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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Reflection;
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using System.Collections;
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using System.Data;
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using System.Data.Common;
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using System.IO;
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using System.Runtime.Serialization.Json;
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using BP.DA;
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using System.Web;
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using Newtonsoft.Json;
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namespace BP.Tools
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{
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/// <summary>
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/// Summary description for FormatToJson
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/// </summary>
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public class FormatToJson
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{
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#region Json 字符串 转换为 DataTable数据集合
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/// <summary>
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/// 将JSON解析成DataSet只限标准的JSON数据
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/// 例如：Json＝{t1:[{name:'数据name',type:'数据type'}]} 或 Json＝{t1:[{name:'数据name',type:'数据type'}],t2:[{id:'数据id',gx:'数据gx',val:'数据val'}]}
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/// </summary>
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/// <param name="Json">Json字符串</param>
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/// <returns>DataSet</returns>
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public static DataSet JsonToDataSet(string Json)
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{
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try
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{
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DataSet ds = new DataSet();
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//JavaScriptSerializer Serializer = new JavaScriptSerializer();
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//object objs = Serializer.Deserialize(Json);
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//2019/7/24 zyt改造JavaScriptSerializer To JsonConvert,Core And Fram4编译正常
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object obj = JsonConvert.DeserializeObject(Json);
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Dictionary<string, object> datajson = (Dictionary<string, object>)obj;
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foreach (var item in datajson)
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{
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DataTable dt = new DataTable(item.Key);
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object[] rows = (object[])item.Value;
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foreach (var row in rows)
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{
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Dictionary<string, object> val = (Dictionary<string, object>)row;
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DataRow dr = dt.NewRow();
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foreach (KeyValuePair<string, object> sss in val)
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{
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if (!dt.Columns.Contains(sss.Key))
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{
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dt.Columns.Add(sss.Key);
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dr[sss.Key] = sss.Value;
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}
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else
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dr[sss.Key] = sss.Value;
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}
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dt.Rows.Add(dr);
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}
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ds.Tables.Add(dt);
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}
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return ds;
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}
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catch
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{
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return null;
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}
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}
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//反实例化json
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public static T ParseFromJson<T>(string szJson)
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{
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using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
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{
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DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
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return (T)serializer.ReadObject(ms);
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}
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}
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//反实例化json
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public static List<T> ParseListFromJson<T>(string szJson)
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{
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//JavaScriptSerializer Serializer = new JavaScriptSerializer();
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//List<T> objs = Serializer.Deserialize<List<T>>(szJson);
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//2019/7/24 zyt改造JavaScriptSerializer To JsonConvert,Core And Fram4编译正常
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List<T> objs =JsonConvert.DeserializeObject<List<T>>(szJson);
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return objs;
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}
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/// <summary>
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/// Json 字符串 转换为 DataTable数据集合
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/// </summary>
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/// <param name="json"></param>
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/// <returns></returns>
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public static DataTable ToDataTable(string json)
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{
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DataTable dataTable = new DataTable(); //实例化
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try
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{
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//JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
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//javascriptserializer.maxjsonlength = int32.maxvalue; //取得最大数值
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//ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
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//2019/7/24 zyt改造JavaScriptSerializer To JsonConvert,Core And Fram4编译正常
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ArrayList arrayList = JsonConvert.DeserializeObject<ArrayList>(json);
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if (arrayList.Count > 0)
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{
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foreach (Dictionary<string, object> dictionary in arrayList)
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{
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if (dictionary.Keys.Count<string>() == 0)
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{
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return dataTable;
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}
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if (dataTable.Columns.Count == 0)
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{
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foreach (string current in dictionary.Keys)
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{
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if (dictionary[current] == null)
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{
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dataTable.Columns.Add(current, typeof(string));
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continue;
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}
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dataTable.Columns.Add(current, dictionary[current].GetType());
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}
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}
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DataRow dataRow = dataTable.NewRow();
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foreach (string current in dictionary.Keys)
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{
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if (dictionary[current] == null)
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{
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dataTable.Columns[current].AllowDBNull = true;
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dataRow[current] = DBNull.Value;
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continue;
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}
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dataRow[current] = dictionary[current];
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}
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dataTable.Rows.Add(dataRow); //循环添加行到DataTable中
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}
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}
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}
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catch
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{
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}
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return dataTable;
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}
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#endregion
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public FormatToJson()
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{
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//
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// TODO: Add constructor logic here
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//
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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 (DataType.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 = pi[j].GetValue(list[i], null).GetType();
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Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), 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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/// 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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/// 将实体类转为Json
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="obj"></param>
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/// <returns></returns>
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public static string ParseJsonFromEntity<T>(T obj)
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{
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//将对象序列化json
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DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
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using (MemoryStream ms = new MemoryStream())
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{
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//将json字符串写入内存流中
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serializer.WriteObject(ms, obj);
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string szJson = Encoding.UTF8.GetString(ms.ToArray());
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return szJson;
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}
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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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string jsonString = "{";
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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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string value = string.Empty;
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if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
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{
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value = "'" + objectValue.ToString() + "'";
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}
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else if (objectValue is string)
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{
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value = "'" + ToJson(objectValue.ToString()) + "'";
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}
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else if (objectValue is IEnumerable)
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{
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value = ToJson((IEnumerable)objectValue);
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}
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else
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{
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if (objectValue == null)
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value = "";
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else
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value = ToJson(objectValue.ToString());
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}
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jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";
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}
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jsonString = jsonString.Substring(0, jsonString.Length - 1);
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return jsonString + "}";
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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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jsonString = jsonString.Substring(0, jsonString.Length - 1);
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return jsonString + "]";
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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_FromDictionary(IDictionary<string, object> array)
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{
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StringBuilder jsonString = new StringBuilder();
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jsonString.Append("{");
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foreach (string key in array.Keys)
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{
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object objectValue = array[key];
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if (objectValue is string)
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{
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jsonString.AppendFormat("\"{0}\":\"{1}\",", key, objectValue.ToString());
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}
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else if (objectValue is List<string>)
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{
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List<string> list = objectValue as List<string>;
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jsonString.Append("\"" + key + "\":[");
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foreach (string item in list)
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{
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jsonString.Append(item + ",");
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}
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if (list != null && list.Count > 0)
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jsonString.Remove(jsonString.Length - 1, 1);
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jsonString.Append("],");
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}
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else
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{
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jsonString.AppendFormat("\"{0}\":\"{1}\",", key, objectValue.ToString());
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}
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}
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if (jsonString.Length > 1)
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jsonString.Remove(jsonString.Length - 1, 1);
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jsonString.Append("}");
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return jsonString.ToString();
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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, bool isUpper = true)
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{
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StringBuilder jsonString = new StringBuilder();
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if (dt.Rows.Count == 0)
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{
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jsonString.Append("[]");
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return jsonString.ToString();
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}
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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 = null;
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if (isUpper == true)
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strKey = dt.Columns[j].ColumnName.ToUpper();
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else
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strKey = dt.Columns[j].ColumnName;
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string strValue = drc[i][j] == null ? "" : 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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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 (DataType.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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string column = dt.Columns[j].ColumnName.ToString();
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string val = dt.Rows[i][j] == null ? "" : dt.Rows[i][j].ToString();
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val = StringFormat(val, type);
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Json.Append("\"" + column + "\":" + val);
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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(DbDataReader dataReader)
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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] == null ? "" : 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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dataReader.Close();
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jsonString.Remove(jsonString.Length - 1, 1);
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jsonString.Append("]");
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return jsonString.ToString();
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}
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|
|
/// <summary>
|
|
|
/// DataSet转换为Json 都是大写的列.
|
|
|
/// </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.ToUpper() + "\":" + ToJson(table) + ",";
|
|
|
}
|
|
|
jsonString = jsonString.TrimEnd(',');
|
|
|
return jsonString + "}";
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 把dataset转成json 列名大写.
|
|
|
/// </summary>
|
|
|
/// <param name="dataSet"></param>
|
|
|
/// <returns>json字串.</returns>
|
|
|
public static string DataSetToJsonUpper(DataSet dataSet)
|
|
|
{
|
|
|
return ToJson(dataSet);
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 过滤特殊字符
|
|
|
/// </summary>
|
|
|
/// <param name="s"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string String2Json(String s)
|
|
|
{
|
|
|
System.Text.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>
|
|
|
/// <param name="str"></param>
|
|
|
/// <param name="type"></param>
|
|
|
/// <returns></returns>
|
|
|
private static string StringFormat(string str, Type type)
|
|
|
{
|
|
|
if (type == typeof(string))
|
|
|
{
|
|
|
str = String2Json(str);
|
|
|
str = "\"" + str + "\"";
|
|
|
}
|
|
|
else if (type == typeof(DateTime))
|
|
|
{
|
|
|
str = "\"" + Convert.ToDateTime(str).ToShortDateString() + "\"";
|
|
|
}
|
|
|
else if (type == typeof(bool))
|
|
|
{
|
|
|
str = str.ToLower();
|
|
|
}
|
|
|
else if (type == typeof(System.Byte[]))
|
|
|
{
|
|
|
//数字字段需转string后进行拼接
|
|
|
str = "\"" + str + "\"";
|
|
|
}
|
|
|
if (str.Length == 0)
|
|
|
str = "\"\"";
|
|
|
|
|
|
return str;
|
|
|
}
|
|
|
}
|
|
|
} |