MVC启用全局GZIP压缩后，异常页面出现乱码，如何解决？

问题描述

我写了一个压缩过滤器：CompressAttribute，设置了一个全局过滤器，但是出现了问题，每当抛出异常时，也会被压缩，所以页面会出现乱码。

这个是常规文件压缩功能代码

  public   override   void  OnActionExecuting（ActionExecutingContext filterContext）
 {
  object  [] actionFilter = filterContext.ActionDescriptor.GetCustomAttributes（ typeof （NoCompress）， false ）; 
  object  [] controllerFilter = filterContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes（ typeof （NoCompress），  false ）; 
  if （controllerFilter.Length ==  1  || actionFilter.Length ==  1 ）
 {
  return ; 
} 
 
  if （filterContext.HttpContext.Request.IsAjaxRequest（））
 {
 返回; 
} 
 
 
 HttpRequestBase request = filterContext.HttpContext.Request; 
 HttpResponseBase response = filterContext.HttpContext.Response;  string  acceptEncoding = request.Headers [  Accept-Encoding ]; 
  if （acceptEncoding ==  null ）
 返回; 
 
  if （acceptEncoding.ToLower（）。包含（  gzip））
 {
 response.Filter =  new  GZipStream（response.Filter，compress ）; 
 response.AppendHeader（  Content-Encoding，  gzip）; 
} 
  else   if （acceptEncoding.ToLower（）。Contains（  deflate））
 {
 response.Filter =  new  DeflateStream（response.Filter，compress）; 
 response.AppendHeader（  Content-Encoding，  deflate）; 
} 
} 
 

我想，继承IException接口实现，每当出现异常时，我都会GZIP压缩解压缩，但没有效果，或者仍然出现凌乱的代码问题。以下是我的解压缩代码。

  public   void  OnException（ExceptionContext filterContext）
 {
  string  acceptEncoding = filterContext.HttpContext.Request.Headers [   Accept-Encoding]; 
  if （ String  .IsNullOrEmpty（acceptEncoding））返回; 
  var  response = filterContext.HttpContext.Response; 
 acceptEncoding = acceptEncoding.ToUpperInvariant（）; 
  var  obj =  new  GZipStream（response.Filter，decompress）; 
  if （acceptEncoding.Contains（  GZIP ））
 {
  //   response.AppendHeader（Content-Encoding ，gzip）;  
 response.Filter = obj; 
} 
  else   if （acceptEncoding.Contains（  DEFLATE））
 {
  //   response.AppendHeader（Content-Encoding，deflate）;  
 response.Filter =  new  DeflateStream（response.Filter，decompress）; 
} 
} 

我不知道我哪里错了，请大家帮帮我，谢谢！

解决方案

I wrote a compressed filter: CompressAttribute, set up a global filter, but there was a problem, whenever an exception is thrown, also will be compressed, so the page will appear garbled.
This is a regular file compression feature code

public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        object[] actionFilter = filterContext.ActionDescriptor.GetCustomAttributes(typeof(NoCompress), false);
        object[] controllerFilter = filterContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes(typeof(NoCompress), false);
        if (controllerFilter.Length == 1 || actionFilter.Length == 1)
        {
            return;
        }

        if (filterContext.HttpContext.Request.IsAjaxRequest())
        {
            return;
        }


        HttpRequestBase request = filterContext.HttpContext.Request;
        HttpResponseBase response = filterContext.HttpContext.Response; string acceptEncoding = request.Headers["Accept-Encoding"];
        if (acceptEncoding == null)
            return;

        if (acceptEncoding.ToLower().Contains("gzip"))
        {
            response.Filter = new GZipStream(response.Filter, compress);
            response.AppendHeader("Content-Encoding", "gzip");
        }
        else if (acceptEncoding.ToLower().Contains("deflate"))
        {
            response.Filter = new DeflateStream(response.Filter, compress);
            response.AppendHeader("Content-Encoding", "deflate");
        }
    }

I thought, inheritance IException interface implementations, whenever abnormal, I on GZIP compression decompression, but no effect, or still appear messy code problem. The following is my decompression code.

public void OnException(ExceptionContext filterContext)
    {
        string acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
        if (String.IsNullOrEmpty(acceptEncoding)) return;
        var response = filterContext.HttpContext.Response;
        acceptEncoding = acceptEncoding.ToUpperInvariant();
        var obj = new GZipStream(response.Filter, decompress);
        if (acceptEncoding.Contains("GZIP"))
        {
         //   response.AppendHeader("Content-Encoding", "gzip");
            response.Filter = obj;
        }
        else if (acceptEncoding.Contains("DEFLATE"))
        {
            //   response.AppendHeader("Content-Encoding", "deflate");
            response.Filter = new DeflateStream(response.Filter, decompress);
        }
    }

I don''t know where I was wrong, ask everybody to help me，thank you!

解决方案

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