C#——JSON操作类简单封装（DataContractJsonSerializer）

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Framework版本：.Net Framework 4

使用DataContractJsonSerializer时，实体请使用注解，格式如下

1、实体使用注解，并且提供get和set的public访问器

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Runtime.Serialization;

namespace ReligionServer.vo

{

    [DataContract]

    public class Inspection : Model.Inspection, IComparable<vo.Inspection>

    {

        [DataMember(Order = 0)]//Order表示输出顺序

        public new string Time { get; set; }

        [IgnoreDataMember]//表示不参与Json转换

        public String Msg { get; set; }

        public int Order { get; set; }

        [DataMember]

        public String Period { get; set; }

        int IComparable<Inspection>.CompareTo(Inspection other)

        {

            int result;

            //正序

            if (this.RTime > other.RTime) {

                result = ;

            } else if (this.RTime < other.RTime) {

                result = -;

            }

            else {

                result = ;

            }

            //反序

            if (this.Order == -)

            {

                if (result < ) {

                    result = System.Math.Abs(result);

                } else if (result > ) {

                    result =  - result;

                }

            }

            //我好蠢，这里做了排序，又对Service中对noCheckList做了分页（正序和反序分页）

            return result;

        }

    }

}

2、JSON工具源码

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using ReligionServer.util;

using System.Text;

using System.Runtime.Serialization.Json;

namespace ReligionServer.util {

    public class JsonUtil <T>{

        private static DataContractJsonSerializer jsonSerializer;

        private static T t;

        static JsonUtil(){

            t = (T)ReflectionUtil.Instance(new JsonUtil<T>().GetType());

            Console.WriteLine(t.GetType());

            jsonSerializer = new DataContractJsonSerializer(typeof(T));

        }

        public static String ObjToJson(T t){

            using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {

                //System.Diagnostics.Debug.WriteLine(t);

                jsonSerializer.WriteObject(ms, t);

                //System.Diagnostics.Debug.WriteLine(ms.ToArray().Length);

                StringBuilder builder = new StringBuilder();

                builder.Append(Encoding.UTF8.GetString(ms.ToArray()));

                //System.Diagnostics.Debug.WriteLine(builder.Length);

                //System.Diagnostics.Debug.WriteLine(builder.ToString());

                return builder.ToString();

            }

        }

    }

}