参考文章:
Unable to utilize UrlHelper
除了上面参考文章中介绍的方法,其实在 Core MVC的Filter拦截器中要使用UrlHelper非常简单。如下代码就展示了如何在IActionFilter拦截器中构造和使用UrlHelper,其它MVC的Filter拦截器如法炮制即可:
using Microsoft.AspNetCore.Mvc;using Microsoft.AspNetCore.Mvc.Filters;using Microsoft.AspNetCore.Mvc.Routing;using System;namespace WebApi.Filters{public class MyActionFilterAttribute : Attribute, IActionFilter{/// <summary>/// OnActionExecuting方法在Controller的Action执行前执行/// </summary>public void OnActionExecuting(ActionExecutingContext context){IUrlHelper urlHelper = new UrlHelper(new ActionContext(context.HttpContext, context.RouteData, context.ActionDescriptor));string actionUrl = urlHelper.Action("Display", "User", new { id = 15 });}/// <summary>/// OnActionExecuted方法在Controller的Action执行后执行/// </summary>public void OnActionExecuted(ActionExecutedContext context){IUrlHelper urlHelper = new UrlHelper(new ActionContext(context.HttpContext, context.RouteData, context.ActionDescriptor));string actionUrl = urlHelper.Action("About", "Home", new { id = 15 });}}}
OnActionExecuting方法运行效果如下:
OnActionExecuted方法运行效果如下:
Core MVC路由讲解
在 Core 中路由到控制器操作