ASP.NET JSON(转http://www.360doc.com/content/14/0615/21/18155648_386887590.shtml)

using System;
using System.Collections.Generic;
using System.Text;

namespace Pixysoft.Json
{
    public class CommonJsonModel : CommonJsonModelAnalyzer
    {
        private string rawjson;

        private bool isValue = false;

        private bool isModel = false;

        private bool isCollection = false;

        internal CommonJsonModel(string rawjson)
        {
            this.rawjson = rawjson;

            if (string.IsNullOrEmpty(rawjson))
                throw new Exception("missing rawjson");

            rawjson = rawjson.Trim();

            if (rawjson.StartsWith("{"))
            {
                isModel = true;
            }
            else if (rawjson.StartsWith("["))
            {
                isCollection = true;
            }
            else
            {
                isValue = true;
            }
        }

        public string Rawjson
        {
            get { return rawjson; }
        }

        public bool IsValue()
        {
            return isValue;
        }
        public bool IsValue(string key)
        {
            if (!isModel)
                return false;

            if (string.IsNullOrEmpty(key))
                return false;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                {
                    CommonJsonModel submodel = new CommonJsonModel(model.Value);

                    return submodel.IsValue();
                }
            }

            return false;
        }
        public bool IsModel()
        {
            return isModel;
        }
        public bool IsModel(string key)
        {
            if (!isModel)
                return false;

            if (string.IsNullOrEmpty(key))
                return false;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                {
                    CommonJsonModel submodel = new CommonJsonModel(model.Value);

                    return submodel.IsModel();
                }
            }

            return false;
        }
        public bool IsCollection()
        {
            return isCollection;
        }
        public bool IsCollection(string key)
        {
            if (!isModel)
                return false;

            if (string.IsNullOrEmpty(key))
                return false;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                {
                    CommonJsonModel submodel = new CommonJsonModel(model.Value);

                    return submodel.IsCollection();
                }
            }

            return false;
        }

        /// <summary>
        /// 当模型是对象，返回拥有的key
        /// </summary>
        /// <returns></returns>
        public List<string> GetKeys()
        {
            if (!isModel)
                return null;

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

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                string key = new CommonJsonModel(subjson).Key;

                if (!string.IsNullOrEmpty(key))
                    list.Add(key);
            }

            return list;
        }

        /// <summary>
        /// 当模型是对象，key对应是值，则返回key对应的值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public string GetValue(string key)
        {
            if (!isModel)
                return null;

            if (string.IsNullOrEmpty(key))
                return null;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                    return model.Value;
            }

            return null;
        }

        /// <summary>
        /// 模型是对象，key对应是对象，返回key对应的对象
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public CommonJsonModel GetModel(string key)
        {
            if (!isModel)
                return null;

            if (string.IsNullOrEmpty(key))
                return null;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                {
                    CommonJsonModel submodel = new CommonJsonModel(model.Value);

                    if (!submodel.IsModel())
                        return null;
                    else
                        return submodel;
                }
            }

            return null;
        }

        /// <summary>
        /// 模型是对象，key对应是集合，返回集合
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public CommonJsonModel GetCollection(string key)
        {
            if (!isModel)
                return null;

            if (string.IsNullOrEmpty(key))
                return null;

            foreach (string subjson in base._GetCollection(this.rawjson))
            {
                CommonJsonModel model = new CommonJsonModel(subjson);

                if (!model.IsValue())
                    continue;

                if (model.Key == key)
                {
                    CommonJsonModel submodel = new CommonJsonModel(model.Value);

                    if (!submodel.IsCollection())
                        return null;
                    else
                        return submodel;
                }
            }

            return null;
        }

        /// <summary>
        /// 模型是集合，返回自身
        /// </summary>
        /// <returns></returns>
        public List<CommonJsonModel> GetCollection()
        {
            List<CommonJsonModel> list = new List<CommonJsonModel>();

            if (IsValue())
                return list;

            foreach (string subjson in base._GetCollection(rawjson))
            {
                list.Add(new CommonJsonModel(subjson));
            }

            return list;
        }

        /// <summary>
        /// 当模型是值对象，返回key
        /// </summary>
        private string Key
        {
            get
            {
                if (IsValue())
                    return base._GetKey(rawjson);

                return null;
            }
        }
        /// <summary>
        /// 当模型是值对象，返回value
        /// </summary>
        private string Value
        {
            get
            {
                if (!IsValue())
                    return null;

                return base._GetValue(rawjson);
            }
        }
    }
}