不管是騰訊還是新浪，查看他們的API，PHP都是有完整的接口，但對C#支持似乎都不是那么完善，都沒有，騰訊是完全沒有，新浪是提供第三方的，而且后期還不一定升級，NND，用第三方的動輒就一個類庫，各種配置還必須按照他們約定的寫，煩而且亂，索性自己寫，后期的擴展也容易，看過接口后，開始以為很難，參考了幾個源碼之后發(fā)現(xiàn)也不是那么難，無非是GET或POST請求他們的接口獲取返回值之類的，話不多說，這里只提供幾個代碼共參考，拋磚引玉了。。。
我這個寫法的特點是，用到了Session，使用對象實例化之后調(diào)用 Login() 跳轉(zhuǎn)到登錄頁面，在回調(diào)頁面調(diào)用Callback() 執(zhí)行之后，可以從Session也可以寫獨立的函數(shù)（如：GetOpenID()）中獲取access_token或用戶的唯一標識，以方便做下一步的操作。所謂綁定就是把用戶的唯一標識取出，插入數(shù)據(jù)庫，和帳號綁定起來。
1.首先是所有OAuth類的基類，放一些需要公用的方法
public abstract class BaseOAuth
{
public HttpRequest Request = HttpContext.Current.Request;
public HttpResponse Response = HttpContext.Current.Response;
public HttpSessionState Session = HttpContext.Current.Session;
public abstract void Login();
public abstract string Callback();
#region 內(nèi)部使用函數(shù)
/// summary>
/// 生成唯一隨機串防CSRF攻擊
/// /summary>
/// returns>/returns>
protected string GetStateCode()
{
Random rand = new Random();
string data = DateTime.Now.ToString("yyyyMMddHHmmssffff") + rand.Next(1, 0xf423f).ToString();
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] md5byte = md5.ComputeHash(UTF8Encoding.Default.GetBytes(data));
return BitConverter.ToString(md5byte).Replace("-", "");
}
/// summary>
/// GET請求
/// /summary>
/// param name="url">/param>
/// returns>/returns>
protected string GetRequest(string url)
{
HttpWebRequest httpWebRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
httpWebRequest.Method = "GET";
httpWebRequest.ServicePoint.Expect100Continue = false;
StreamReader responseReader = null;
string responseData;
try
{
responseReader = new StreamReader(httpWebRequest.GetResponse().GetResponseStream());
responseData = responseReader.ReadToEnd();
}
finally
{
httpWebRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
}
return responseData;
}
/// summary>
/// POST請求
/// /summary>
/// param name="url">/param>
/// param name="postData">/param>
/// returns>/returns>
protected string PostRequest(string url, string postData)
{
HttpWebRequest httpWebRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
httpWebRequest.Method = "POST";
httpWebRequest.ServicePoint.Expect100Continue = false;
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
//寫入POST參數(shù)
StreamWriter requestWriter = new StreamWriter(httpWebRequest.GetRequestStream());
try
{
requestWriter.Write(postData);
}
finally
{
requestWriter.Close();
}
//讀取請求后的結(jié)果
StreamReader responseReader = null;
string responseData;
try
{
responseReader = new StreamReader(httpWebRequest.GetResponse().GetResponseStream());
responseData = responseReader.ReadToEnd();
}
finally
{
httpWebRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
}
return responseData;
}
/// summary>
/// 解析JSON
/// /summary>
/// param name="strJson">/param>
/// returns>/returns>
protected NameValueCollection ParseJson(string strJson)
{
NameValueCollection mc = new NameValueCollection();
Regex regex = new Regex(@"(\s*\""?([^""]*)\""?\s*\:\s*\""?([^""]*)\""?\,?)");
strJson = strJson.Trim();
if (strJson.StartsWith("{"))
{
strJson = strJson.Substring(1, strJson.Length - 2);
}
foreach (Match m in regex.Matches(strJson))
{
mc.Add(m.Groups[2].Value, m.Groups[3].Value);
}
return mc;
}
/// summary>
/// 解析URL
/// /summary>
/// param name="strParams">/param>
/// returns>/returns>
protected NameValueCollection ParseUrlParameters(string strParams)
{
NameValueCollection nc = new NameValueCollection();
foreach (string p in strParams.Split(''))
{
string[] ps = p.Split('=');
nc.Add(ps[0], ps[1]);
}
return nc;
}
#endregion
}
2.QQ的OAuth類
public class QQOAuth : BaseOAuth
{
public string AppId = ConfigurationManager.AppSettings["OAuth_QQ_AppId"];
public string AppKey = ConfigurationManager.AppSettings["OAuth_QQ_AppKey"];
public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_QQ_RedirectUrl"];
public const string GET_AUTH_CODE_URL = "https://graph.qq.com/oauth2.0/authorize";
public const string GET_ACCESS_TOKEN_URL = "https://graph.qq.com/oauth2.0/token";
public const string GET_OPENID_URL = "https://graph.qq.com/oauth2.0/me";
/// summary>
/// QQ登錄，跳轉(zhuǎn)到登錄頁面
/// /summary>
public override void Login()
{
//-------生成唯一隨機串防CSRF攻擊
string state = GetStateCode();
Session["QC_State"] = state; //state 放入Session
string parms = "?response_type=code"
+ "client_id=" + AppId + "redirect_uri=" + Uri.EscapeDataString(RedirectUrl) + "state=" + state;
string url = GET_AUTH_CODE_URL + parms;
Response.Redirect(url); //跳轉(zhuǎn)到登錄頁面
}
/// summary>
/// QQ回調(diào)函數(shù)
/// /summary>
/// param name="code">/param>
/// param name="state">/param>
/// returns>/returns>
public override string Callback()
{
string code = Request.QueryString["code"];
string state = Request.QueryString["state"];
//--------驗證state防止CSRF攻擊
if (state != (string)Session["QC_State"])
{
ShowError("30001");
}
string parms = "?grant_type=authorization_code"
+ "client_id=" + AppId + "redirect_uri=" + Uri.EscapeDataString(RedirectUrl)
+ "client_secret=" + AppKey + "code=" + code;
string url = GET_ACCESS_TOKEN_URL + parms;
string str = GetRequest(url);
if (str.IndexOf("callback") != -1)
{
int lpos = str.IndexOf("(");
int rpos = str.IndexOf(")");
str = str.Substring(lpos + 1, rpos - lpos - 1);
NameValueCollection msg = ParseJson(str);
if (!string.IsNullOrEmpty(msg["error"]))
{
ShowError(msg["error"], msg["error_description"]);
}
}
NameValueCollection token = ParseUrlParameters(str);
Session["QC_AccessToken"] = token["access_token"]; //access_token 放入Session
return token["access_token"];
}
/// summary>
/// 使用Access Token來獲取用戶的OpenID
/// /summary>
/// param name="accessToken">/param>
/// returns>/returns>
public string GetOpenID()
{
string parms = "?access_token=" + Session["QC_AccessToken"];
string url = GET_OPENID_URL + parms;
string str = GetRequest(url);
if (str.IndexOf("callback") != -1)
{
int lpos = str.IndexOf("(");
int rpos = str.IndexOf(")");
str = str.Substring(lpos + 1, rpos - lpos - 1);
}
NameValueCollection user = ParseJson(str);
if (!string.IsNullOrEmpty(user["error"]))
{
ShowError(user["error"], user["error_description"]);
}
Session["QC_OpenId"] = user["openid"]; //openid 放入Session
return user["openid"];
}
/// summary>
/// 顯示錯誤信息
/// /summary>
/// param name="code">錯誤編號/param>
/// param name="description">錯誤描述/param>
private void ShowError(string code, string description = null)
{
if (description == null)
{
switch (code)
{
case "20001":
description = "h2>配置文件損壞或無法讀取，請檢查web.config/h2>";
break;
case "30001":
description = "h2>The state does not match. You may be a victim of CSRF./h2>";
break;
case "50001":
description = "h2>可能是服務器無法請求https協(xié)議/h2>可能未開啟curl支持,請嘗試開啟curl支持，重啟web服務器，如果問題仍未解決，請聯(lián)系我們";
break;
default:
description = "h2>系統(tǒng)未知錯誤，請聯(lián)系我們/h2>";
break;
}
Response.Write(description);
Response.End();
}
else
{
Response.Write("h3>error:h3>" + code + "h3>msg:h3>" + description);
Response.End();
}
}
}
3.新浪微博的OAuth類
public class SinaOAuth : BaseOAuth
{
public string AppKey = ConfigurationManager.AppSettings["OAuth_Sina_AppKey"];
public string AppSecret = ConfigurationManager.AppSettings["OAuth_Sina_AppSecret"];
public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_Sina_RedirectUrl"];
public const string GET_AUTH_CODE_URL = "https://api.weibo.com/oauth2/authorize";
public const string GET_ACCESS_TOKEN_URL = "https://api.weibo.com/oauth2/access_token";
public const string GET_UID_URL = "https://api.weibo.com/2/account/get_uid.json";
/// summary>
/// 新浪微博登錄，跳轉(zhuǎn)到登錄頁面
/// /summary>
public override void Login()
{
//-------生成唯一隨機串防CSRF攻擊
string state = GetStateCode();
Session["Sina_State"] = state; //state 放入Session
string parms = "?client_id=" + AppKey + "redirect_uri=" + Uri.EscapeDataString(RedirectUrl)
+ "state=" + state;
string url = GET_AUTH_CODE_URL + parms;
Response.Redirect(url); //跳轉(zhuǎn)到登錄頁面
}
/// summary>
/// 新浪微博回調(diào)函數(shù)
/// /summary>
/// returns>/returns>
public override string Callback()
{
string code = Request.QueryString["code"];
string state = Request.QueryString["state"];
//--------驗證state防止CSRF攻擊
if (state != (string)Session["Sina_State"])
{
ShowError("The state does not match. You may be a victim of CSRF.");
}
string parms = "client_id=" + AppKey + "client_secret=" + AppSecret
+ "grant_type=authorization_codecode=" + code + "redirect_uri=" + Uri.EscapeDataString(RedirectUrl);
string str = PostRequest(GET_ACCESS_TOKEN_URL, parms);
NameValueCollection user = ParseJson(str);
Session["Sina_AccessToken"] = user["access_token"]; //access_token 放入Session
Session["Sina_UId"] = user["uid"]; //uid 放入Session
return user["access_token"];
}
/// summary>
/// 顯示錯誤信息
/// /summary>
/// param name="description">錯誤描述/param>
private void ShowError(string description = null)
{
Response.Write("h2>" + description + "/h2>");
Response.End();
}
}
4.微信的OAuth類
public class WeixinOAuth : BaseOAuth
{
public string AppId = ConfigurationManager.AppSettings["OAuth_Weixin_AppId"];
public string AppSecret = ConfigurationManager.AppSettings["OAuth_Weixin_AppSecret"];
public string RedirectUrl = ConfigurationManager.AppSettings["OAuth_Weixin_RedirectUrl"];
public const string GET_AUTH_CODE_URL = "https://open.weixin.qq.com/connect/qrconnect";
public const string GET_ACCESS_TOKEN_URL = "https://api.weixin.qq.com/sns/oauth2/access_token";
public const string GET_USERINFO_URL = "https://api.weixin.qq.com/sns/userinfo";
/// summary>
/// 微信登錄，跳轉(zhuǎn)到登錄頁面
/// /summary>
public override void Login()
{
//-------生成唯一隨機串防CSRF攻擊
string state = GetStateCode();
Session["Weixin_State"] = state; //state 放入Session
string parms = "?appid=" + AppId
+ "redirect_uri=" + Uri.EscapeDataString(RedirectUrl) + "response_type=codescope=snsapi_login"
+ "state=" + state + "#wechat_redirect";
string url = GET_AUTH_CODE_URL + parms;
Response.Redirect(url); //跳轉(zhuǎn)到登錄頁面
}
/// summary>
/// 微信回調(diào)函數(shù)
/// /summary>
/// param name="code">/param>
/// param name="state">/param>
/// returns>/returns>
public override string Callback()
{
string code = Request.QueryString["code"];
string state = Request.QueryString["state"];
//--------驗證state防止CSRF攻擊
if (state != (string)Session["Weixin_State"])
{
ShowError("30001");
}
string parms = "?appid=" + AppId + "secret=" + AppSecret
+ "code=" + code + "grant_type=authorization_code";
string url = GET_ACCESS_TOKEN_URL + parms;
string str = GetRequest(url);
NameValueCollection msg = ParseJson(str);
if (!string.IsNullOrEmpty(msg["errcode"]))
{
ShowError(msg["errcode"], msg["errmsg"]);
}
Session["Weixin_AccessToken"] = msg["access_token"]; //access_token 放入Session
Session["Weixin_OpenId"] = msg["openid"]; //access_token 放入Session
return msg["access_token"];
}
/// summary>
/// 顯示錯誤信息
/// /summary>
/// param name="code">錯誤編號/param>
/// param name="description">錯誤描述/param>
private void ShowError(string code, string description = null)
{
if (description == null)
{
switch (code)
{
case "20001":
description = "h2>配置文件損壞或無法讀取，請檢查web.config/h2>";
break;
case "30001":
description = "h2>The state does not match. You may be a victim of CSRF./h2>";
break;
case "50001":
description = "h2>接口未授權(quán)/h2>";
break;
default:
description = "h2>系統(tǒng)未知錯誤，請聯(lián)系我們/h2>";
break;
}
Response.Write(description);
Response.End();
}
else
{
Response.Write("h3>error:h3>" + code + "h3>msg:h3>" + description);
Response.End();
}
}
}
5.web.config配置信息
appSettings>
!--QQ登錄相關配置-->
add key="OAuth_QQ_AppId" value="123456789" />
add key="OAuth_QQ_AppKey" value="25f9e794323b453885f5181f1b624d0b" />
add key="OAuth_QQ_RedirectUrl" value="http://www.domain.com/oauth20/qqcallback.aspx" />
!--新浪微博登錄相關配置-->
add key="OAuth_Sina_AppKey" value="123456789" />
add key="OAuth_Sina_AppSecret" value="25f9e794323b453885f5181f1b624d0b" />
add key="OAuth_Sina_RedirectUrl" value="http://www.domain.com/oauth20/sinacallback.aspx" />
!--微信登錄相關配置-->
add key="OAuth_Weixin_AppId" value="wx123456789123" />
add key="OAuth_Weixin_AppSecret" value="25f9e794323b453885f5181f1b624d0b" />
add key="OAuth_Weixin_RedirectUrl" value="http://www.domain.com/oauth20/weixincallback.aspx" />
/appSettings>
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