mvc core2.1 Identity.EntityFramework Core 登录 (三）

Controllers->AccountController.cs 新建

 [HttpGet]
         [AllowAnonymous]
         public async Task<IActionResult> Login(string returnUrl = null)
         {
             // Clear the existing external cookie to ensure a clean login process
             await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
             ViewData["ReturnUrl"] = returnUrl;
             return View();
         }

         [HttpPost]
         [AllowAnonymous]
         [ValidateAntiForgeryToken]
         public async Task<IActionResult> Login(LoginViewModel model, string returnUrl = null)
         {
             ViewData["ReturnUrl"] = returnUrl;
             if (ModelState.IsValid)
             {
                 // This doesn't count login failures towards account lockout
                 // To enable password failures to trigger account lockout, set lockoutOnFailure: true
                 var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
                 if (result.Succeeded)
                 {
                     return RedirectToLocal(returnUrl);
                 }
                 else
                 {
                     ModelState.AddModelError(string.Empty, "Invalid login attempt.");
                     return View(model);
                 }
             }
             // If we got this far, something failed, redisplay form
             return View(model);
         }

         [HttpPost]
         [ValidateAntiForgeryToken]
         public async Task<IActionResult> Logout()
         {
             await _signInManager.SignOutAsync();
             return RedirectToAction(nameof(HomeController.Index), "Home");
         }

Models->AccountViewModels->LoginViewModel.cs 新建

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading.Tasks;

namespace IdentityMvc.Models.AccountViewModels
{
    public class LoginViewModel
    {
        [Required]
        [EmailAddress]
        public string Email { get; set; }

        [Required]
        [DataType(DataType.Password)]
        public string Password { get; set; }

        [Display(Name = "Remember me?")]
        public bool RememberMe { get; set; }
    }
}

Views->Account->Login.cshtml 新建

 @using System.Collections.Generic
 @using System.Linq
 @using Microsoft.AspNetCore.Http
 @using Microsoft.AspNetCore.Http.Authentication
 @model LoginViewModel
 @inject SignInManager<ApplicationUser> SignInManager

 @{
     ViewData["Title"] = "Log in";
 }

 <h2>@ViewData["Title"]</h2>
 <div class="row">
     <div class="col-md-4">
         <section>
             <form asp-route-returnurl="@ViewData["ReturnUrl"]" method="post">
                 <h4>Use a local account to log in.</h4>
                 <hr />
                 <div asp-validation-summary="All" class="text-danger"></div>
                 <div class="form-group">
                     <label asp-for="Email"></label>
                     <input asp-for="Email" class="form-control" />
                     <span asp-validation-for="Email" class="text-danger"></span>
                 </div>
                 <div class="form-group">
                     <label asp-for="Password"></label>
                     <input asp-for="Password" class="form-control" />
                     <span asp-validation-for="Password" class="text-danger"></span>
                 </div>
                 <div class="form-group">
                     <div class="checkbox">
                         <label asp-for="RememberMe">
                             <input asp-for="RememberMe" />
                             @Html.DisplayNameFor(m => m.RememberMe)
                         </label>
                     </div>
                 </div>
                 <div class="form-group">
                     <button type="submit" class="btn btn-default">Log in</button>
                 </div>
                 <div class="form-group">
                     <p>
                         <a asp-action="ForgotPassword">Forgot your password?</a>
                     </p>
                     <p>
                         <a asp-action="Register" asp-route-returnurl="@ViewData["ReturnUrl"]">Register as a new user?</a>
                     </p>
                 </div>
             </form>
         </section>
     </div>
     <div class="col-md-6 col-md-offset-2">
         <section>
             <h4>Use another service to log in.</h4>
             <hr />
             @{
                 var loginProviders = (await SignInManager.GetExternalAuthenticationSchemesAsync()).ToList();
                 if (loginProviders.Count == )
                 {
                     <div>
                         <p>
                             There are no external authentication services configured. See <a href="https://go.microsoft.com/fwlink/?LinkID=532715">this article</a>
                             for details on setting up this ASP.NET application to support logging in via external services.
                         </p>
                     </div>
                 }
                 else
                 {
                     <form asp-action="ExternalLogin" asp-route-returnurl="@ViewData["ReturnUrl"]" method="post" class="form-horizontal">
                         <div>
                             <p>
                                 @foreach (var provider in loginProviders)
                                 {
                                     <button type="submit" class="btn btn-default" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.Name</button>
                                 }
                             </p>
                         </div>
                     </form>
                 }
             }
         </section>
     </div>
 </div>

 @section Scripts {
     @await Html.PartialAsync("_ValidationScriptsPartial")
 }

退出登录只有一个方法

post  /Account/logout