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.net - 尝试向 MvcHandler 添加功能

转载 作者:行者123 更新时间:2023-12-05 00:38:11 26 4
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我目前正在尝试将 301 重定向添加到我在 MVC 中的路由

为此,我尝试从 MvcHandler 继承。处理程序使用正确的值进行实例化。但我永远无法调试重写的方法。

有人可以向我展示这方面的工作尝试吗? asp.net 管道似乎只是在做自己的事情......

public class CodeHttpHandler : MvcHandler
{
public CodeHttpHandler(RequestContext p_requestContext)
: base(p_requestContext)
{
}
protected override void ProcessRequest(HttpContext p_httpContext)
{
}
protected override void ProcessRequest(HttpContextBase p_httpContext)
{
}
}

更新:

这是我目前找到的解决方案:

public class CodeRouteHandler : IRouteHandler
{
public System.Web.IHttpHandler GetHttpHandler(RequestContext requestContext)
{
return new CodeHandler(requestContext);
}
}

public class CodeRouteConstants
{
public const string CODE = "code";
public const string REDIRECT = "Redirect";
}

public class CodeHandler : MvcHandler
{
public CodeHandler(RequestContext requestContext)
: base(requestContext)
{
}

private int? HandleCodedRoute(System.Web.HttpContextBase httpContext)
{
var context = httpContext.Request.RequestContext.RouteData;
if (context.DataTokens.ContainsKey(CodeRouteConstants.CODE))
{
var statusCode = Int32.Parse(context.DataTokens[CodeRouteConstants.CODE] as string ?? "500");

httpContext.Response.StatusCode = statusCode;

if (context.DataTokens.ContainsKey(CodeRouteConstants.REDIRECT))
{
var redirectionMap = context.DataTokens[CodeRouteConstants.REDIRECT] as string ?? "404";

foreach (var v in context.Values)
{
redirectionMap = redirectionMap.Replace(string.Format("{{{0}}}", v.Key), v.Value as string);
}

httpContext.Response.AddHeader("Location", redirectionMap);
}

httpContext.Response.End();
return statusCode;
}
return null;
}

protected override System.IAsyncResult BeginProcessRequest(System.Web.HttpContext httpContext, System.AsyncCallback callback, object state)
{
var statusCode = HandleCodedRoute(new HttpContextWrapper(httpContext));
if (statusCode.HasValue)
{
return null;
}
return base.BeginProcessRequest(httpContext, callback, state);
}

protected override System.IAsyncResult BeginProcessRequest(System.Web.HttpContextBase httpContext, System.AsyncCallback callback, object state)
{
return base.BeginProcessRequest(httpContext, callback, state);
}

protected override void ProcessRequest(System.Web.HttpContext httpContext)
{
base.ProcessRequest(httpContext);
}
protected override void ProcessRequest(System.Web.HttpContextBase httpContext)
{
base.ProcessRequest(httpContext);
}
}

最佳答案

嘿,我也刚遇到这个问题。我在 ProcessRequest() 中的断点从未被击中。我没有针对您的问题的完整解决方案,但我确实有一个解决方法可以让您得到想要的东西。尝试从 MvcHandler 而不是 ProcessRequest() 覆盖 BeginProcessRequest() 方法。上下文应该包含路由(操作和 Controller )信息,如果这是您正在寻找的信息。

关于.net - 尝试向 MvcHandler 添加功能,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2841307/

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