QQ微博登陆封装

最近想搞写一个基于QQ微博的桌面应用，按照官方的介绍，我使用C#的SDK进行开发，但是发现这个SDK关于登陆的地方很粗糙，另外发现通过OAuth的方式登陆的话，需要用户去填写获取到的verifer字符串。 研究了一下，发现C#里面可以通过一个Webbrowser来解决这个问题。基于这个机制，我写了一个登陆的辅助类。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace QQWeiboApi
{
    public partial class FrmTencentAuth : Form
    {
        private volatile bool is_run;
        public FrmTencentAuth()
        {
            InitializeComponent();
        }

        public string GetOauthVerifier(IWin32Window win, string tokenKey, string callbackurl)
        {
            string url = "http://open.t.qq.com/cgi-bin/authorize?oauth_token=" + tokenKey;
            is_run = true;
            webBrowser1.Navigate(url);
            this.Show(win);
            while (is_run == true && (webBrowser1.Url == null || ! webBrowser1.Url.ToString().StartsWith(callbackurl)))
            {
                Application.DoEvents();
            }
            if (is_run == false)
            {
                return null;
            }
            url = webBrowser1.Url.ToString();
            this.Close();
            string sl = "oauth_verifier=";
            return url.Substring(url.IndexOf(sl) + sl.Length);
        }

        private void FrmTencentAuth_FormClosing(object sender, FormClosingEventArgs e)
        {
            is_run = false;
        }
    }
}

  上面是验证form的一部分，下面的是处理登陆的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using QWeiboSDK;
using System.Collections.Specialized;
using System.Reflection;

namespace QQWeiboApi
{
    public class QWeiboLoginHelper
    {
        private string appKey = null;
        private string appSecret = null;
        private string accessKey = null;
        private string accessSecret = null;
        private string requestKey = null;
        private string requestSecret = null;
        private string verifier = null;
        private string callbackurl = "http://www.smallbridge.co.cc";

        public QWeiboLoginHelper(string appKey, string appSecret)
        {
            this.appKey = appKey;
            this.appSecret = appSecret;
        }

        /// <summary>
        /// 登陆
        /// </summary>
        /// <param name="appKey">应用的key</param>
        /// <param name="appSecret">应用secret</param>
        public void Login()
        {
            GetRequestToken(appKey, appSecret);
            GetUserAuth();
            GetAccessToken();
        }

        public OauthKey AuthKey
        {
            get
            {
                if (appKey == null || appSecret == null || accessKey == null || accessSecret == null)
                {
                    return null;
                }
                return new OauthKey() { customKey = appKey, customSecret = appSecret, tokenKey = accessKey, tokenSecret = accessKey };
            }

        }

        private void GetAccessToken()
        {
            string url = "https://open.t.qq.com/cgi-bin/access_token";
            List<Parameter> parameters = new List<Parameter>();
            OauthKey oauthKey = new OauthKey();
            oauthKey.customKey = appKey;
            oauthKey.customSecret = appSecret;
            oauthKey.tokenKey = requestKey;
            oauthKey.tokenSecret = requestSecret;
            oauthKey.verify = verifier;
            try
            {
                QWeiboRequest request = new QWeiboRequest();
                string result = request.SyncRequest(url, "GET", oauthKey, parameters, null);
                NameValueCollection nvs = ParseKVPairs(result);
                accessKey = nvs["oauth_token"];
                accessSecret = nvs["oauth_token_secret"];
                if (accessKey == null || accessSecret == null)
                {
                    throw new Exception("get null accessKey or accessSecret");
                }
            }
            catch (Exception ex)
            {
                throw new Exception("get accessKey and accessSecret error", ex);
            }
        }

        private void GetUserAuth()
        {
            FrmTencentAuth frmau = new FrmTencentAuth();
            try
            {
                verifier = frmau.GetOauthVerifier(null, requestKey, callbackurl);
                if (verifier == null)
                {
                    throw new Exception("get null user oauth verifier");
                }
            }
            catch (Exception ex)
            {
                throw new Exception("get user oauth verifier error", ex);
            }
        }

        private void GetRequestToken(string appKey, string appSecret)
        {
            string url = "https://open.t.qq.com/cgi-bin/request_token";
            List<Parameter> parameters = new List<Parameter>();
            OauthKey oauthKey = new OauthKey();
            oauthKey.customKey = appKey;
            oauthKey.customSecret = appSecret;
            oauthKey.callbackUrl = callbackurl;

            try
            {
                QWeiboRequest request = new QWeiboRequest();
                string result = request.SyncRequest(url, "GET", oauthKey, parameters, null);
                NameValueCollection nvs = ParseKVPairs(result);
                requestKey = nvs["oauth_token"];
                requestSecret = nvs["oauth_token_secret"];
                if (requestKey == null || requestSecret == null)
                {
                    throw new Exception("get null request key or secret");
                }
            }
            catch (Exception ex)
            {
                throw new Exception("get request key and secret error", ex);
            }
        }

        private NameValueCollection ParseKVPairs(string str)
        {
            NameValueCollection nvs = new NameValueCollection();
            foreach (string kv in str.Split('&'))
            {
                string[] kvs = kv.Split('=');
                if (kvs.Length == 2)
                {
                    nvs.Add(kvs[0], kvs[1]);
                }
            }
            return nvs;
        }
    }
}

  代码下载，请点QQWeiboApi。