SugarChes
306 lines
12 KiB
C#
306 lines
12 KiB
C#
/******************************
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* 说明：Json相关操作
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* 创建人：龚宇超
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* 创建日期：2017-10-23
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* 修改人：
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* 修改日期：
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* 修改备注：
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* 版本：1.0.0.0
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******************************/
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Data;
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using System.Web.Script.Serialization;
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using System.Collections;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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namespace Lskj.Util
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{
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/// <summary>
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/// Json 相关操作
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/// </summary>
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public static class JsonUtil
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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 ToComplexTable(string json)
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{
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DataTable dataTable = new DataTable(); //实例化
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DataTable result;
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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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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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result = dataTable;
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return result;
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}
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//Columns
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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 (current != "data")
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dataTable.Columns.Add(current, dictionary[current].GetType());
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else
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{
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ArrayList list = dictionary[current] as ArrayList;
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foreach (Dictionary<string, object> dic in list)
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{
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foreach (string key in dic.Keys)
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{
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dataTable.Columns.Add(key, dic[key].GetType());
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}
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break;
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}
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}
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}
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}
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//Rows
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string root = "";
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foreach (string current in dictionary.Keys)
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{
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if (current != "data")
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root = current;
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else
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{
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ArrayList list = dictionary[current] as ArrayList;
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foreach (Dictionary<string, object> dic in list)
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{
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DataRow dataRow = dataTable.NewRow();
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dataRow[root] = dictionary[root];
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foreach (string key in dic.Keys)
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{
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dataRow[key] = dic[key];
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}
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dataTable.Rows.Add(dataRow);
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}
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}
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}
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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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result = dataTable;
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return result;
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}
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/// <summary>
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/// <para>说明：json 字符串转换为DataTable</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-10-23 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="json">The json.</param>
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/// <returns>DataTable.</returns>
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public static DataTable ToDataTable(this string json)
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{
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int interception = json.LastIndexOf(']');
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json = json.Substring(0, interception + 1);
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DataTable dataTable = new DataTable(); //实例化
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DataTable result;
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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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if (arrayList != null && 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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result = dataTable;
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return result;
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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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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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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 (Exception ex)
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{
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}
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result = dataTable;
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return result;
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}
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/// <summary>
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/// <para>说明：将可能包含对象或数组字段的网页行 JSON 转换为 DataTable</para>
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/// <para>复杂字段所在列统一保留为字符串，纯标量列保持现有类型推断</para>
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/// </summary>
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/// <param name="json">顶层对象或对象数组 JSON</param>
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/// <returns>DataTable.</returns>
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public static DataTable ToDataTablePreservingComplexValues(string json)
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{
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if (string.IsNullOrWhiteSpace(json))
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{
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throw new ArgumentException("网页行 JSON 不能为空。", "json");
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}
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JToken root = JToken.Parse(json);
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JArray rows;
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if (root.Type == JTokenType.Array)
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{
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rows = (JArray)root;
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}
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else if (root.Type == JTokenType.Object)
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{
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rows = new JArray(root);
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}
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else
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{
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throw new JsonSerializationException("网页行 JSON 的顶层必须是对象或对象数组。");
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}
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HashSet<string> complexColumns = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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foreach (JToken rowToken in rows)
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{
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if (rowToken.Type != JTokenType.Object)
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{
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throw new JsonSerializationException("网页行 JSON 数组中的每一项都必须是对象。");
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}
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foreach (JProperty property in ((JObject)rowToken).Properties())
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{
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if (property.Value.Type == JTokenType.Object || property.Value.Type == JTokenType.Array)
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{
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complexColumns.Add(property.Name);
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}
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}
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}
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foreach (JObject row in rows.Children<JObject>())
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{
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foreach (JProperty property in row.Properties().ToList())
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{
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if (!complexColumns.Contains(property.Name)
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|| property.Value.Type == JTokenType.Null
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|| property.Value.Type == JTokenType.Undefined)
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{
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continue;
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}
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string text;
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if (property.Value.Type == JTokenType.Object || property.Value.Type == JTokenType.Array)
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{
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text = property.Value.ToString(Formatting.None);
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}
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else if (property.Value.Type == JTokenType.String)
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{
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text = property.Value.Value<string>();
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}
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else
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{
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JValue scalar = property.Value as JValue;
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text = scalar == null || scalar.Value == null
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? null
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: Convert.ToString(scalar.Value, CultureInfo.InvariantCulture);
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}
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property.Value = text == null ? JValue.CreateNull() : new JValue(text);
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}
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}
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return JsonConvert.DeserializeObject<DataTable>(rows.ToString(Formatting.None));
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}
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/// <summary>
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/// <para>说明：</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-10-23 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="json">The json.</param>
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/// <returns>DataRow.</returns>
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public static DataRow ToDataRow(this string json)
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{
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if (string.IsNullOrWhiteSpace(json)) return null;
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JObject rowObject = JsonConvert.DeserializeObject<JObject>(json);
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JArray jArray = new JArray();
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jArray.Add(rowObject);
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DataTable table = JsonConvert.DeserializeObject<DataTable>(JsonConvert.SerializeObject(jArray));
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return table != null && table.Rows.Count > 0 ? table.Rows[0] : null;
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}
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/// <summary>
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/// <para>说明：DataTable To JsonArray</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-10-23 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="dtTable">The dt table.</param>
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/// <returns>System.String.</returns>
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public static string ToJsonArray(this DataTable dtTable)
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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 = new ArrayList();
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foreach (DataRow dataRow in dtTable.Rows)
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{
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Dictionary<string, object> dictionary = new Dictionary<string, object>(); //实例化一个参数集合
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foreach (DataColumn dataColumn in dtTable.Columns)
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{
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dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName].ToStr());
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}
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arrayList.Add(dictionary); //ArrayList集合中添加键值
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}
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return javaScriptSerializer.Serialize(arrayList); //返回一个json字符串
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}
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/// <summary>
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/// <para>说明：DataRow To Json</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-10-23 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="row">The row.</param>
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/// <returns>System.String.</returns>
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public static string ToJsonObject(this DataRow row)
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{
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DataTable dataTable = row.Table.Clone();
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DataRow dataRow = dataTable.NewRow();
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dataRow.ItemArray = row.ItemArray;
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dataTable.Rows.Add(dataRow);
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JArray jArray = JsonConvert.DeserializeObject<JArray>(JsonConvert.SerializeObject(dataTable));
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return jArray[0] + "";
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}
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}
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}
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