asp.net-mvc – 与asp.net MVC中的ExceptionHandlerFilter冲突的

发布时间：2020-12-16 03:52:33 所属栏目：asp.Net 来源：网络整理

导读：当我在动作上有CompressFilter并且它们是错误时,我没有得到我的ExceptionHandling命中.请求未返回任何响应.如果我删除压缩过滤器然后它返回错误数组就好了.如何在错误上跳过压缩过滤器,或者让它达到第二个？控制器动作 [HttpPost,CompressAttribute] public

当我在动作上有CompressFilter并且它们是错误时,我没有得到我的ExceptionHandling命中.请求未返回任何响应.如果我删除压缩过滤器然后它返回错误数组就好了.如何在错误上跳过压缩过滤器,或者让它达到第二个？

控制器动作

[HttpPost,CompressAttribute]
 public virtual ActionResult Builder()

Global.asax中

GlobalConfiguration.Configuration.Filters.Add(new ExceptionHandlingAttribute());

CompressFilter

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method,Inherited = true,AllowMultiple = true)]
    public class CompressAttribue : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
                var encodingsAccepted = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
                if (string.IsNullOrEmpty(encodingsAccepted)) return;

                encodingsAccepted = encodingsAccepted.ToLowerInvariant();
                var response = filterContext.HttpContext.Response;

                if (encodingsAccepted.Contains("gzip"))
                {
                    response.AppendHeader("Content-encoding","gzip");
                    response.Filter = new GZipStream(response.Filter,CompressionMode.Compress);
                }
                else if (encodingsAccepted.Contains("deflate"))
                {
                    response.AppendHeader("Content-encoding","deflate");
                    response.Filter = new DeflateStream(response.Filter,CompressionMode.Compress);
                }
        }
    }

解决方法

我将它移动到OnActionExecuted并且它有效,因为它包含Exception属性.

public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            base.OnActionExecuted(filterContext);

            if (filterContext.Exception == null)
            {
                var encodingsAccepted = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
                if (!encodingsAccepted.IsBlank())
                {
                    encodingsAccepted = encodingsAccepted.ToLowerInvariant();
                    var response = filterContext.HttpContext.Response;

                    if (encodingsAccepted.Contains("gzip"))
                    {
                        response.AppendHeader("Content-encoding","gzip");
                        response.Filter = new GZipStream(response.Filter,CompressionMode.Compress);
                    }
                    else if (encodingsAccepted.Contains("deflate"))
                    {
                        response.AppendHeader("Content-encoding","deflate");
                        response.Filter = new DeflateStream(response.Filter,CompressionMode.Compress);
                    }
                }
            }
        }

（编辑：李大同）

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