/// <summary>
/// 将action内产生的所有输出数据进行缓存
/// </summary>
/// <param name="cache"></param>
/// <param name="key">缓存key</param>
/// <param name="action">产生输出的方法</param>
/// <param name="timeout">超时时间</param>
public static void CachePartial(this MyCache cache, string key, Action action, DateTime timeout)
{
HttpContext context = HttpContext.Current;
if (context == null)
{
throw new InvalidOperationException("不存在的http上下文");
}
var response = context.Response;
byte[] cacheBuffer = cache.Get <byte[]>(key, () =>
{
//清空掉缓冲区的数据
var fr = new FilchResponFilter(response.Filter);
fr.Filch = true;
response.Flush();
response.Filter = fr; //通过过滤器准备窃取action产生的输出数据
action();
response.Flush(); //再次刷新缓冲区以便将action所有产生数据窃取
var bs = fr.FilchBytes();
fr.Filch = false;
return(bs);
}, timeout);
if (cacheBuffer != null && cacheBuffer.Length > 0)
{
response.OutputStream.Write(cacheBuffer, 0, cacheBuffer.Length);
}
}
/// <summary>
/// 将action内产生的所有输出数据进行缓存
/// </summary>
/// <param name="cache"></param>
/// <param name="key">缓存key</param>
/// <param name="action">产生输出的方法</param>
/// <param name="timeout">超时时间</param>
public static void CachePartial(this MyCache cache, string key, Action action, DateTime timeout)
{
HttpContext context = HttpContext.Current;
if (context == null)
throw new InvalidOperationException("不存在的http上下文");
var response = context.Response;
byte[] cacheBuffer = cache.Get<byte[]>(key, () =>
{
//清空掉缓冲区的数据
var fr = new FilchResponFilter(response.Filter);
fr.Filch = true;
response.Flush();
response.Filter = fr; //通过过滤器准备窃取action产生的输出数据
action();
response.Flush(); //再次刷新缓冲区以便将action所有产生数据窃取
var bs = fr.FilchBytes();
fr.Filch = false;
return bs;
}, timeout);
if (cacheBuffer != null && cacheBuffer.Length > 0)
{
response.OutputStream.Write(cacheBuffer, 0, cacheBuffer.Length);
}
}