public static class LogParser

{

    /// <summary>

    /// 对象转为JSON

    /// </summary>

    /// <param name="model"></param>

    /// <returns></returns>

    public static string Parse(Object model)

    {

        if (model == null)

        {

            return "null";

        }

        Type type = model.GetType();

        if (type.IsPrimitive)//基本类型

        {

            if (model is Boolean)

            {

                return model.ToString().ToLower();

            }

            return model.ToString();

        }

        else if (model is string || model is DateTime || model is Enum || model is ObjectId)//字符串

        {

            return $"\"{model.ToString()}\"";

        }

        else if (model is IDictionary dictionary)//Dictionary字段

        {

            return ParseDictionary(dictionary);

        }

        else if (model is IEnumerable enumerable)//可遍历的集合

        {

            return ParseEnumerable(enumerable);

        }

        else //实体对象

        {

            return ParseObject(model);

        }

    }

    /// <summary>

    /// 字典类型

    /// </summary>

    /// <param name="dic"></param>

    /// <returns></returns>

    private static string ParseDictionary(IDictionary dic)

    {

        StringBuilder jsonBuffer = new StringBuilder("{");

        List<string> lstKV = new List<string>();

        foreach (var key in dic.Keys)

        {

            lstKV.Add($"{Parse(key)}:{Parse(dic[key])}");

        }

        jsonBuffer.AppendJoin(",", lstKV);

        jsonBuffer.Append("}");

        return jsonBuffer.ToString();

    }

    /// <summary>

    /// 集合类型

    /// </summary>

    /// <param name="enumerable"></param>

    /// <returns></returns>

    private static string ParseEnumerable(IEnumerable enumerable)

    {

        StringBuilder jsonBuffer = new StringBuilder("[");

        List<string> lstItems = new List<string>();

        foreach (var item in enumerable)

        {

            lstItems.Add(Parse(item));

        }

        jsonBuffer.AppendJoin(",", lstItems);

        jsonBuffer.Append("]");

        return jsonBuffer.ToString();

    }

    /// <summary>

    /// 对象类型

    /// </summary>

    /// <param name="obj"></param>

    /// <returns></returns>

    private static string ParseObject(Object obj)

    {

        StringBuilder jsonBuffer = new StringBuilder("{");

        List<string> lstKV = new List<string>();

        foreach (var prop in obj.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy))

        {

            string value = Parse(prop.GetValue(obj));

            string name = prop.GetCustomAttribute<DescriptionAttribute>()?.Description ?? prop.Name;

            lstKV.Add($"\"{name}\":{value}");

        }

        jsonBuffer.AppendJoin(",", lstKV);

        jsonBuffer.Append("}");

        return jsonBuffer.ToString();

    }

}