Question

我需要能够根据请求中的上下文从MVC返回不同的favicon图像。我尝试了一些但似乎无法拦截favicon.ico的请求并将自定义ico文件写入响应。我尝试过自定义路由处理程序和自定义http处理程序。在这两种情况下，他们似乎永远不会被召唤。有人可以帮助解决问题吗？

自定义路由处理程序

这是路由处理程序代码

public class FaviconRouteHandler : IRouteHandler
{
    public IHttpHandler GetHttpHandler(RequestContext requestContext)
    {
        var path = "/favicon.ico"; // business logic added here to set dynamic source path

        var context = HttpContext.Current;

        context.Response.ContentType = "image/x-icon";
        context.RewritePath(path);

        return new DefaultHttpHandler();
    }
}

以下是global.asax

中添加的路由配置

routes.Add(new Route("favicon.ico", new FaviconRouteHandler()));

自定义HTTP处理程序

这是http处理程序代码

public class FaviconHttpHandler : IHttpHandler, IRouteHandler
{
    public RequestContext RequestContext { get; set; }

    public FaviconHttpHandler(RequestContext requestContext)
    {
        this.RequestContext = requestContext;
    }

    public bool IsReusable
    {
        get { return true; }
    }

    public void ProcessRequest(HttpContext context)
    {
        var path = "/favicon.ico"; // business logic added here to set dynamic source path

        var response = context.Response;
        response.ContentType = "image/x-icon";
        response.WriteFile(path);
        response.End();
    }

    public IHttpHandler GetHttpHandler(RequestContext requestContext)
    {
        throw new NotImplementedException();
    }
}

这是添加到system.webserver的处理程序注册。另一个被添加到web.config文件中的system.web

  <add name="FaviconHandler" verb="GET" path="favicon.ico" type="MyProject.FaviconHttpHandler"/>

上下文：我正在使用VS 2013，MVC4

MVC中的动态Favicon图像

0 个答案: