Question

我想实现我的自定义消息处理程序，它将检查每个请求中必须存在的自定义标头。

如果我的自定义标头存在，请求将通过并且如果标头不在那里将触及控制器，请求被拒绝并带有自定义错误消息。

我的问题不是：如果我以这种方式实现我的处理程序，这意味着所有请求都必须有头但是我需要一个gate我可以在没有该头的情况下调用，并且消息处理程序必须忽略该请求并且在没有自定义标题的情况下点击控制器。

有可能实现这一目标吗？或者我如何实现我的消息处理程序，它将忽略对特定控制器或类似控制器的某些调用......？

Answer 1

你可以尝试这个..（未经测试）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http;


 public abstract class EnforceMyBusinessRulesController : ApiController
{

    protected override void Initialize(System.Web.Http.Controllers.HttpControllerContext controllerContext)
    {

        /*

            Use any of these to enforce your rules;

            http://msdn.microsoft.com/en-us/library/system.web.http.apicontroller%28v=vs.108%29.aspx

            Public property Configuration   Gets or sets the HttpConfiguration of the current ApiController.
            Public property ControllerContext   Gets the HttpControllerContext of the current ApiController.
            Public property ModelState  Gets the model state after the model binding process.
            Public property Request Gets or sets the HttpRequestMessage of the current ApiController.
            Public property Url Returns an instance of a UrlHelper, which is used to generate URLs to other APIs.
            Public property User    Returns the current principal associated with this request. 
        */

        base.Initialize(controllerContext);

        bool iDontLikeYou = true; /* Your rules here */
        if (iDontLikeYou)
        {
            throw new HttpResponseException(new System.Net.Http.HttpResponseMessage(System.Net.HttpStatusCode.NotFound));
        }


    }

}



public class ProductsController : EnforceMyBusinessRulesController
{

    protected override void Initialize(System.Web.Http.Controllers.HttpControllerContext controllerContext)
    {
        base.Initialize(controllerContext);
    }


}

ASP.NET Web API消息处理程序

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