JSON帮助类

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Runtime.Serialization.Json;
using System.IO;

namespace A_HDL_CLassToolDLL
{
    public class JSONTOOL
    {

        /// <summary>
        /// 序列化集合对象
        /// </summary>
        public static string JsonSerializerByArrayData<T>(T[] tArray)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
            MemoryStream ms = new MemoryStream();
            ser.WriteObject(ms, tArray);
            string jsonString = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
            string p = @"\\/Date(\d+)\+\d+\\/";
            MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
            Regex reg = new Regex(p);
            jsonString = reg.Replace(jsonString, matchEvaluator);
            return jsonString;
        }

        /// <summary>
        /// 序列化单个对象
        /// </summary>
        public static string JsonSerializerBySingleData<T>(T t)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream();
            ser.WriteObject(ms, t);
            string jsonString = Encoding.UTF8.GetString(ms.ToArray());
            ms.Close();
            string p = @"\\/Date(\d+)\+\d+\\/";
            MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
            Regex reg = new Regex(p);
            jsonString = reg.Replace(jsonString, matchEvaluator);
            return jsonString;
        }

        /// <summary>
        /// 反序列化单个对象
        /// </summary>
        public static T JsonDeserializeBySingleData<T>(string jsonString)
        {
            //将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"\/Date(1294499956278+0800)\/"格式
            string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
            MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
            Regex reg = new Regex(p);
            jsonString = reg.Replace(jsonString, matchEvaluator);
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T obj = (T)ser.ReadObject(ms);
            return obj;
        }

        /// <summary>
        /// 反序列化集合对象
        /// </summary>
        public static T[] JsonDeserializeByArrayData<T>(string jsonString)
        {
            //将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"\/Date(1294499956278+0800)\/"格式
            string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
            MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
            Regex reg = new Regex(p);
            jsonString = reg.Replace(jsonString, matchEvaluator);
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            T[] arrayObj = (T[])ser.ReadObject(ms);
            return arrayObj;
        }

        /// <summary>
        /// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串
        /// </summary>
        private static string ConvertJsonDateToDateString(Match m)
        {
            string result = string.Empty;
            DateTime dt = new DateTime(1970, 1, 1);
            dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));
            dt = dt.ToLocalTime();
            result = dt.ToString("yyyy-MM-dd HH:mm:ss");
            return result;
        }

        /// <summary>
        /// 将时间字符串转为Json时间
        /// </summary>
        private static string ConvertDateStringToJsonDate(Match m)
        {
            string result = string.Empty;
            DateTime dt = DateTime.Parse(m.Groups[0].Value);
            dt = dt.ToUniversalTime();
            TimeSpan ts = dt - DateTime.Parse("1970-01-01");
            result = string.Format("\\/Date({0}+0800)\\/", ts.TotalMilliseconds);
            return result;
        }

        /// <summary>
        /// List转成json
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="list"></param>
        /// <returns></returns>
        public static string ListToJson<T>(IList<T> list)
        {
            object obj = list[0];
            return ListToJson<T>(list, obj.GetType().Name);
        }

        /// <summary>
        /// 对象转换为Json字符串
        /// </summary>
        /// <param name="jsonObject">对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(object jsonObject)
        {
            try
            {
                StringBuilder jsonString = new StringBuilder();
                jsonString.Append("{");
                PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
                for (int i = 0; i < propertyInfo.Length; i++)
                {
                    object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
                    if (objectValue == null)
                    {
                        continue;
                    }
                    StringBuilder value = new StringBuilder();
                    if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
                    {
                        value.Append("\"" + objectValue.ToString() + "\"");
                    }
                    else if (objectValue is string)
                    {
                        value.Append("\"" + objectValue.ToString() + "\"");
                    }
                    else if (objectValue is IEnumerable)
                    {
                        value.Append(ToJson((IEnumerable)objectValue));
                    }
                    else
                    {
                        value.Append("\"" + objectValue.ToString() + "\"");
                    }
                    jsonString.Append("\"" + propertyInfo[i].Name + "\":" + value + ","); ;
                }
                return jsonString.ToString().TrimEnd(‘,‘) + "}";
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 对象集合转换Json
        /// </summary>
        /// <param name="array">集合对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString += ToJson(item) + ",";
            }
            if (jsonString.Length > 1)
            {
                jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            }
            else
            {
                jsonString = "[]";
            }
            return jsonString + "]";
        }

        /// <summary>
        /// 普通集合转换Json
        /// </summary>
        /// <param name="array">集合对象</param>
        /// <returns>Json字符串</returns>
        public static string ToArrayString(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString = ToJson(item.ToString()) + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "]";
        }

        /// <summary>
        /// Datatable转换为Json
        /// </summary>
        /// <param name="table">Datatable对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(DataTable dt)
        {
            StringBuilder jsonString = new StringBuilder();
            jsonString.Append("[");
            DataRowCollection drc = dt.Rows;
            for (int i = 0; i < drc.Count; i++)
            {
                jsonString.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    string strKey = dt.Columns[j].ColumnName;
                    string strValue = drc[i][j].ToString();
                    Type type = dt.Columns[j].DataType;
                    jsonString.Append("\"" + strKey + "\":");
                    //过滤数据
                    //strValue = StringFormat(strValue, type);
                    if (j < dt.Columns.Count - 1)
                    {
                        jsonString.Append(strValue + ",");
                    }
                    else
                    {
                        jsonString.Append(strValue);
                    }
                }
                jsonString.Append("},");
            }
            jsonString.Remove(jsonString.Length - 1, 1);
            jsonString.Append("]");
            if (jsonString.Length == 1)
            {
                return "[]";
            }
            return jsonString.ToString();
        }

        /// <summary>
        /// List转成json
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="jsonName"></param>
        /// <param name="list"></param>
        /// <returns></returns>
        public static string ListToJson<T>(IList<T> list, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName))
                jsonName = list[0].GetType().Name;
            Json.Append("{\"" + jsonName + "\":[");
            if (list.Count > 0)
            {
                for (int i = 0; i < list.Count; i++)
                {
                    T obj = Activator.CreateInstance<T>();
                    PropertyInfo[] pi = obj.GetType().GetProperties();
                    Json.Append("{");
                    for (int j = 0; j < pi.Length; j++)
                    {
                        Type type;
                        object o = pi[j].GetValue(list[i], null);
                        string v = string.Empty;
                        if (o != null)
                        {
                            type = o.GetType();
                            v = o.ToString();
                        }
                        else
                        {
                            type = typeof(string);
                        }

                        Json.Append("\"" + pi[j].Name.ToString() + "\":" + v);//过滤数据// StringFormat(v, type));

                        if (j < pi.Length - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < list.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }

        /// <summary>
        /// DataSet转换为Json
        /// </summary>
        /// <param name="dataSet">DataSet对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(DataSet dataSet)
        {
            string jsonString = "{";
            foreach (DataTable table in dataSet.Tables)
            {
                jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
            }
            jsonString = jsonString.TrimEnd(‘,‘);
            return jsonString + "}";
        }

        /// <summary>
        /// DataReader转换为Json
        /// </summary>
        /// <param name="dataReader">DataReader对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(IDataReader dataReader)
        {
            try
            {
                StringBuilder jsonString = new StringBuilder();
                jsonString.Append("[");

                while (dataReader.Read())
                {
                    jsonString.Append("{");
                    for (int i = 0; i < dataReader.FieldCount; i++)
                    {
                        Type type = dataReader.GetFieldType(i);
                        string strKey = dataReader.GetName(i);
                        string strValue = dataReader[i].ToString();
                        jsonString.Append("\"" + strKey + "\":");
                        //过滤数据
                        //strValue = StringFormat(strValue, type);
                        if (i < dataReader.FieldCount - 1)
                        {
                            jsonString.Append(strValue + ",");
                        }
                        else
                        {
                            jsonString.Append(strValue);
                        }
                    }
                    jsonString.Append("},");
                }
                if (!dataReader.IsClosed)
                {
                    dataReader.Close();
                }
                jsonString.Remove(jsonString.Length - 1, 1);
                jsonString.Append("]");
                if (jsonString.Length == 1)
                {
                    return "[]";
                }
                return jsonString.ToString();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// DataTable转成Json
        /// </summary>
        /// <param name="jsonName"></param>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static string ToJson(DataTable dt, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName))
                jsonName = dt.TableName;
            Json.Append("{\"" + jsonName + "\":[");
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    Json.Append("{");
                    for (int j = 0; j < dt.Columns.Count; j++)
                    {
                        Type type = dt.Rows[i][j].GetType();
                        Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":");
                            //过滤数据
                            //+ StringFormat(dt.Rows[i][j] is DBNull ? string.Empty : dt.Rows[i][j].ToString(), type));
                        if (j < dt.Columns.Count - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < dt.Rows.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }

    }
}
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Reflection;
using System.Collections;
using System.Data.Common;

namespace DotNet.Utilities
{
    //JSON转换类
    public class ConvertJson
    {
        #region 私有方法
        /// <summary>
        /// 过滤特殊字符
        /// </summary>
        private static string String2Json(String s)
        {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < s.Length; i++)
            {
                char c = s.ToCharArray()[i];
                switch (c)
                {
                    case ‘\"‘:
                        sb.Append("\\\""); break;
                    case ‘\\‘:
                        sb.Append("\\\\"); break;
                    case ‘/‘:
                        sb.Append("\\/"); break;
                    case ‘\b‘:
                        sb.Append("\\b"); break;
                    case ‘\f‘:
                        sb.Append("\\f"); break;
                    case ‘\n‘:
                        sb.Append("\\n"); break;
                    case ‘\r‘:
                        sb.Append("\\r"); break;
                    case ‘\t‘:
                        sb.Append("\\t"); break;
                    default:
                        sb.Append(c); break;
                }
            }
            return sb.ToString();
        }

        /// <summary>
        /// 格式化字符型、日期型、布尔型
        /// </summary>
        private static string StringFormat(string str, Type type)
        {
            if (type == typeof(string))
            {
                str = String2Json(str);
                str = "\"" + str + "\"";
            }
            else if (type == typeof(DateTime))
            {
                str = "\"" + str + "\"";
            }
            else if (type == typeof(bool))
            {
                str = str.ToLower();
            }
            else if (type != typeof(string) && string.IsNullOrEmpty(str))
            {
                str = "\"" + str + "\"";
            }
            return str;
        }
        #endregion

        #region List转换成Json
        /// <summary>
        /// List转换成Json
        /// </summary>
        public static string ListToJson<T>(IList<T> list)
        {
            object obj = list[0];
            return ListToJson<T>(list, obj.GetType().Name);
        }

        /// <summary>
        /// List转换成Json
        /// </summary>
        public static string ListToJson<T>(IList<T> list, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;
            Json.Append("{\"" + jsonName + "\":[");
            if (list.Count > 0)
            {
                for (int i = 0; i < list.Count; i++)
                {
                    T obj = Activator.CreateInstance<T>();
                    PropertyInfo[] pi = obj.GetType().GetProperties();
                    Json.Append("{");
                    for (int j = 0; j < pi.Length; j++)
                    {
                        Type type = pi[j].GetValue(list[i], null).GetType();
                        Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type));

                        if (j < pi.Length - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < list.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }
        #endregion

        #region 对象转换为Json
        /// <summary>
        /// 对象转换为Json
        /// </summary>
        /// <param name="jsonObject">对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(object jsonObject)
        {
            string jsonString = "{";
            PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
            for (int i = 0; i < propertyInfo.Length; i++)
            {
                object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
                string value = string.Empty;
                if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
                {
                    value = "‘" + objectValue.ToString() + "‘";
                }
                else if (objectValue is string)
                {
                    value = "‘" + ToJson(objectValue.ToString()) + "‘";
                }
                else if (objectValue is IEnumerable)
                {
                    value = ToJson((IEnumerable)objectValue);
                }
                else
                {
                    value = ToJson(objectValue.ToString());
                }
                jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "}";
        }
        #endregion

        #region 对象集合转换Json
        /// <summary>
        /// 对象集合转换Json
        /// </summary>
        /// <param name="array">集合对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString += ToJson(item) + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "]";
        }
        #endregion

        #region 普通集合转换Json
        /// <summary>
        /// 普通集合转换Json
        /// </summary>
        /// <param name="array">集合对象</param>
        /// <returns>Json字符串</returns>
        public static string ToArrayString(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString = ToJson(item.ToString()) + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "]";
        }
        #endregion

        #region  DataSet转换为Json
        /// <summary>
        /// DataSet转换为Json
        /// </summary>
        /// <param name="dataSet">DataSet对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(DataSet dataSet)
        {
            string jsonString = "{";
            foreach (DataTable table in dataSet.Tables)
            {
                jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
            }
            jsonString = jsonString.TrimEnd(‘,‘);
            return jsonString + "}";
        }
        #endregion

        #region Datatable转换为Json
        /// <summary>
        /// Datatable转换为Json
        /// </summary>
        /// <param name="table">Datatable对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(DataTable dt)
        {
            StringBuilder jsonString = new StringBuilder();
            jsonString.Append("[");
            DataRowCollection drc = dt.Rows;
            for (int i = 0; i < drc.Count; i++)
            {
                jsonString.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    string strKey = dt.Columns[j].ColumnName;
                    string strValue = drc[i][j].ToString();
                    Type type = dt.Columns[j].DataType;
                    jsonString.Append("\"" + strKey + "\":");
                    strValue = StringFormat(strValue, type);
                    if (j < dt.Columns.Count - 1)
                    {
                        jsonString.Append(strValue + ",");
                    }
                    else
                    {
                        jsonString.Append(strValue);
                    }
                }
                jsonString.Append("},");
            }
            jsonString.Remove(jsonString.Length - 1, 1);
            jsonString.Append("]");
            return jsonString.ToString();
        }

        /// <summary>
        /// DataTable转换为Json
        /// </summary>
        public static string ToJson(DataTable dt, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName;
            Json.Append("{\"" + jsonName + "\":[");
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    Json.Append("{");
                    for (int j = 0; j < dt.Columns.Count; j++)
                    {
                        Type type = dt.Rows[i][j].GetType();
                        Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type));
                        if (j < dt.Columns.Count - 1)
                        {
                            Json.Append(",");
                        }
                    }
                    Json.Append("}");
                    if (i < dt.Rows.Count - 1)
                    {
                        Json.Append(",");
                    }
                }
            }
            Json.Append("]}");
            return Json.ToString();
        }
        #endregion

        #region DataReader转换为Json
        /// <summary>
        /// DataReader转换为Json
        /// </summary>
        /// <param name="dataReader">DataReader对象</param>
        /// <returns>Json字符串</returns>
        public static string ToJson(DbDataReader dataReader)
        {
            StringBuilder jsonString = new StringBuilder();
            jsonString.Append("[");
            while (dataReader.Read())
            {
                jsonString.Append("{");
                for (int i = 0; i < dataReader.FieldCount; i++)
                {
                    Type type = dataReader.GetFieldType(i);
                    string strKey = dataReader.GetName(i);
                    string strValue = dataReader[i].ToString();
                    jsonString.Append("\"" + strKey + "\":");
                    strValue = StringFormat(strValue, type);
                    if (i < dataReader.FieldCount - 1)
                    {
                        jsonString.Append(strValue + ",");
                    }
                    else
                    {
                        jsonString.Append(strValue);
                    }
                }
                jsonString.Append("},");
            }
            dataReader.Close();
            jsonString.Remove(jsonString.Length - 1, 1);
            jsonString.Append("]");
            return jsonString.ToString();
        }
        #endregion
    }
}
时间： 2024-10-07 02:20:20

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using System; using System.Data; using System.Text; using System.Collections.Generic; using System.Reflection; using System.Data.Common; using System.Collections; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.IO; usi

Json帮助类以及如何使用

首先要添加引用System.Runtime.Serialization.public class JSONHelper { public static string Serialize<T>(T obj) { System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(obj.G

Json与类对象转换

Json在js,jquery中可以直接使用,比如下串: { "from":"en" ,"to":"zh" ,"trans_result": [ {"src":"today","dst":"\u4eca\u5929"} ] } 可以直接使用data.from即可获取到"en". 但是在c#中不可以.要获取值,有

Json工具类 - JsonUtils.java

Json工具类,提供Json与对象之间的转换. 源码如下:(点击下载 - JsonUtils.java . gson-2.2.4.jar ) import java.lang.reflect.Type; import java.util.Map; import com.google.gson.Gson; import com.google.gson.GsonBuilder; /** * Json工具类 * */ @SuppressWarnings("unchecked") public

Json工具类，实现了反射将整个Object转换为Json对象的功能，支持Hibernate的延迟加

package com.aherp.framework.util; import java.lang.reflect.Array;import java.lang.reflect.Method;import java.util.Collection;import java.util.Iterator;import java.util.Map; import org.json.JSONArray;import org.json.JSONException;import org.json.JSONO

C# JSON帮助类

using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Reflection; using System.Collections; using System.Data.Common; using System.Web.Script.Serialization; namespace BO.JSON { //JSON转换类 public class Conve