/// <summary>
/// 获取缓存对象
/// </summary>
/// <typeparam name="T">泛型</typeparam>
/// <param name="_h"></param>
/// <param name="key">缓存key</param>
/// <returns></returns>
public static T GetCache <T>(this HttpContextBase _h, string key)
{
object obj = _h.GetCache(key);
return(obj == null ? default : (T)obj);
}
