)  

            webapppath=webservletutil.getrealpath(request);  

        }else{  

            webapppath=dictionaryparam.get(constant2.dictionary_group_global_setting, "web-inf_loc");  

        return new responseentity<byte[]>(fileutils.getbytes4file(  

                webapppath  

                +"web-inf/static/img/"+faviconiconame),  

                                          headers, httpstatus.created);  

4,如何擷取伺服器部署的本地路徑

public static string getrealpath(httpservletrequest request) {  

        return getrealpath(request,  "\\");  

    /** 

     * 擷取相對位址的絕對位址 

     *  

     * @param relativepath 

    public static string getrealpath(httpservletrequest request, string relativepath) {  

        return request.getsession().getservletcontext().getrealpath(relativepath);