求一个解析Json的类

求一个解析Json的类

[C#] 纯文本查看 复制代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace HLoliVideo.Comm
{
    public class JsonHelper
    {

        /// <summary>
        /// 转换对象为JSON格式数据
        /// </summary>
        /// <typeparam name="T">类</typeparam>
        /// <param name="obj">对象</param>
        /// <returns>字符格式的JSON数据</returns>
        public static string GetJSON<T>(object obj) {
            string result = String.Empty;
            try {
                System.Runtime.Serialization.Json.DataContractJsonSerializer serializer =
                new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));
                using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {
                    serializer.WriteObject(ms, obj);
                    result = System.Text.Encoding.UTF8.GetString(ms.ToArray());
                }
            } catch (Exception ex) {
                throw ex;
            }
            return result;
        }
        /// <summary>
        /// 转换List<T>的数据为JSON格式
        /// </summary>
        /// <typeparam name="T">类</typeparam>
        /// <param name="vals">列表值</param>
        /// <returns>JSON格式数据</returns>
        public static string JSON<T>(List<T> vals) {
            System.Text.StringBuilder st = new System.Text.StringBuilder();
            try {
                System.Runtime.Serialization.Json.DataContractJsonSerializer s = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));

                foreach (T city in vals) {
                    using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {
                        s.WriteObject(ms, city);
                        st.Append(System.Text.Encoding.UTF8.GetString(ms.ToArray()));
                    }
                }
            } catch (Exception ex) {
                throw ex;
            }

            return st.ToString();
        }
        /// <summary>
        /// JSON格式字符转换为T类型的对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="jsonStr"></param>
        /// <returns></returns>
        public static T ParseFormByJson<T>(string jsonStr) {
            T obj = Activator.CreateInstance<T>();
            using (System.IO.MemoryStream ms =
            new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(jsonStr))) {
                System.Runtime.Serialization.Json.DataContractJsonSerializer serializer =
                new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));
                return (T)serializer.ReadObject(ms);
            }
        }

        public static string JSON1<SendData>(List<SendData> vals) {
            System.Text.StringBuilder st = new System.Text.StringBuilder();
            try {
                System.Runtime.Serialization.Json.DataContractJsonSerializer s = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(SendData));

                foreach (SendData city in vals) {
                    using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {
                        s.WriteObject(ms, city);
                        st.Append(System.Text.Encoding.UTF8.GetString(ms.ToArray()));
                    }
                }
            } catch (Exception ex) {
                throw ex;
            }

            return st.ToString();
        }

        public static string ToUnicodeString(string str) {
            StringBuilder strResult = new StringBuilder();
            if (!string.IsNullOrEmpty(str)) {
                for (int i = 0; i < str.Length; i++) {
                    strResult.Append("\\u");
                    strResult.Append(((int)str[i]).ToString("x"));
                }
            }
            return strResult.ToString();
        }

        public static string FromUnicodeString(string str) {
            //最直接的方法Regex.Unescape(str);
            StringBuilder strResult = new StringBuilder();
            if (!string.IsNullOrEmpty(str)) {
                string[] strlist = str.Replace("\\", "").Split('u');
                try {
                    for (int i = 1; i < strlist.Length; i++) {
                        long charCode = Convert.ToInt64(strlist[i].TrimStart('-'), 16);
                        strResult.Append((char)charCode);
                    }
                } catch (FormatException ex) {
                    return Regex.Unescape(str);
                }
            }
            return strResult.ToString();
        }
    }
}

乔克斯 发表于 2016-4-14 22:02
[mw_shl_code=csharp,true]using System;
using System.Collections.Generic;
using System.Linq;

谢谢你 ；研究了下newtonsoft.json，还不错

1，通过序列化将.net对象转换为JSON字符串

在web开发过程中，我们经常需要将从数据库中查询到的数据(一般为一个集合，列表或数组等)转换为JSON格式字符串传回客户端，这就需要进行序 列化，这里用到的是JsonConvert对象的SerializeObject方法。其语法格式 为：JsonConvert.SerializeObject(object)，代码中的”object”就是要序列化的.net对象，序列化后返回的是 json字符串。