ASPNET实现QQ微信新浪微博OAuth20授权登录.docx
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ASPNET实现QQ微信新浪微博OAuth20授权登录
不管是腾讯还是新浪,查看他们的API,PHP都是有完整的接口,但对C#支持似乎都不是那么完善,都没有,腾讯是完全没有,新浪是提供第三方的,而且后期还不一定升级,NND,用第三方的动辄就一个类库,各种配置还必须按照他们约定的写,烦而且乱,索性自己写,后期的扩展也容易,看过接口后,开始以为很难,参考了几个源码之后发现也不是那么难,无非是GET或POST请求他们的接口获取返回值之类的,话不多说,这里只提供几个代码共参考,抛砖引玉了。
我这个写法的特点是,用到了Session,使用对象实例化之后调用Login()跳转到登录页面,在回调页面调用Callback()执行之后,可以从Session也可以写独立的函数(如:
GetOpenID())中获取access_token或用户的唯一标识,以方便做下一步的操作。
所谓绑定就是把用户的唯一标识取出,插入数据库,和帐号绑定起来。
1.首先是所有OAuth类的基类,放一些需要公用的方法
publicabstractclassBaseOAuth
{
publicHttpRequestRequest=HttpContext.Current.Request;
publicHttpResponseResponse=HttpContext.Current.Response;
publicHttpSessionStateSession=HttpContext.Current.Session;
publicabstractvoidLogin();
publicabstractstringCallback();
#region内部使用函数
///<summary>
///生成唯一随机串防CSRF攻击
///</summary>
///<returns></returns>
protectedstringGetStateCode()
{
Randomrand=newRandom();
stringdata=DateTime.Now.ToString("yyyyMMddHHmmssffff")+rand.Next(1,0xf423f).ToString();
MD5CryptoServiceProvidermd5=newMD5CryptoServiceProvider();
byte[]md5byte=md5.ComputeHash(UTF8Encoding.Default.GetBytes(data));
returnBitConverter.ToString(md5byte).Replace("-","");
}
///<summary>
///GET请求
///</summary>
///<paramname="url"></param>
///<returns></returns>
protectedstringGetRequest(stringurl)
{
HttpWebRequesthttpWebRequest=System.Net.WebRequest.Create(url)asHttpWebRequest;
httpWebRequest.Method="GET";
httpWebRequest.ServicePoint.Expect100Continue=false;
StreamReaderresponseReader=null;
stringresponseData;
try
{
responseReader=newStreamReader(httpWebRequest.GetResponse().GetResponseStream());
responseData=responseReader.ReadToEnd();
}
finally
{
httpWebRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
}
returnresponseData;
}
///<summary>
///POST请求
///</summary>
///<paramname="url"></param>
///<paramname="postData"></param>
///<returns></returns>
protectedstringPostRequest(stringurl,stringpostData)
{
HttpWebRequesthttpWebRequest=System.Net.WebRequest.Create(url)asHttpWebRequest;
httpWebRequest.Method="POST";
httpWebRequest.ServicePoint.Expect100Continue=false;
httpWebRequest.ContentType="application/x-www-form-urlencoded";
//写入POST参数
StreamWriterrequestWriter=newStreamWriter(httpWebRequest.GetRequestStream());
try
{
requestWriter.Write(postData);
}
finally
{
requestWriter.Close();
}
//读取请求后的结果
StreamReaderresponseReader=null;
stringresponseData;
try
{
responseReader=newStreamReader(httpWebRequest.GetResponse().GetResponseStream());
responseData=responseReader.ReadToEnd();
}
finally
{
httpWebRequest.GetResponse().GetResponseStream().Close();
responseReader.Close();
}
returnresponseData;
}
///<summary>
///解析JSON
///</summary>
///<paramname="strJson"></param>
///<returns></returns>
protectedNameValueCollectionParseJson(stringstrJson)
{
NameValueCollectionmc=newNameValueCollection();
Regexregex=newRegex(@"(\s*\bsp;}
foreach(Matchminregex.Matches(strJson))
{
mc.Add(m.Groups[2].Value,m.Groups[3].Value);
}
returnmc;
}
///<summary>
///解析URL
///</summary>
///<paramname="strParams"></param>
///<returns></returns>
protectedNameValueCollectionParseUrlParameters(stringstrParams)
{
NameValueCollectionnc=newNameValueCollection();
foreach(stringpinstrParams.Split('&'))
{
string[]ps=p.Split('=');
nc.Add(ps[0],ps[1]);
}
returnnc;
}
#endregion
}
2.QQ的OAuth类
publicclassQQOAuth:
BaseOAuth
{
publicstringAppId=ConfigurationManager.AppSettings["OAuth_QQ_AppId"];
publicstringAppKey=ConfigurationManager.AppSettings["OAuth_QQ_AppKey"];
publicstringRedirectUrl=ConfigurationManager.AppSettings["OAuth_QQ_RedirectUrl"];
publicconststringGET_AUTH_CODE_URL="
publicconststringGET_ACCESS_TOKEN_URL="
publicconststringGET_OPENID_URL="
///<summary>
///QQ登录,跳转到登录页面
///</summary>
publicoverridevoidLogin()
{
//-------生成唯一随机串防CSRF攻击
stringstate=GetStateCode();
Session["QC_State"]=state;//state放入Session
stringparms="?
response_type=code&"
+"client_id="+AppId+"&redirect_uri="+Uri.EscapeDataString(RedirectUrl)+"&state="+state;
stringurl=GET_AUTH_CODE_URL+parms;
Response.Redirect(url);//跳转到登录页面
}
///<summary>
///QQ回调函数
///</summary>
///<paramname="code"></param>
///<paramname="state"></param>
///<returns></returns>
publicoverridestringCallback()
{
stringcode=Request.QueryString["code"];
stringstate=Request.QueryString["state"];
//--------验证state防止CSRF攻击
if(state!
=(string)Session["QC_State"])
{
ShowError("30001");
}
stringparms="?
grant_type=authorization_code&"
+"client_id="+AppId+"&redirect_uri="+Uri.EscapeDataString(RedirectUrl)
+"&client_secret="+AppKey+"&code="+code;
stringurl=GET_ACCESS_TOKEN_URL+parms;
stringstr=GetRequest(url);
if(str.IndexOf("callback")!
=-1)
{
intlpos=str.IndexOf("(");
intrpos=str.IndexOf(")");
str=str.Substring(lpos+1,rpos-lpos-1);
NameValueCollectionmsg=ParseJson(str);
if(!
string.IsNullOrEmpty(msg["error"]))
{
ShowError(msg["error"],msg["error_description"]);
}
}
NameValueCollectiontoken=ParseUrlParameters(str);
Session["QC_AccessToken"]=token["access_token"];//access_token放入Session
returntoken["access_token"];
}
///<summary>
///使用AccessToken来获取用户的OpenID
///</summary>
///<paramname="accessToken"></param>
///<returns></returns>
publicstringGetOpenID()
{
stringparms="?
access_token="+Session["QC_AccessToken"];
stringurl=GET_OPENID_URL+parms;
stringstr=GetRequest(url);
if(str.IndexOf("callback")!
=-1)
{
intlpos=str.IndexOf("(");
intrpos=str.IndexOf(")");
str=str.Substring(lpos+1,rpos-lpos-1);
}
NameValueCollectionuser=ParseJson(str);
if(!
string.IsNullOrEmpty(user["error"]))
{
ShowError(user["error"],user["error_description"]);
}
Session["QC_OpenId"]=user["openid"];//openid放入Session
returnuser["openid"];
}
///<summary>
///显示错误信息
///</summary>
///<paramname="code">错误编号</param>
///<paramname="description">错误描述</param>
privatevoidShowError(stringcode,stringdescription=null)
{
if(description==null)
{
switch(code)
{
case"20001":
description="<h2>配置文件损坏或无法读取,请检查web.config</h2>";
break;
case"30001":
description="<h2>Thestatedoesnotmatch.YoumaybeavictimofCSRF.</h2>";