Web API自定义过滤器未触发 [英] Web API Custom Filter not firing

问题描述

我创建了一个自定义的过滤器属性，该属性将进行一些基本的令牌验证.因此，我首先添加了几行以查看其是否正常工作，但是由于某种原因，它无法正常工作.

I have created a custom Filter Attribute that will be doing some basic token validation. So I started by just adding a few lines to see with it works correctly but for some reason is it not working.

自定义过滤器类

/// <summary>
/// Basic Token Based Authitication 
/// </summary>
public class BasicTokenValidation : ActionFilterAttribute
{
    /// <summary>
    /// Validate Token
    /// </summary>
    /// <param name="actionContext"></param>
    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        HttpContext.Current.Response.Write(" filter1 ");
        Debug.WriteLine("Executing My Filter!");
        if (actionContext.Request.Headers.Authorization == null)
        {
            actionContext.Response = new System.Net.Http.HttpResponseMessage(System.Net.HttpStatusCode.Unauthorized);
        }
        else {
            string authToken = actionContext.Request.Headers.Authorization.Parameter;
        }

        base.OnActionExecuting(actionContext);
    }
}

我在 WebApi.config

config.Filters.Add(new BasicTokenValidation());

这是我装饰控制器方法的方式

Here is how I decorated my Controller method

[HttpGet]
[Route("get/all")]
[BasicTokenValidation]
public IHttpActionResult GetAll()
{
    try
    {

        // Some Code
    }
    catch (Exception ex)
    {
        return InternalServerError(ex);
    }
}

不确定是否需要配置其他内容.确实阅读了一些帖子和文章，但对于某些人来说，我确实拥有创建自定义过滤器所需的一切.

Not sure if I need to configure something else. Did read a few post and articles and to some I do have everything what I need to create custom filters.

任何帮助将不胜感激.

谢谢

推荐答案

您的操作过滤器正在运行.您可以确保使用WebAPI程序集System.Web.Http.Filters而不是MVC程序集System.Web.Http.Mvc吗?

Your action filter is working. Could you ensure that you use WebAPI assembly System.Web.Http.Filters instead of MVC assembly System.Web.Http.Mvc?

using System.Diagnostics;
using System.Web;
using System.Web.Http.Controllers; 
using System.Web.Http.Filters; <--- WebAPI assembly 

namespace YOURNAMESPACE
{
    public class BasicTokenValidation : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext actionContext)
        {
            HttpContext.Current.Response.Write(" filter1 ");
            Debug.WriteLine("Executing My Filter!");
            if (actionContext.Request.Headers.Authorization == null)
            {
                actionContext.Response = 
                    new System.Net.Http.HttpResponseMessage(
                         System.Net.HttpStatusCode.Unauthorized);
            }
            else
            {
                string authToken = actionContext.Request.Headers.Authorization.Parameter;
            }

            base.OnActionExecuting(actionContext);
        }
    }
}

由于您在全局范围内 注册了BasicTokenValidation操作过滤器，因此您可能需要查看使用DelegatingHandler进行基本身份验证我用SO回答.

Since you register BasicTokenValidation action filter globally, you might want to look at Basic Authentication using DelegatingHandler that I answered in SO.

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