[转载]GoogleReader用户登陆验证C#具体实现

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[转载]GoogleReader用户登陆验证C#具体实现 – 编程点滴 – 博客园.

继前两篇文章

google reader api:http://www.cnblogs.com/mybear/archive/2011/02/18/1957704.html

GoogleReader用户登陆验证原理:http://www.cnblogs.com/mybear/archive/2011/02/18/1957769.html

相信大家对GoogleReader api已经有所认识,下面就讲下GoogleReader用户登陆验证C#具体实现

1.创建HttpWebRequest

private HttpWebRequest CreateRequest(string url) { HttpWebRequest webRequest = WebRequest.Create(url) as HttpWebRequest; IWebProxy defaultParoxy = HttpWebRequest.GetSystemWebProxy(); webRequest.Proxy = defaultParoxy; webRequest.UserAgent = "GoogleReader for Windows/"+Assembly.GetExecutingAssembly().GetName().Version; webRequest.CookieContainer = _CookieContainer; webRequest.ServicePoint.Expect100Continue = false; webRequest.Timeout = 20000; if (_isLoginIn) webRequest.Headers.Add("Authorization", "GoogleLogin auth=" + _LoginAuth[2].Split('=')[1]); return webRequest; }

2.使用HttpPost传递登陆参数

private string PostGoogleLogin(HttpWebRequest webRequest,string queryString) { string ResponseString = string.Empty; webRequest.ContentType = "application/x-www-form-urlencoded"; webRequest.Method = "POST"; byte[] QueryData = Encoding.UTF8.GetBytes(queryString); webRequest.ContentLength = QueryData.Length; try { using (Stream stream = webRequest.GetRequestStream()) { stream.Write(QueryData, 0, QueryData.Length); stream.Close(); ResponseString = GetResponseString(webRequest); } } catch (Exception ex) { LoginError += ex.ToString() + "\r\n"; } return ResponseString; }

3.传递用户名和密码实现登陆

public void GoogleLogin(string email,string password) { string SID_ID = string.Empty; string responseData = string.Empty; List<Parameter> queryParams = new List<Parameter>(); queryParams.Add(new Parameter("service", "reader")); queryParams.Add(new Parameter("Email", Uri.EscapeDataString(email))); queryParams.Add(new Parameter("Passwd", Uri.EscapeDataString(password))); queryParams.Add(new Parameter("source", "Mobile Newspaper/0.1")); queryParams.Add(new Parameter("continue", "http://www.google.com")); HttpWebRequest webRequest=CreateRequest("https://www.google.com/accounts/ClientLogin"); responseData = PostGoogleLogin(webRequest, HttpUtil.GetQueryParamters(queryParams)); string pattern="SID=(.*)"; Regex reg = new Regex(pattern, RegexOptions.IgnoreCase); if (reg.IsMatch(responseData)) { _isLoginIn = true; _LoginAuth = responseData.Split('\n'); SID_ID = reg.Match(responseData).Groups[1].Value; _CookieContainer.Add(new Cookie("SID",SID_ID,"/",".google.com")); } }

至此,google用户登陆验证完成了!我们可以根据googlereader提供的API打造一个属于自己的客户端RSS订阅器!

比如,我们要获得已阅读的20篇文章:可以用httpget的方法访问:http://www.google.com/reader/atom/user/[user ID]/state/com.google/read

[user ID]可以使用“-”来代表当前登陆的用户,返回的记录是XML数据格式:

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