583 lines
21 KiB
C#
583 lines
21 KiB
C#
using System;
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using System.Data;
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using System.Text;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Data.Common;
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using System.Collections;
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using System.IO;
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using System.Text.RegularExpressions;
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using System.Runtime.Serialization.Json;
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using System.Web.Script.Serialization;
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namespace DataUpdate
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{
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public class JsonHelper
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{
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/// <summary>
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/// List转成json
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="jsonName"></param>
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/// <param name="list"></param>
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/// <returns></returns>
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public static string ListToJson<T>(IList<T> list, string jsonName)
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{
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StringBuilder Json = new StringBuilder();
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if (string.IsNullOrEmpty(jsonName))
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jsonName = list[0].GetType().Name;
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Json.Append("{\"" + jsonName + "\":[");
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if (list.Count > 0)
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{
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for (int i = 0; i < list.Count; i++)
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{
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T obj = Activator.CreateInstance<T>();
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PropertyInfo[] pi = obj.GetType().GetProperties();
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Json.Append("{");
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for (int j = 0; j < pi.Length; j++)
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{
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Type type;
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object o = pi[j].GetValue(list[i], null);
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string v = string.Empty;
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if (o != null)
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{
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type = o.GetType();
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v = o.ToString();
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}
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else
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{
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type = typeof(string);
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}
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Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(v, type));
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if (j < pi.Length - 1)
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{
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Json.Append(",");
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}
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}
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Json.Append("}");
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if (i < list.Count - 1)
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{
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Json.Append(",");
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}
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}
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}
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Json.Append("]}");
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return Json.ToString();
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}
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/// <summary>
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/// 序列化集合对象
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/// </summary>
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public static string JsonSerializerByArrayData<T>(T[] tArray)
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{
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DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
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MemoryStream ms = new MemoryStream();
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ser.WriteObject(ms, tArray);
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string jsonString = Encoding.UTF8.GetString(ms.ToArray());
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ms.Close();
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string p = @"\\/Date\((\d+)\+\d+\)\\/";
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MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
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Regex reg = new Regex(p);
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jsonString = reg.Replace(jsonString, matchEvaluator);
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return jsonString;
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}
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/// <summary>
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/// 序列化单个对象
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/// </summary>
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public static string JsonSerializerBySingleData<T>(T t)
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{
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DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
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MemoryStream ms = new MemoryStream();
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ser.WriteObject(ms, t);
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string jsonString = Encoding.UTF8.GetString(ms.ToArray());
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ms.Close();
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string p = @"\\/Date\((\d+)\+\d+\)\\/";
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MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);
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Regex reg = new Regex(p);
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jsonString = reg.Replace(jsonString, matchEvaluator);
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return jsonString;
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}
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/// <summary>
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/// 反序列化单个对象
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/// </summary>
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public static T JsonDeserializeBySingleData<T>(string jsonString)
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{
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//将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"\/Date(1294499956278+0800)\/"格式
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string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
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MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
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Regex reg = new Regex(p);
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jsonString = reg.Replace(jsonString, matchEvaluator);
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DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
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MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
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T obj = (T)ser.ReadObject(ms);
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return obj;
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}
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/// <summary>
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/// 反序列化集合对象
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/// </summary>
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public static T[] JsonDeserializeByArrayData<T>(string jsonString)
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{
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//将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"\/Date(1294499956278+0800)\/"格式
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string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";
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MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);
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Regex reg = new Regex(p);
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jsonString = reg.Replace(jsonString, matchEvaluator);
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DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T[]));
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MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
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T[] arrayObj = (T[])ser.ReadObject(ms);
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return arrayObj;
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}
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/// <summary>
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/// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串
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/// </summary>
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private static string ConvertJsonDateToDateString(Match m)
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{
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string result = string.Empty;
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DateTime dt = new DateTime(1970, 1, 1);
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dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));
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dt = dt.ToLocalTime();
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result = dt.ToString("yyyy-MM-dd HH:mm:ss");
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return result;
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}
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/// <summary>
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/// 将时间字符串转为Json时间
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/// </summary>
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private static string ConvertDateStringToJsonDate(Match m)
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{
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string result = string.Empty;
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DateTime dt = DateTime.Parse(m.Groups[0].Value);
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dt = dt.ToUniversalTime();
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TimeSpan ts = dt - DateTime.Parse("1970-01-01");
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result = string.Format("\\/Date({0}+0800)\\/", ts.TotalMilliseconds);
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return result;
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}
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/// <summary>
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/// List转成json
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="list"></param>
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/// <returns></returns>
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public static string ListToJson<T>(IList<T> list)
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{
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object obj = list[0];
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return ListToJson<T>(list, obj.GetType().Name);
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}
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/// <summary>
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/// 对象转换为Json字符串
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/// </summary>
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/// <param name="jsonObject">对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(object jsonObject)
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{
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try
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{
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StringBuilder jsonString = new StringBuilder();
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jsonString.Append("{");
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PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
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for (int i = 0; i < propertyInfo.Length; i++)
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{
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object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
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if (objectValue == null)
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{
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continue;
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}
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StringBuilder value = new StringBuilder();
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if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
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{
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value.Append("\"" + objectValue.ToString() + "\"");
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}
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else if (objectValue is string)
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{
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value.Append("\"" + objectValue.ToString() + "\"");
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}
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else if (objectValue is IEnumerable)
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{
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value.Append(ToJson((IEnumerable)objectValue));
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}
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else
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{
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value.Append("\"" + objectValue.ToString() + "\"");
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}
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jsonString.Append("\"" + propertyInfo[i].Name + "\":" + value + ","); ;
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}
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return jsonString.ToString().TrimEnd(',') + "}";
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 对象集合转换Json
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/// </summary>
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/// <param name="array">集合对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(IEnumerable array)
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{
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string jsonString = "[";
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foreach (object item in array)
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{
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jsonString += ToJson(item) + ",";
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}
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if (jsonString.Length > 1)
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{
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jsonString.Remove(jsonString.Length - 1, jsonString.Length);
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}
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else
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{
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jsonString = "[]";
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}
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return jsonString + "]";
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}
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/// <summary>
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/// 普通集合转换Json
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/// </summary>
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/// <param name="array">集合对象</param>
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/// <returns>Json字符串</returns>
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public static string ToArrayString(IEnumerable array)
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{
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string jsonString = "[";
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foreach (object item in array)
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{
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jsonString = ToJson(item.ToString()) + ",";
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}
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jsonString.Remove(jsonString.Length - 1, jsonString.Length);
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return jsonString + "]";
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}
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/// <summary>
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/// Datatable转换为Json
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/// </summary>
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/// <param name="table">Datatable对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(DataTable dt)
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{
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StringBuilder jsonString = new StringBuilder();
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jsonString.Append("[");
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DataRowCollection drc = dt.Rows;
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for (int i = 0; i < drc.Count; i++)
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{
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jsonString.Append("{");
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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string strKey = dt.Columns[j].ColumnName;
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string strValue = drc[i][j].ToString();
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Type type = dt.Columns[j].DataType;
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jsonString.Append("\"" + strKey + "\":");
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strValue = StringFormat(strValue, type);
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if (j < dt.Columns.Count - 1)
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{
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jsonString.Append(strValue + ",");
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}
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else
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{
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jsonString.Append(strValue);
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}
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}
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jsonString.Append("},");
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}
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jsonString.Remove(jsonString.Length - 1, 1);
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jsonString.Append("]");
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if (jsonString.Length == 1)
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{
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return "[]";
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}
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return jsonString.ToString();
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}
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/// <summary>
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/// DataTable转成Json
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/// </summary>
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/// <param name="jsonName"></param>
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/// <param name="dt"></param>
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/// <returns></returns>
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public static string ToJson(DataTable dt, string jsonName)
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{
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StringBuilder Json = new StringBuilder();
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if (string.IsNullOrEmpty(jsonName))
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jsonName = dt.TableName;
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Json.Append("{\"" + jsonName + "\":[");
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if (dt.Rows.Count > 0)
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{
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for (int i = 0; i < dt.Rows.Count; i++)
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{
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Json.Append("{");
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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Type type = dt.Rows[i][j].GetType();
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Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j] is DBNull ? string.Empty : dt.Rows[i][j].ToString(), type));
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if (j < dt.Columns.Count - 1)
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{
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Json.Append(",");
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}
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}
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Json.Append("}");
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if (i < dt.Rows.Count - 1)
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{
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Json.Append(",");
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}
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}
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}
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Json.Append("]}");
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return Json.ToString();
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}
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/// <summary>
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/// DataReader转换为Json
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/// </summary>
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/// <param name="dataReader">DataReader对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(IDataReader dataReader)
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{
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try
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{
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StringBuilder jsonString = new StringBuilder();
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jsonString.Append("[");
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while (dataReader.Read())
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{
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jsonString.Append("{");
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for (int i = 0; i < dataReader.FieldCount; i++)
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{
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Type type = dataReader.GetFieldType(i);
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string strKey = dataReader.GetName(i);
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string strValue = dataReader[i].ToString();
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jsonString.Append("\"" + strKey + "\":");
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strValue = StringFormat(strValue, type);
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if (i < dataReader.FieldCount - 1)
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{
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jsonString.Append(strValue + ",");
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}
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else
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{
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jsonString.Append(strValue);
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}
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}
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||
jsonString.Append("},");
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}
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if (!dataReader.IsClosed)
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{
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dataReader.Close();
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}
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jsonString.Remove(jsonString.Length - 1, 1);
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jsonString.Append("]");
|
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if (jsonString.Length == 1)
|
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{
|
||
return "[]";
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}
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||
return jsonString.ToString();
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||
}
|
||
catch (Exception ex)
|
||
{
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||
throw ex;
|
||
}
|
||
}
|
||
|
||
/// <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 = "{";
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||
foreach (DataTable table in dataSet.Tables)
|
||
{
|
||
jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
|
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}
|
||
jsonString = jsonString.TrimEnd(',');
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return jsonString + "}";
|
||
}
|
||
/// <summary>
|
||
/// Json 字符串 转换为 DataTable数据集合
|
||
/// </summary>
|
||
/// <param name="json"></param>
|
||
/// <returns></returns>
|
||
public static DataTable ToDataTable(string json)
|
||
{
|
||
DataTable dataTable = new DataTable(); //实例化
|
||
DataTable result;
|
||
try
|
||
{
|
||
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
|
||
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大数值
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||
ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
|
||
if (arrayList.Count > 0)
|
||
{
|
||
foreach (Dictionary<string, object> dictionary in arrayList)
|
||
{
|
||
if (dictionary.Keys.Count == 0)
|
||
{
|
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result = dataTable;
|
||
return result;
|
||
}
|
||
//Columns
|
||
if (dataTable.Columns.Count == 0)
|
||
{
|
||
foreach (string current in dictionary.Keys)
|
||
{
|
||
dataTable.Columns.Add(current, dictionary[current].GetType());
|
||
}
|
||
}
|
||
//Rows
|
||
DataRow dataRow = dataTable.NewRow();
|
||
foreach (string current in dictionary.Keys)
|
||
{
|
||
dataRow[current] = dictionary[current];
|
||
}
|
||
dataTable.Rows.Add(dataRow); //循环添加行到DataTable中
|
||
}
|
||
}
|
||
}
|
||
catch
|
||
{
|
||
}
|
||
result = dataTable;
|
||
return result;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 根据Json返回DateTable,JSON数据格式如:
|
||
/// {table:[{column1:1,column2:2,column3:3},{column1:1,column2:2,column3:3}]}
|
||
/// items:{"2750884":{clicknum:"50",title:"鲍鱼",href:"/shop/E06B14B40110/dish/2750884#menu",desc:"<br/>",src:"15f38721-49da-48f0-a283-8057c621b472.jpg",price:78.00,units:"",list:[],joiner:""}}
|
||
/// </summary>
|
||
/// <param name="strJson">Json字符串</param>
|
||
/// <returns></returns>
|
||
public static DataTable JsonToDataTable(string strJson)
|
||
{
|
||
//取出表名
|
||
//var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
|
||
var rg = new Regex(@"([^:])+(?=:\{)", RegexOptions.IgnoreCase);
|
||
string strName = rg.Match(strJson).Value;
|
||
DataTable tb = null;
|
||
//去除表名
|
||
strJson = strJson.Substring(strJson.IndexOf("[") + 1);
|
||
strJson = strJson.Substring(0, strJson.IndexOf("]"));
|
||
|
||
//获取数据
|
||
//rg = new Regex(@"(?<={)[^}]+(?=})");
|
||
rg = new Regex(@"(?<={)[^}]+(?=})");
|
||
|
||
System.Text.RegularExpressions.MatchCollection mc = rg.Matches(strJson);
|
||
for (int i = 0; i < mc.Count; i++)
|
||
{
|
||
string strRow = mc[i].Value;
|
||
string[] strRows = strRow.Split(',');
|
||
|
||
//创建表
|
||
if (tb == null)
|
||
{
|
||
tb = new DataTable();
|
||
tb.TableName = strName;
|
||
foreach (string str in strRows)
|
||
{
|
||
var dc = new DataColumn();
|
||
string[] strCell = str.Split(':');
|
||
dc.ColumnName = strCell[0].Replace("\"", "");
|
||
tb.Columns.Add(dc);
|
||
}
|
||
tb.AcceptChanges();
|
||
}
|
||
|
||
//增加内容
|
||
DataRow dr = tb.NewRow();
|
||
for (int r = 0; r < strRows.Length; r++)
|
||
{
|
||
//dr[r] = strRows[r].Split(':')[1].Trim().Replace("，", ",").Replace("：", ":").Replace("\"", "");
|
||
string[] strCell = strRows[r].Split(':');
|
||
dr[strCell[0].Replace("\"", "")] = strCell[1].Replace("\"", "");
|
||
}
|
||
tb.Rows.Add(dr);
|
||
tb.AcceptChanges();
|
||
}
|
||
|
||
return tb;
|
||
}
|
||
/// <summary>
|
||
/// 过滤特殊字符
|
||
/// </summary>
|
||
/// <param name="s"></param>
|
||
/// <returns></returns>
|
||
public 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;
|
||
case '\v':
|
||
sb.Append("\\v"); break;
|
||
case '\0':
|
||
sb.Append("\\0"); break;
|
||
default:
|
||
sb.Append(c); break;
|
||
}
|
||
}
|
||
return sb.ToString();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 格式化字符型、日期型、布尔型
|
||
/// </summary>
|
||
/// <param name="str"></param>
|
||
/// <param name="type"></param>
|
||
/// <returns></returns>
|
||
private static string StringFormat(string str, Type type)
|
||
{
|
||
if (type != typeof(string) && string.IsNullOrEmpty(str))
|
||
{
|
||
str = "\"" + str + "\"";
|
||
}
|
||
else 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(byte[]))
|
||
{
|
||
str = "\"" + str + "\"";
|
||
}
|
||
else if (type == typeof(Guid))
|
||
{
|
||
str = "\"" + str + "\"";
|
||
}
|
||
return str;
|
||
}
|
||
}
|
||
} |