static string ClassToJason(ChinaOpalSearch.SnappsEntity entity)
{
DataContractSerializer serializer = new DataContractSerializer(typeof(ChinaOpalSearch.SnappsEntity));
System.IO.MemoryStream ms = new MemoryStream();
serializer.WriteObject(ms, entity);
System.IO.StreamReader reader = new StreamReader(ms);
ms.Position = 0;
string strRes = reader.ReadToEnd();
reader.Close();
ms.Close();
return(strRes);
}