using System.Collections.Generic;
using System.IO;
using Newtonsoft.Json;

namespace OnlineStore.Common
{
        /// <summary>
        /// Json帮助类
        /// </summary>
        public class JsonHelper
        {
            /// <summary>
            /// 将对象序列化为JSON格式
            /// </summary>
            /// <param name="o">对象</param>
            /// <returns>json字符串</returns>
            public static string SerializeObject(object o)
            {
                string json = JsonConvert.SerializeObject(o);
                return json;
            }

            /// <summary>
            /// 解析JSON字符串生成对象实体
            /// </summary>
            /// <typeparam name="T">对象类型</typeparam>
            /// <param name="json">json字符串(eg.{"ID":"112","Name":"石子儿"})</param>
            /// <returns>对象实体</returns>
            public static T DeserializeJsonToObject<T>(string json) where T : class
            {
                JsonSerializer serializer = new JsonSerializer();
                StringReader sr = new StringReader(json);
                object o = serializer.Deserialize(new JsonTextReader(sr), typeof(T));
                T t = o as T;
                return t;
            }

            /// <summary>
            /// 解析JSON数组生成对象实体集合
            /// </summary>
            /// <typeparam name="T">对象类型</typeparam>
            /// <param name="json">json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])</param>
            /// <returns>对象实体集合</returns>
            public static List<T> DeserializeJsonToList<T>(string json) where T : class
            {
                JsonSerializer serializer = new JsonSerializer();
                StringReader sr = new StringReader(json);
                object o = serializer.Deserialize(new JsonTextReader(sr), typeof(List<T>));
                List<T> list = o as List<T>;
                return list;
            }

            /// <summary>
            /// 反序列化JSON到给定的匿名对象.
            /// </summary>
            /// <typeparam name="T">匿名对象类型</typeparam>
            /// <param name="json">json字符串</param>
            /// <param name="anonymousTypeObject">匿名对象</param>
            /// <returns>匿名对象</returns>
            public static T DeserializeAnonymousType<T>(string json, T anonymousTypeObject)
            {
                T t = JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject);
                return t;
            }
        }
}