C#实体类对象修改日志记录-白红宇

C#实体类对象修改日志记录

阅读量：4971 次

发布时间：2019-06-12

本文共 2534 字，大约阅读时间需要 8 分钟。

public static class LogParser{    ///     /// 对象转为JSON    /// 
    ///     /// 
        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);        }    }    ///     /// 字典类型    /// 
    ///     /// 
        private static string ParseDictionary(IDictionary dic)    {        StringBuilder jsonBuffer = new StringBuilder("{");        List
    
      lstKV = new List
     
      ();        foreach (var key in dic.Keys)        {            lstKV.Add($"{Parse(key)}:{Parse(dic[key])}");        }        jsonBuffer.AppendJoin(",", lstKV);        jsonBuffer.Append("}");        return jsonBuffer.ToString();    }    /// 
          /// 集合类型    /// 
    /// 
          /// 
          private static string ParseEnumerable(IEnumerable enumerable)    {        StringBuilder jsonBuffer = new StringBuilder("[");        List
      
        lstItems = new List
       
        ();        foreach (var item in enumerable)        {            lstItems.Add(Parse(item));        }        jsonBuffer.AppendJoin(",", lstItems);        jsonBuffer.Append("]");        return jsonBuffer.ToString();    }    /// 
            /// 对象类型    /// 
    /// 
            /// 
            private static string ParseObject(Object obj)    {        StringBuilder jsonBuffer = new StringBuilder("{");        List
        
          lstKV = new List
         
          (); foreach (var prop in obj.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy)) { string value = Parse(prop.GetValue(obj)); string name = prop.GetCustomAttribute
          
           ()?.Description ?? prop.Name; lstKV.Add($"\"{name}\":{value}"); } jsonBuffer.AppendJoin(",", lstKV); jsonBuffer.Append("}"); return jsonBuffer.ToString(); }}