在使用 WebForm 技术开发网站的时候,微软就提供了 Form 身份认证,这使得登录认证简单了许多,不同于 WebForm 以及后来的 Asp.Net Mvc,Asp.Net Core 中的身份认证与之前相比使用更加便捷,本文介绍 Asp.Net Core 2.0 多角色授权认证,首先我们需要在 Startup.cs 中开启授权认证相关模块(中间件),代码如下:
services.AddAuthentication( options=> { options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme; options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme; }) .AddCookie(options => { options.LoginPath = "/Account/"; options.Cookie.HttpOnly = true; }); services.AddTransient<HttpContextAccessor>(); app.UseAuthentication();
之后,我们在登录模块编写多角色登录逻辑代码如下:
[HttpPost] public async Task<IActionResult> Login(string userCode, string userPassword, int userType = 0, string returnUrl = "") { if ((userCode.Trim().ToLower() == "admin" || userCode.Trim().ToLower() == "user") && userPassword.Trim().ToLower() == "123456") { var claimsIdentity = new ClaimsIdentity(CookieAuthenticationDefaults.AuthenticationScheme); claimsIdentity.AddClaim(new Claim(ClaimTypes.Sid, userCode)); if (userType == RoleTypeEnum.UserType_Admin) { claimsIdentity.AddClaim(new Claim(ClaimTypes.Role, RoleTypeEnum.Admin)); } else { claimsIdentity.AddClaim(new Claim(ClaimTypes.Role, RoleTypeEnum.User)); } var claimsPrincipal = new ClaimsPrincipal(claimsIdentity); await HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, claimsPrincipal, new AuthenticationProperties { ExpiresUtc = DateTime.UtcNow.AddMinutes(20) }); if (!string.IsNullOrEmpty(returnUrl)) { return this.Redirect(returnUrl); } else { if (userType == RoleTypeEnum.UserType_Admin) { return this.Redirect(Url.Action("Index", "Home", new { area = "Admin" })); } else { return this.Redirect(Url.Action("Index", "Home", new { area = "User" })); } } } else { return this.Content(string.Format("<script>alert('用户名或者密码错误');location.href='{0}'</script>", Url.Action("Index", "Account")), "text/html;charset=utf8"); } }
本例只提供管理和普通用户两种角色类别,可以根据情况自由添加,接着,我们就可以在相关授权模块添加 Authorize 元属性来进行角色授权,代码如下:
// 管理员模块[Authorize(Roles = RoleTypeEnum.Authorize_Admin)] [Area("Admin")] public class BaseController : Controller { protected string userCode; public BaseController(IHttpContextAccessor contextAccessor) { this.userCode = contextAccessor.HttpContext.User.FindFirst(ClaimTypes.Sid).Value; } protected void InitCookieViewData() { ViewData.Add("UserCode", this.userCode); } } // 用户模块[Authorize(Roles = RoleTypeEnum.Authorize_User)] [Area("User")] public class BaseController : Controller { protected string userCode; public BaseController(IHttpContextAccessor contextAccessor) { this.userCode = contextAccessor.HttpContext.User.FindFirst(ClaimTypes.Sid).Value; } protected void InitCookieViewData() { ViewData.Add("UserCode", this.userCode); } }
到此,多角色授权认证已经结束,而且我们也获得了登录的角色信息,退出登录的代码如下:
public async Task<IActionResult> Logout() { await HttpContext.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme); return this.Redirect(Url.Action("Index", "Account", new { area = "" })); }
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原文地址: https://www.liziwu.net/topic/31.html