在某些特定性能要求下， 希望将动态的asp.net 文件转换成静态文件。
可用以下方式实现：
创建一个类： ResponseGenFileFilter
public class ResponseGenFileFilter : Stream
{
private Stream m_sink;
private long m_position;
private FileStream fs;
public ResponseGenFileFilter(Stream sink,string destPath)
{
m_sink = sink;
fs = new FileStream(destPath, FileMode.Create, FileAccess.Write);
}
// The following members of Stream must be overriden.
public override bool CanRead
{ get { return true; } }
public override bool CanSeek
{ get { return false; } }
public override bool CanWrite
{ get { return false; } }
public override long Length
{ get { return 0; } }
public override long Position
{
get { return m_position; }
set { m_position = value; }
}
public override long Seek(long offset, System.IO.SeekOrigin direction)
{
return 0;
}
public override void SetLength(long length)
{
m_sink.SetLength(length);
}
public override void Close()
{
m_sink.Close();
fs.Close();
}
public override void Flush()
{
m_sink.Flush();
}
public override int Read(byte[] buffer, int offset, int count)
{
return m_sink.Read(buffer, offset, count);
}
// Override the Write method to filter Response to a file.
public override void Write(byte[] buffer, int offset, int count)
{
//Write out the response to the browser.
m_sink.Write(buffer, 0, count);
//Write out the response to the file.
fs.Write(buffer, 0, count);
}
}
然后在ASP.NET 的response 处添加如下代码
Response.Filter = new ResponseGenFileFilter(Response.Filter, genPath);
对ASP.NET 和ASP.NET MVC 都有效
ASP.NET 加在 onInit 函数里面
ASP.NET MVC 加在controller action 方法上。