.NET Core2.0+MVC 用session，cookie实现的sso单点登录

博主刚接触.NET Core2.0，想做一个单点登录的demo，所以参考了一些资料，这里给上链接：

1.http://www.cnblogs.com/baibaomen/p/sso-sequence-chart.html

2.https://www.cnblogs.com/ywlaker/p/6113927.html

于是开始项目：

首先，既然是单点登录，就得建立多个站点，实现多个系统一次登录/注销。

直接看解决方案

sso_server用于统一登录

这边思路不再多说，上面的两篇帖子说的比较清楚。

既然使用session，那么，就得在startup中添加：

当然，所有用到session的项目，都需要这么添加一下（个人觉得有点麻烦，有更好的方法，也请告知，感谢）

然后是system1,system2的代码（这里两个系统没有差别）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace SSO_Server.Controllers
{
    public class LoginController : Controller
    {
        public IActionResult Index(string returnUrl)
        {
            //浏览器带过来的cookie，token值
            string browsertoken = HttpContext.Request.Cookies["token"];
            //不存在，则判断未登录
            if (string.IsNullOrEmpty(browsertoken) || string.IsNullOrEmpty(HttpContext.Session.GetString(browsertoken)))
            {
                ViewData["Message"] = "请登录";
            }
            else
            {
                string url = HttpContext.Session.GetString(browsertoken) + ",";
                //将请求的url注册
                HttpContext.Session.SetString(browsertoken, url + returnUrl);
                //存在token，判断已登录，返回用户信息
                return Redirect(returnUrl + "?token=" + browsertoken + "&uid=" + "1234");
                //return Content(returnUrl + "?token=" + browsertoken + "&uid=" + "1234");
            }
            return View();
        }

        public IActionResult SignIn(string returnUrl)
        {
            //保存用户信息
            HttpContext.Session.SetString("uid","1234");
            //生成token
            string token = Guid.NewGuid().ToString();
            //将请求的url注册
            HttpContext.Session.SetString(token, returnUrl);
            //写入浏览器token
            HttpContext.Response.Cookies.Append("token",token);
            if (string.IsNullOrWhiteSpace(returnUrl))
            {
                returnUrl = "http://sysone.yourdomain.cn";
            }
            //返回token和用户信息到请求地址
            return Redirect(returnUrl+"?token="+ token+"&uid="+"1234");
        }

        public IActionResult sessiontoken()
        {
            string browsertoken = HttpContext.Request.Cookies["token"];
            string s= HttpContext.Session.GetString(browsertoken);
            return Content(s);
        }

        public IActionResult SignOut(string returnUrl)
        {
            string cont = string.Empty;
            string nexturl = string.Empty;
            string browsertoken = HttpContext.Request.Cookies["token"];
            if (!string.IsNullOrEmpty(HttpContext.Session.GetString(browsertoken)))
            {
                string urlstr = HttpContext.Session.GetString(browsertoken);
                //string urlstr = "http://sysone.yourdomain.cn,http://systwo.yourdomain.cn";
                string[] ulslist = urlstr.Split(',');
                List<string> arrstr = ulslist.Distinct().ToList();
                if (arrstr.Count() > 0 && !string.IsNullOrEmpty(arrstr[0]))
                {
                    nexturl = arrstr[0] + "/Home/SignOut";
                    cont = string.Join(",", arrstr);
                }
            }
            HttpContext.Response.Cookies.Delete("token");
            HttpContext.Session.Clear();
            //return Content(nexturl + "?returnUrl=" + returnUrl + "&cont=" + cont);
            if (!string.IsNullOrEmpty(nexturl))
                return Redirect(nexturl + "?returnUrl=" + returnUrl + "&cont=" + cont);
            else
                return Redirect(returnUrl);
        }
    }
}

然后是视图

@{
    ViewData["Title"] = "Home Page";
}
@ViewData["Message"]
@if (!ViewData["Message"].ToString().Equals("请登录"))
{
<a href="http://sso.yourdomain.cn/Login/SignOut?returnUrl=http://sysone.yourdomain.cn">注销</a>
}
else
{
    <a class="btn btn-default" href="http://sso.yourdomain.cn/login?returnUrl=http://sysone.yourdomain.cn">登录</a>
}

然后是sso认证中心代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace SSO_Server.Controllers
{
    public class LoginController : Controller
    {
        public IActionResult Index(string returnUrl)
        {
            //浏览器带过来的cookie，token值
            string browsertoken = HttpContext.Request.Cookies["token"];
            //不存在，则判断未登录
            if (string.IsNullOrEmpty(browsertoken) || string.IsNullOrEmpty(HttpContext.Session.GetString(browsertoken)))
            {
                ViewData["Message"] = "请登录";
            }
            else
            {
                string url = HttpContext.Session.GetString(browsertoken) + ",";
                //将请求的url注册
                HttpContext.Session.SetString(browsertoken, url + returnUrl);
                //存在token，判断已登录，返回用户信息
                return Redirect(returnUrl + "?token=" + browsertoken + "&uid=" + "1234");
                //return Content(returnUrl + "?token=" + browsertoken + "&uid=" + "1234");
            }
            return View();
        }

        public IActionResult SignIn(string returnUrl)
        {
            //保存用户信息
            HttpContext.Session.SetString("uid","1234");
            //生成token
            string token = Guid.NewGuid().ToString();
            //将请求的url注册
            HttpContext.Session.SetString(token, returnUrl);
            //写入浏览器token
            HttpContext.Response.Cookies.Append("token",token);
            if (string.IsNullOrWhiteSpace(returnUrl))
            {
                returnUrl = "http://sysone.yourdomain.cn";
            }
            //返回token和用户信息到请求地址
            return Redirect(returnUrl+"?token="+ token+"&uid="+"1234");
        }

        public IActionResult sessiontoken()
        {
            string browsertoken = HttpContext.Request.Cookies["token"];
            string s= HttpContext.Session.GetString(browsertoken);
            return Content(s);
        }

        public IActionResult SignOut(string returnUrl)
        {
            string cont = string.Empty;
            string nexturl = string.Empty;
            string browsertoken = HttpContext.Request.Cookies["token"];
            if (!string.IsNullOrEmpty(HttpContext.Session.GetString(browsertoken)))
            {
                string urlstr = HttpContext.Session.GetString(browsertoken);
                //string urlstr = "http://sysone.yourdomain.cn,http://systwo.yourdomain.cn";
                string[] ulslist = urlstr.Split(',');
                List<string> arrstr = ulslist.Distinct().ToList();
                if (arrstr.Count() > 0 && !string.IsNullOrEmpty(arrstr[0]))
                {
                    nexturl = arrstr[0] + "/Home/SignOut";
                    cont = string.Join(",", arrstr);
                }
            }
            HttpContext.Response.Cookies.Delete("token");
            HttpContext.Session.Clear();
            //return Content(nexturl + "?returnUrl=" + returnUrl + "&cont=" + cont);
            if (!string.IsNullOrEmpty(nexturl))
                return Redirect(nexturl + "?returnUrl=" + returnUrl + "&cont=" + cont);
            else
                return Redirect(returnUrl);
        }
    }
}

sso，登录页视图index

@{
    ViewData["Title"] = "登录";
}
@ViewData["Message"]
@if (!ViewData["Message"].ToString().Equals("请登录"))
{
    <a href="@Url.Action("SignOut")">注销</a>
}
else
{
    <a class="btn btn-default" href="@Url.Action("SignIn","Login",new { returnUrl=Context.Request.Query["returnUrl"]})">登录</a>
}
@ViewData["Message1"]

这里贴上资源链接

https://download.csdn.net/download/qq_28248571/10342173

这里只是初步demo，请不要钻牛角尖，欢迎讨论，感谢你的阅读