压缩view的内容，可加过滤器
public class GzipFilter : ActionFilterAttribute
{
public override void OnResultExecuting(ResultExecutingContext filterContext)
{
string acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
if (String.IsNullOrEmpty(acceptEncoding)) return;
var response = filterContext.HttpContext.Response;
acceptEncoding = acceptEncoding.ToUpperInvariant();
if (acceptEncoding.Contains("GZIP"))
{
response.AppendHeader("Content-Encoding", "gzip");
response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
}
else if (acceptEncoding.Contains("DEFLATE"))
{
response.AppendHeader("Content-Encoding", "deflate");
response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
}
}
}