/// <summary>
/// 将文件内容输出到客户端客户端浏览器，支持http头操作。
/// </summary>
/// <param name="request"></param>
/// <param name="response"></param>
/// <param name="fileContent">要往客户端浏览器输出的文本内容</param>
/// <param name="isHttpHead">True表示使用http头操作，False表示不使用http头操作</param>
internal static void Output(HttpRequest request, HttpResponse response, string fileContent, string absoluteFilePath, bool isHttpHead)
{
if (string.IsNullOrWhiteSpace(fileContent))
{
return;
}
//wangyunpeng 增加http头，把生成的路径输出出来，方便修改页面使用。
if (absoluteFilePath != null)
{
response.AddHeader("X-Page-Hash", absoluteFilePath);
}
HttpCachePolicy cache = response.Cache;
cache.SetOmitVaryStar(true);//http://www.cnblogs.com/dudu/archive/2011/11/03/outputcache_Bug_vary.html
//#if DEBUG
//本地调试不使用浏览器缓存
//cache.SetCacheability(HttpCacheability.NoCache);
//cache.SetExpires(DateTime.UtcNow.AddYears(-1));
//cache.SetMaxAge(TimeSpan.Zero);
//cache.SetProxyMaxAge(TimeSpan.Zero);
//cache.SetNoServerCaching();
//cache.SetNoStore();
//cache.SetNoTransforms();
//#else
string ifModifiedSince = request.Headers["If-Modified-Since"];
if (isHttpHead)
{
if (
!string.IsNullOrWhiteSpace(ifModifiedSince) &&
TimeSpan.FromTicks(DateTime.Now.Ticks - TypeParseHelper.StrToDateTime(ifModifiedSince).Ticks).Minutes < CACHE_DATETIME)
{
response.StatusCode = (int)System.Net.HttpStatusCode.NotModified;
response.StatusDescription = "Not Modified";
response.End();
return;
}
else
{
cache.SetLastModifiedFromFileDependencies();
cache.SetETagFromFileDependencies();
cache.SetCacheability(HttpCacheability.Public);
cache.SetExpires(DateTime.UtcNow.AddMinutes(CACHE_DATETIME));
TimeSpan timeSpan = TimeSpan.FromMinutes(CACHE_DATETIME);
cache.SetMaxAge(timeSpan);
cache.SetProxyMaxAge(timeSpan);
cache.SetLastModified(DateTime.Now);
cache.SetValidUntilExpires(true);
cache.SetSlidingExpiration(true);
}
}
//#endif
System.Text.Encoding encoding = IOHelper.GetHtmEncoding(fileContent) ?? NVelocityBus._GlobalizationSection.ResponseEncoding;
response.ContentEncoding = encoding;
response.ContentType = response.ContentType;
response.Write(fileContent);
//压缩页面
if (request.ServerVariables["HTTP_X_MICROSOFTAJAX"] == null)
{
if (NVelocityBus.IsAcceptEncoding(request, GZIP))
{
response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
NVelocityBus.SetResponseEncoding(response, GZIP);
}
else if (NVelocityBus.IsAcceptEncoding(request, DEFLATE))
{
response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
NVelocityBus.SetResponseEncoding(response, DEFLATE);
}
}
//强制结束输出
response.End();
}
