转移.net core 3.1，为.NET 5做准备

OpenAuth.Mvc/Controllers/RedirectsController.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace OpenAuth.Mvc.Controllers
+{
+    public class RedirectsController : Controller
+    {
+        /// <summary>
+        /// oauth认证跳转页面
+        /// </summary>
+        /// <returns></returns>
+        [Authorize]
+        public ActionResult IdentityAuth()
+        {
+            if (User.Identity.IsAuthenticated)
+                return Redirect("/Home/Index");
+            return View();
+        }
+    }
+}