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328
tongxin/NetWorkHelper/ITool/JsonManager.cs
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328
tongxin/NetWorkHelper/ITool/JsonManager.cs
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/********************************************************************
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* *
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* * Copyright (C) 2013-2018 uiskin.cn
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* * 作者： BinGoo QQ：315567586
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* * 请尊重作者劳动成果，请保留以上作者信息，禁止用于商业活动。
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* *
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* * 创建时间：2017-09-18
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* * 说明：JSON操作类
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* *
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********************************************************************/
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.Common;
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using System.Reflection;
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using System.Text;
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namespace NetWorkHelper.ITool
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{
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public class JsonManager
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{
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/// <summary>
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/// 过滤特殊字符
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/// </summary>
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private static string String2Json(string s)
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{
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < s.Length; i++)
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{
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char c = s.ToCharArray()[i];
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switch (c)
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{
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case '\"':
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sb.Append("\\\""); break;
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case '\\':
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sb.Append("\\\\"); break;
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case '/':
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sb.Append("\\/"); break;
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case '\b':
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sb.Append("\\b"); break;
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case '\f':
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sb.Append("\\f"); break;
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case '\n':
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sb.Append("\\n"); break;
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case '\r':
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sb.Append("\\r"); break;
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case '\t':
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sb.Append("\\t"); break;
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default:
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sb.Append(c); break;
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}
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}
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return sb.ToString();
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}
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/// <summary>
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/// 格式化字符型、日期型、布尔型
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/// </summary>
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private static string StringFormat(string str, Type type)
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{
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if (type == typeof(string))
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{
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str = String2Json(str);
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str = "\"" + str + "\"";
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}
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else if (type == typeof(DateTime))
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{
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str = "\"" + str + "\"";
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}
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else if (type == typeof(bool))
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{
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str = str.ToLower();
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}
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else if (type != typeof(string) && string.IsNullOrEmpty(str))
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{
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str = "\"" + str + "\"";
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}
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return str;
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}
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#region List转换成Json
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/// <summary>
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/// List转换成Json
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/// </summary>
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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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/// List转换成Json
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/// </summary>
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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)) 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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#endregion
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#region 对象转换为Json
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/// <summary>
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/// 对象转换为Json
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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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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.Remove(jsonString.Length - 1, jsonString.Length);
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return jsonString + "}";
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}
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#endregion
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#region 对象集合转换Json
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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.Remove(jsonString.Length - 1, jsonString.Length);
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return jsonString + "]";
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}
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#endregion
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#region 普通集合转换Json
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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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#endregion
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#region DataSet转换为Json
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/// <summary>
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/// DataSet转换为Json
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/// </summary>
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/// <param name="dataSet">DataSet对象</param>
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/// <returns>Json字符串</returns>
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public static string ToJson(DataSet dataSet)
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{
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string jsonString = "{";
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foreach (DataTable table in dataSet.Tables)
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{
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jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
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}
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jsonString = jsonString.TrimEnd(',');
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return jsonString + "}";
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}
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#endregion
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#region Datatable转换为Json
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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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return jsonString.ToString();
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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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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)) 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].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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#endregion
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#region DataReader转换为Json
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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].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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#endregion
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}
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}
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