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新浪微博开放平台OAuth授权简单示例[C#]

编辑:dnawo 日期:2011-03-17

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Default.aspx：
复制内容到剪贴板程序代码 程序代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:Button ID="btnRequestToken" runat="server" onclick="btnRequestToken_Click"
            Text="OAuth测试" />
    
    </div>
    </form>
</body>
</html>

Default.aspx.cs：
复制内容到剪贴板程序代码 程序代码
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;

public partial class _Default : System.Web.UI.Page
{
    private const string REQUEST_TOKEN = "http://api.t.sina.com.cn/oauth/request_token";
    private const string AUTHORIZE = "http://api.t.sina.com.cn/oauth/authorize";
    private const string ACCESS_TOKEN = "http://api.t.sina.com.cn/oauth/access_token";
    private string oauth_consumer_key = "2098100000";
    private string oauth_consumer_secret = "bc4ffde96c65371390fde0000000000";

    public string oauth_token
    {
        get { return Session["oauth_token"] + ""; }
        set { Session["oauth_token"] = value; }
    }

    public string oauth_token_secret
    {
        get { return Session["oauth_token_secret"] + ""; }
        set { Session["oauth_token_secret"] = value; }
    }

    /// <summary>
    /// 开始
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnRequestToken_Click(object sender, EventArgs e)
    {
        if (Request_Token())//第一步：获取未授权的Request_Token
            Authorize();//第二步：获取用户授权的Request_Token
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["oauth_token"] != null && Request.QueryString["oauth_verifier"] != null)
        {
            if (Access_Token())//第三步：获取Access_Token
            {
                Response.Write("oauth_token=" + oauth_token + "<br/>");
                Response.Write("oauth_token_secret=" + oauth_token_secret + "<br/>");
            }
        }
    }



    /// <summary>
    /// 第一步：获取未授权的Request_Token
    /// </summary>
    /// <returns></returns>
    protected bool Request_Token()
    {
        SortedList<string, string> parameters = new SortedList<string, string>();
        parameters.Add("oauth_consumer_key", oauth_consumer_key);
        parameters.Add("oauth_signature_method", "HMAC-SHA1");
        parameters.Add("oauth_timestamp", GenerateTimeStamp());
        parameters.Add("oauth_nonce", GenerateNonce());
        parameters.Add("oauth_version", "1.0");
        parameters.Add("oauth_signature", HMACSHA1(oauth_consumer_secret, "", ListToSignatureBaseString("GET", REQUEST_TOKEN, parameters)));

        //oauth_token=d21ec5d68d12d19367cf2be1a22b5ee3&oauth_token_secret=f879974707aeac8629c4cd93cd821c29
        string result = HttpGet(REQUEST_TOKEN, ListToQueryString(parameters));
        if (result.IndexOf("&oauth_token_secret=") != -1)
        {
            Dictionary<string, string> parameters2 = UrlParse(result);
            oauth_token = parameters2["oauth_token"];
            oauth_token_secret = parameters2["oauth_token_secret"];
            return true;
        }
        else
        {
            return false;
        }
    }

    /// <summary>
    /// 第二步：获取用户授权的Request_Token
    /// </summary>
    protected void Authorize()
    {
        SortedList<string, string> parameters = new SortedList<string, string>();
        parameters.Add("oauth_token", oauth_token);
        parameters.Add("oauth_callback", "http://127.0.0.1/sina");

        //url?oauth_token=d21ec5d68d12d19367cf2be1a22b5ee3&oauth_verifier=815310
        Response.Redirect(AUTHORIZE + "?" + ListToQueryString(parameters));
    }

    /// <summary>
    /// 第三步：获取Access_Token
    /// </summary>
    protected bool Access_Token()
    {
        SortedList<string, string> parameters = new SortedList<string, string>();
        parameters.Add("oauth_consumer_key", oauth_consumer_key);
        parameters.Add("oauth_token", Request.QueryString["oauth_token"]);
        parameters.Add("oauth_signature_method", "HMAC-SHA1");
        parameters.Add("oauth_timestamp", GenerateTimeStamp());
        parameters.Add("oauth_nonce", GenerateNonce());
        parameters.Add("oauth_version", "1.0");
        parameters.Add("oauth_verifier", Request.QueryString["oauth_verifier"]);
        parameters.Add("oauth_signature", HMACSHA1(oauth_consumer_secret, oauth_token_secret, ListToSignatureBaseString("POST", ACCESS_TOKEN, parameters)));

        //oauth_token=57a8c34e597352e0e41cd6d59eddd8c0&oauth_token_secret=8aeee485bd7aac111dc4d90778b94954&user_id=1893854887
        string result = HttpPost(ACCESS_TOKEN, ListToQueryString(parameters));
        if (result.IndexOf("&oauth_token_secret=") != -1)
        {
            Dictionary<string, string> parameters2 = UrlParse(result);
            oauth_token = parameters2["oauth_token"];
            oauth_token_secret = parameters2["oauth_token_secret"];
            return true;
        }
        else
        {
            return false;
        }
    }

    #region 公共函数...

    public string UrlEncode(string value)
    {
        StringBuilder result = new StringBuilder();
        string unreservedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
        foreach (char symbol in value)
        {
            if (unreservedChars.IndexOf(symbol) != -1)
            {
                result.Append(symbol);
            }
            else
            {
                result.Append('%' + String.Format("{0:X2}", (int)symbol));
            }
        }
        return result.ToString();
    }

    public string ListToSignatureBaseString(string httpMethod, string base_uri, SortedList<string, string> parameters)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append(UrlEncode(httpMethod) + "&");
        sb.Append(UrlEncode(base_uri) + "&");
        foreach (KeyValuePair<string, string> item in parameters)
        {
            sb.Append(UrlEncode(item.Key) + "%3D" + UrlEncode(item.Value) + "%26");
        }
        int len = sb.ToString().Length;
        return sb.ToString().Substring(0, len - 3);
    }

    public string ListToQueryString(SortedList<string, string> parameters)
    {
        StringBuilder sb = new StringBuilder();
        foreach (KeyValuePair<string, string> item in parameters)
        {
            sb.Append('&' + UrlEncode(item.Key) + "=" + UrlEncode(item.Value));
        }
        return sb.ToString().Substring(1);
    }

    public string HMACSHA1(string consumer_secret, string oauth_token_secret, string signaturebasestring)
    {
        HMACSHA1 hmacsha1 = new HMACSHA1();
        hmacsha1.Key = Encoding.ASCII.GetBytes(consumer_secret + "&" + oauth_token_secret);
        byte[] dataBuffer = System.Text.Encoding.ASCII.GetBytes(signaturebasestring);
        byte[] hashBytes = hmacsha1.ComputeHash(dataBuffer);
        string signature = Convert.ToBase64String(hashBytes);
        return signature;
    }

    public string GenerateTimeStamp()
    {
        return (DateTime.Now.Ticks - DateTime.Parse("1970-01-01 00:00:00").Ticks) / 10000000 + "";
    }

    public string GenerateNonce()
    {
        return DateTime.Now.Ticks.ToString();
    }

    public Dictionary<string, string> UrlParse(string query)
    {
        Dictionary<string, string> result = new Dictionary<string, string>();
        string[] parameters = query.Split('&');
        for (int i = 0; i < parameters.Length; i++)
        {
            result.Add(parameters[i].Split('=')[0], parameters[i].Split('=')[1]);
        }
        return result;
    }

    public string HttpPost(string action, string parmString)
    {
        try
        {
            Encoding encoding = Encoding.GetEncoding("utf-8");
            Uri uri = new Uri(action);
            byte[] paramBytes = encoding.GetBytes(parmString);
            WebRequest webRequest = WebRequest.Create(uri);
            webRequest.ContentType = "application/x-www-form-urlencoded";
            webRequest.Method = "POST";
            using (Stream stream = webRequest.GetRequestStream())
            {
                stream.Write(paramBytes, 0, paramBytes.Length);
            }
            WebResponse webResponse = webRequest.GetResponse();
            using (StreamReader reader = new StreamReader(webResponse.GetResponseStream(), encoding))
            {
                return reader.ReadToEnd();
            }
        }
        catch (Exception ex)
        {
            return ex.Message;
        }
    }

    public string HttpGet(string action, string parmString)
    {
        try
        {
            Encoding encoding = Encoding.GetEncoding("utf-8");
            Uri uri = new Uri(string.Format("{0}?{1}", action, parmString));
            WebRequest webRequest = WebRequest.Create(uri);
            webRequest.ContentType = "application/x-www-form-urlencoded";
            webRequest.Method = "GET";
            WebResponse webResponse = webRequest.GetResponse();
            using (StreamReader reader = new StreamReader(webResponse.GetResponseStream(), encoding))
            {
                return reader.ReadToEnd();
            }
        }
        catch (Exception ex)
        {
            return ex.Message;
        }
    }
    #endregion

}


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