在.Net Core 中使用AuthorizeFilter或者ActionFilterAttribute来实现登录权限验证和授权
一、AuthorizeFilter
新建授权类AllowAnonymous继承AuthorizeFilter，IAllowAnonymousFilter
public class AllowAnonymous : AuthorizeFilter, IAllowAnonymousFilter{ }新建拦截类继承AuthorizeFilter
public class LoginAuthorzation : AuthorizeFilter{}在拦截类里加入处理请求的方法
???????/// <summary> ???????/// ?请求验证，当前验证部分不要抛出异常，ExceptionFilter不会处理 ???????/// </summary> ???????/// <param name="context">请求内容信息</param> ???????public override async Task OnAuthorizationAsync(AuthorizationFilterContext context) ???????{ ???????????if (IsHaveAllow(context.Filters)) ???????????{ ???????????????return; ???????????} ????????????//解析url ???????????// {/ Home / Index} ???????????var url = context.HttpContext.Request.Path.Value; ???????????if (string.IsNullOrWhiteSpace(url)) ???????????{ ???????????????return; ???????????} ???????????var list = url.Split("/"); ???????????if (list.Length<=0||url=="/") ???????????{ ???????????????return; ???????????} ???????????var controllerName = list[1].ToString().Trim(); ???????????var actionName = list[2].ToString().Trim(); ????????????//验证 ???????????var flag=PowerIsTrue.IsHavePower(controllerName, actionName); ???????????if (flag.Item1!=0) ???????????{ ???????????????context.Result = new RedirectResult("/Home/Index"); ???????????} ???????} //判断是否不需要权限public static bool IsHaveAllow(IList<IFilterMetadata> filers) ???????{ ???????????for (int i = 0; i < filers.Count; i++) ???????????{ ???????????????if (filers[i] is IAllowAnonymousFilter) ???????????????{ ???????????????????return true; ???????????????} ???????????} ???????????return false; ???????} ???新建一个业务逻辑判断的类
public static (int,string) IsHavePower(string controllerName,string actionName) ???????{ ???????????return (0,"通过"); ???????}在Startup注册
services.AddMvc(options => ???????????{ ???????????????options.Filters.Add<LoginAuthorzation>(); // 添加身份验证过滤器 ???????????}
context.HttpContext.Request.Path.Value 获取请求过来的url
二、ActionFilterAttribute
创建权限判断类继承ActionFilterAttribute
public class ActionFilterAttributeLogin: ActionFilterAttribute ???{ ???????public override void OnActionExecuting(ActionExecutingContext filterContext) ????????{ ???????????var isDefined = false; ???????????var controllerActionDescriptor = filterContext.ActionDescriptor as ControllerActionDescriptor; ???????????if (controllerActionDescriptor != null) ???????????{ ???????????????isDefined = controllerActionDescriptor.MethodInfo.GetCustomAttributes(inherit: true) ?????????????????.Any(a => a.GetType().Equals(typeof(NoPermissionRequiredAttribute))); ???????????} ???????????if (isDefined) return; ???????????if (string.IsNullOrWhiteSpace(filterContext.HttpContext.Request.Query["LoginInfo"].ToString())) ???????????{ ???????????????var item = new ContentResult(); ???????????????item.Content = "没得权限"; ??????????????????????????????filterContext.Result = new RedirectResult("/Account/Login"); ???????????} ???????????base.OnActionExecuting(filterContext); ???????} ???????public class NoPermissionRequiredAttribute : ActionFilterAttribute ???????{ ???????????public override void OnActionExecuting(ActionExecutingContext filterContext) ???????????{ ???????????????base.OnActionExecuting(filterContext); ???????????} ???????} ???}在Startup注册
services.AddMvc(options => ???????????{ ???????????????options.Filters.Add<ActionFilterAttributeLogin>(); // 添加身份验证过滤器 -- 菜单操作权限 ???????????}filterContext.ActionDescriptor as ControllerActionDescriptor 获取请求进来的控制器与方法
controllerActionDescriptor.MethodInfo.GetCustomAttributes(inherit: true)
.Any(a => a.GetType().Equals(typeof(NoPermissionRequiredAttribute))) 判断请求的控制器和方法有没有加上NoPermissionRequiredAttribute（不需要权限）
string.IsNullOrWhiteSpace(filterContext.HttpContext.Request.Query["LoginInfo"].ToString()) 判断请求头是否有标识
.Net Core 权限验证与授权（AuthorizeFilter、ActionFilterAttribute）
原文地址：https://www.cnblogs.com/hulizhong/p/10779687.html