b/s类型的项目我们可以使用前文的方法很容易就做了集成，如果是c/s类型的应用呢？还有些比较特殊b/s类型的项目，既希望能够集成sso，又希望能保留自己的登录画面和本地用户，这里就需要用到官方提供的REST协议。

这一段尝试过程很顺利，官方的文档虽然简单到不行不过没啥大毛病，笔者尝试用C#实现了一下一次通过，小伙伴们可以很轻松的参照C#代码码出其他语言的代码，因为只是做几次简单的http请求。

private void btnClick_Click(object sender, EventArgs e){//获取TGTstring tid = HtmlPost("https://sso.xxx.com/cas/v1/tickets", "username=zhangsan&password=1", "POST");//返回的格式是html，需要解析抽取TGTRegex regex = new Regex("(?<=tickets/).+?(?=\")", RegexOptions.Singleline);tid = regex.Match(tid).Value;//获取服务（客户端惟一url，可以捏造但必须惟一）凭据，有效期1.8秒string data = "service=" + HttpUtility.UrlEncode("https://www.xxx.com");string ticket = HtmlPost("https://sso.xxx.com/cas/v1/tickets/" + tid, data, "POST");//凭借客户端惟一url和它的凭据获取用户凭据string content = HtmlGet("https://sso.xxx.com/cas/p3/serviceValidate?service=https://www.xxx.com&ticket=" + ticket);//返回的content是xml格式的，需要自行解析//注销凭据string result = HtmlPost("https://sso.xxx.com/cas/v1/tickets/" + tid, "", "DELETE");}string HtmlPost(string url, string data, string method){HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);req.ContentType = "application/x-www-form-urlencoded";req.Method = method;byte[] form = Encoding.Default.GetBytes(data);req.ContentLength = form.Length;req.GetRequestStream().Write(form, 0, form.Length);req.GetRequestStream().Close();HttpWebResponse rep = (HttpWebResponse)req.GetResponse();StreamReader sr = new StreamReader(rep.GetResponseStream());string str = sr.ReadToEnd();sr.Close();rep.GetResponseStream().Close();return str;}string HtmlGet(string url){WebClient wc = new WebClient();wc.Encoding = Encoding.UTF8;return wc.DownloadString(url);}