要獲取發送的字節,您可以使用HttpResponse.Filter
屬性。正如MSDN文檔所說,此屬性獲取或設置用於在傳輸之前修改HTTP實體主體的包裝過濾器對象。
您可以創建一個新System.IO.Stream
它包裝現有的HttpResponse.Filter
流並通過他們之前計數到Write
方法傳遞的字節數。例如:
public class ContentLengthModule : IHttpModule
{
public void Init(HttpApplication context)
{
context.BeginRequest += OnBeginRequest;
context.EndRequest += OnEndRequest;
}
void OnBeginRequest(object sender, EventArgs e)
{
var application = (HttpApplication) sender;
application.Response.Filter = new ContentLengthFilter(application.Response.Filter);
}
void OnEndRequest(object sender, EventArgs e)
{
var application = (HttpApplication) sender;
var contentLengthFilter = (ContentLengthFilter) application.Response.Filter;
var contentLength = contentLengthFilter.BytesWritten;
}
public void Dispose()
{
}
}
public class ContentLengthFilter : Stream
{
private readonly Stream _responseFilter;
public int BytesWritten { get; set; }
public ContentLengthFilter(Stream responseFilter)
{
_responseFilter = responseFilter;
}
public override void Flush()
{
_responseFilter.Flush();
}
public override long Seek(long offset, SeekOrigin origin)
{
return _responseFilter.Seek(offset, origin);
}
public override void SetLength(long value)
{
_responseFilter.SetLength(value);
}
public override int Read(byte[] buffer, int offset, int count)
{
return _responseFilter.Read(buffer, offset, count);
}
public override void Write(byte[] buffer, int offset, int count)
{
BytesWritten += count;
_responseFilter.Write(buffer, offset, count);
}
public override bool CanRead
{
get { return _responseFilter.CanRead; }
}
public override bool CanSeek
{
get { return _responseFilter.CanSeek; }
}
public override bool CanWrite
{
get { return _responseFilter.CanWrite; }
}
public override long Length
{
get { return _responseFilter.Length; }
}
public override long Position
{
get { return _responseFilter.Position; }
set { _responseFilter.Position = value; }
}
}
有什麼我可以添加,這將有助於回答這個問題? – 2009-02-05 21:16:16