[ASP.NET] 使用 OAuth 2.0 整合 Google、Facebok、WindowsLive(MSN)登陆实例 API SDK，附完整源码

【实例简介】
【实例截图】

实例效果图：

【核心代码】

登陆代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.IO;
using MultiOAuth.Core;
using MultiOAuth.Core.Service;
using MultiOAuth.Core.Client;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        var context = MultiOAuthContext.Create(MultiOAuthFactroy.CreateClient<GoogleClinet>("Google"));
        try
        {
            context.BeginAuth();
        }
        catch (Exception)
        {
            
            throw;
        }
    }

    protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
    {
        var context = MultiOAuthContext.Create(MultiOAuthFactroy.CreateClient<FacebookClient>("Facebook"));
        try
        {
            context.BeginAuth();
        }
        catch (Exception)
        {
            
            throw;
        }
    }

    protected void ImageButton3_Click(object sender, ImageClickEventArgs e)
    {
        var context = MultiOAuthContext.Create(MultiOAuthFactroy.CreateClient<WindowsLiveClient>(
                "",
                "",
                "",
                "wl.basic,wl.emails",
                "~/Accepted.aspx",
                "~/Default.aspx"
            ));
        try
        {
            context.BeginAuth();
        }
        catch (Exception)
        {
            
            throw;
        }
    }

    protected void btnLogin_Click(object sender, EventArgs e)
    {
        string loginId = txtLoginID.Text.Trim();
        string passowrd = txtPassword.Text.Trim();

        SecurityDao dao = new SecurityDao();
        string uid = dao.QueryAccountUID(loginId, passowrd);
        if (uid != "")
        {
            Response.Redirect(string.Format("Success.aspx?UID={0}", uid));
        }
        else {
            Response.Write("查無該帳號。");
        }
        
    }
}

返回代码：

    protected void Page_Load(object sender, EventArgs e)
    {

        string token = MultiOAuthContext.Current.Token;
        if (token != "")
        {
            var profile = MultiOAuthContext.Current.Profile;
            string id = profile["id"].ToString();
            string source = profile["source"].ToString();
            string name = profile["name"].ToString();
            SecurityDao dao = new SecurityDao();
            switch (source) {
                case "Google":
                    id = "gl_"   id;
                    break;
                case "Facebook":
                    id = "fb_"   id;
                    break;
                case "WindowsLive":
                    id = "wl"   id;
                    break;
            }
            if (dao.QueryAccountIsExist(id))
            {
                Response.Redirect(string.Format("Success.aspx?UID={0}", id));
            }
            else
            {
                dao.InsertAccount(id, name, source);
                Response.Redirect(string.Format("Success.aspx?UID={0}", id));
            }
        }
        else
        {
            Response.Redirect("failed.aspx");
        }
    }