/// <summary>
/// 构造函数
/// </summary>
public ApiOutputCacheAttribute()
{
this.Provider = ApiOutputCacheConfig.DefaultProvider;
}
/// <summary>
/// set default provider
/// </summary>
/// <param name="provider"></param>
public static void SetDefaultProvider(ApiOutputCacheProvider provider)
{
DefaultProvider = provider ?? throw new ArgumentNullException(nameof(provider));
}