Asp.Net Core 鉴权授权

原文链接： https://blog.csdn.net/Fanbin168/article/details/112431155

以前我们做登陆判断是一般情况是通过实现IAuthorizationFilter 这个过滤器来做的

public class CustomAuthorizationFilterAttribute : Attribute, IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext context)
    {
        //如果方法上面标记了AllowAnonymous特性，则跳过登录校验-以及权限检查
        if (context.ActionDescriptor.EndpointMetadata.Any(item => item is AllowAnonymousAttribute))
        {
            return;
        }
        string userCookie = context.HttpContext.Request.Cookies["CurrentUser"]; //获取Cookie
        if (userCookie == null)
        {
            context.Result = new RedirectResult("/Home/Login");  //没有Cookie则跳转到登陆页面
        }
        else
        {
            return;
        }
    }
}

　　控制器

namespace AuthWeb.Controllers
{
    //[CustomAuthorizationFilter]  //可以将自定义的过滤器写打到类上，或者将这个过滤器在Startup->Configuration方法类做全局注册
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;
 
        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }
 
        public IActionResult Index()
        {
            return View();
        }
        [AllowAnonymous]
        public IActionResult LogIn(string name,string password)
        {
            if ("Admin".Equals(name, StringComparison.CurrentCultureIgnoreCase) && password.Equals("123456"))//用户名忽略大小写比对
            {
                base.HttpContext.Response.Cookies.Append("CurrentUser", "Admin", new Microsoft.AspNetCore.Http.CookieOptions
                {
                    Expires = DateTime.UtcNow.AddMinutes(1)//Cookie 30分钟过期
                });
 
                return new JsonResult(new { Result = true, Message = "登录成功" });
            }
            else
            {
                return new JsonResult(new { Result = false, Message = "登录失败" });
            }
        }
    }
}

　　全局注册CustomAuthorizationFilterAttribute过滤器

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }
 
    public IConfiguration Configuration { get; }
 
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews(options=> {
            options.Filters.Add(typeof(CustomAuthorizationFilterAttribute));//全局权限检查过滤器
        });
    }
}