/// <summary>
    /// json字符串转Dictionary
    /// </summary>
    /// <param name="json"></param>
    /// <returns></returns>
    public static Dictionary<string, object> getValue(string json)
    {
        //解析json对象
        JavaScriptSerializer serializer = new JavaScriptSerializer();
        return (Dictionary<string, object>)serializer.DeserializeObject(json);
    }