/// <summary>
/// 转为JSONstr
/// </summary>
/// <returns></returns>
public string ToJsonStringByFastJson()
{
Dictionary <int, Node> ele = this.elements;
JsonNode[] jn = new JsonNode[ele.Count];
int i = 0;
foreach (Node n in ele.Values)
{
jn[i] = JsonNode.Create(n);
i++;
}
//fastJSON.JSON.ClearReflectionCache();
return(jn.ToJson_Fast());
}