using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Web.Script.Serialization;
namespace WebQiXingCai.Common
{
/// <summary>
/// JSON转换类
/// </summary>
public class ConvertJson
{
#region 私有方法
/// <summary>
/// 过滤特殊字符
/// </summary>
private static string String2Json(String s)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.Length; i++)
{
char c = s.ToCharArray()[i];
switch (c)
{
case '\"':
sb.Append("\\\""); break;
case '\\':
sb.Append("\\\\"); break;
case '/':
sb.Append("\\/"); break;
case '\b':
sb.Append("\\b"); break;
case '\f':
sb.Append("\\f"); break;
case '\n':
sb.Append("\\n"); break;
case '\r':
sb.Append("\\r"); break;
case '\t':
sb.Append("\\t"); break;
default:
sb.Append(c); break;
}
}
return sb.ToString();
}
/// <summary>
/// 格式化字符型、日期型、布尔型
/// </summary>
private static string StringFormat(string str, Type type)
{
if (type == typeof(string))
{
str = String2Json(str);
str = "\"" + str + "\"";
}
else if (type == typeof(DateTime))
{
str = "\"" + str + "\"";
}
else if (type == typeof(bool))
{
str = str.ToLower();
}
else if (type != typeof(string) && string.IsNullOrEmpty(str))
{
str = "\"" + str + "\"";
}
return str;
}
#endregion
#region List转换成Json
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<T>(IList<T> list)
{
object obj = list[0];
return ListToJson<T>(list, obj.GetType().Name);
}
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<T>(IList<T> list, string jsonName)
{
StringBuilder Json = new StringBuilder();
if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;
Json.Append("{\"" + jsonName + "\":[");
if (list.Count > 0)
{
for (int i = 0; i < list.Count; i++)
{
T obj = Activator.CreateInstance<T>();
PropertyInfo[] pi = obj.GetType().GetProperties();
Json.Append("{");
for (int j = 0; j < pi.Length; j++)
{
if (pi[j].GetValue(list[i], null) == null)
{
Json.Append("\"" + pi[j].Name.ToString() + "\":null");
}
else
{
Type type = pi[j].GetValue(list[i], null).GetType();
Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type));
}
if (j < pi.Length - 1)
{
Json.Append(",");
}
}
Json.Append("}");
if (i < list.Count - 1)
{
Json.Append(",");
}
}
}
Json.Append("]}");
return Json.ToString();
}
#endregion
#region 对象转换为Json
/// <summary>
/// 对象转换为Json
/// </summary>
/// <param name="jsonObject">对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(object jsonObject)
{
string jsonString = "{";
PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
for (int i = 0; i < propertyInfo.Length; i++)
{
object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);
string value = string.Empty;
if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)
{
value = "'" + objectValue.ToString() + "'";
}
else if (objectValue is string)
{
value = "'" + ToJson(objectValue.ToString()) + "'";
}
else if (objectValue is IEnumerable)
{
value = ToJson((IEnumerable)objectValue);
}
else
{
value = ToJson(objectValue.ToString());
}
jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "}";
}
#endregion
#region 对象集合转换Json
/// <summary>
/// 对象集合转换Json
/// </summary>
/// <param name="array">集合对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(IEnumerable array)
{
string jsonString = "[";
foreach (object item in array)
{
jsonString += ToJson(item) + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "]";
}
#endregion
#region 普通集合转换Json
/// <summary>
/// 普通集合转换Json
/// </summary>
/// <param name="array">集合对象</param>
/// <returns>Json字符串</returns>
public static string ToArrayString(IEnumerable array)
{
string jsonString = "[";
foreach (object item in array)
{
jsonString = ToJson(item.ToString()) + ",";
}
jsonString.Remove(jsonString.Length - 1, jsonString.Length);
return jsonString + "]";
}
#endregion
#region DataSet转换为Json
/// <summary>
/// DataSet转换为Json
/// </summary>
/// <param name="dataSet">DataSet对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DataSet dataSet)
{
if (dataSet.Tables[0].Rows.Count > 0)
{
string jsonString = "{";
foreach (DataTable table in dataSet.Tables)
{
jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
}
jsonString = jsonString.TrimEnd(',');
return jsonString + "}";
}
else
{
return "[]";
}
}
/// <summary>
/// DataSet转换为标准Json
/// </summary>
/// <param name="dataSet">DataSet对象</param>
/// <returns>Json字符串</returns>
public static string ToStandardJson(DataSet dataSet)
{
if (dataSet.Tables[0].Rows.Count > 0)
{
string jsonString = "";
foreach (DataTable table in dataSet.Tables)
{
jsonString += ToJson(table) + ",";
}
jsonString = jsonString.TrimEnd(',');
return jsonString;
}
else
{
return "[]";
}
}
#endregion
#region Datatable转换为Json
/// <summary>
/// Datatable转换为Json
/// </summary>
/// <param name="table">Datatable对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DataTable dt)
{
if (dt.Rows.Count == 0)
{
return "[]";
}
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
DataRowCollection drc = dt.Rows;
for (int i = 0; i < drc.Count; i++)
{
jsonString.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
string strKey = dt.Columns[j].ColumnName;
string strValue = drc[i][j].ToString();
Type type = dt.Columns[j].DataType;
jsonString.Append("\"" + strKey + "\":");
strValue = StringFormat(strValue, type);
if (j < dt.Columns.Count - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
/// <summary>
/// DataTable转换为Json
/// </summary>
public static string ToJson(DataTable dt, string jsonName)
{
StringBuilder Json = new StringBuilder();
if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName;
Json.Append("{\"" + jsonName + "\":[");
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
Json.Append("{");
for (int j = 0; j < dt.Columns.Count; j++)
{
Type type = dt.Rows[i][j].GetType();
Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type));
if (j < dt.Columns.Count - 1)
{
Json.Append(",");
}
}
Json.Append("}");
if (i < dt.Rows.Count - 1)
{
Json.Append(",");
}
}
}
Json.Append("]}");
return Json.ToString();
}
#endregion
#region DataReader转换为Json
/// <summary>
/// DataReader转换为Json
/// </summary>
/// <param name="dataReader">DataReader对象</param>
/// <returns>Json字符串</returns>
public static string ToJson(DbDataReader dataReader)
{
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
while (dataReader.Read())
{
jsonString.Append("{");
for (int i = 0; i < dataReader.FieldCount; i++)
{
Type type = dataReader.GetFieldType(i);
string strKey = dataReader.GetName(i);
string strValue = dataReader[i].ToString();
jsonString.Append("\"" + strKey + "\":");
strValue = StringFormat(strValue, type);
if (i < dataReader.FieldCount - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
dataReader.Close();
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
#endregion
#region 数据表转字典
/// <summary>
/// 表转Dictionary字典
/// </summary>
public static Dictionary<string, object> ToDic(DataTable dt)
{
Dictionary<string, object> dic = new Dictionary<string, object>();
DataRowCollection drc = dt.Rows;
for (int i = 0; i < drc.Count; i++)
{
for (int j = 0; j < dt.Columns.Count; j++)
{
string strKey = dt.Columns[j].ColumnName + "[" + i + "]";
string strValue = drc[i][j].ToString();
dic.Add(strKey, strValue);
}
}
return dic;
}
#endregion
#region Dictionary字典与json互转
/// <summary>
/// Dictionary字典转json
/// </summary>
/// <param name="dic"></param>
/// <returns></returns>
public static string ToJson(Dictionary<string, object> dic)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
string json = (jss).Serialize(dic);
return json;
}
/// <summary>
/// json转Dictionary字典
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
public static Dictionary<string, object> ToDic(string json)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
Dictionary<string, object> dic = jss.Deserialize<Dictionary<string, object>>(json);
return dic;
}
#endregion
#region DataTable转json二维数组
/// <summary>
/// DataSet转json二维数组
/// </summary>
/// <param name="dataSet"></param>
/// <returns></returns>
public static string ToArrJson(DataSet dataSet)
{
string jsonString = "";
foreach (DataTable table in dataSet.Tables)
{
jsonString += ToArrJson(table) + ",";
}
jsonString = jsonString.TrimEnd(',');
return jsonString;
}
/// <summary>
/// DataTable转json二维数组
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static string ToArrJson(DataTable dt)
{
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
DataRowCollection drc = dt.Rows;
for (int i = 0; i < drc.Count; i++)
{
jsonString.Append("[");
for (int j = 0; j < dt.Columns.Count; j++)
{
//string strKey = dt.Columns[j].ColumnName;
string strValue = drc[i][j].ToString();
Type type = dt.Columns[j].DataType;
//jsonString.Append("\"" + strKey + "\":");
strValue = StringFormat(strValue, type);
if (j < dt.Columns.Count)
{
jsonString.Append(strValue + ",");
}
if (j == dt.Columns.Count - 1)
{
jsonString.Remove(jsonString.Length - 1, 1);
}
}
jsonString.Append("],");
}
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
#endregion
#region Json转换别的类型
/// <summary>
/// 将json转换为DataTable
/// </summary>
/// <param name="strJson">得到的json</param>
/// <returns></returns>
public static DataTable JsonToDataTable(string strJson)
{
//转换json格式
strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();
//取出表名
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(@"(?<={)[^}]+(?=})");
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('#');
if (strCell[0].Substring(0, 1) == "\"")
{
int a = strCell[0].Length;
dc.ColumnName = strCell[0].Substring(1, a - 2);
}
else
{
dc.ColumnName = strCell[0];
}
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("\"", "");
}
tb.Rows.Add(dr);
tb.AcceptChanges();
}
return tb;
}
/// <summary>
/// json数组转换为ArrayList
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
public static List<ArrayList> JsonToArrayList(string json)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
List<ArrayList> arr = jss.Deserialize<List<ArrayList>>(json);
return arr;
}
/// <summary>
/// ArrayList转换为json数组
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
public static string ArrayListToJson(List<ArrayList> arr)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
string json = jss.Serialize(arr);
return json;
}
///// <summary>
///// 将json数组转换为DataTable
///// </summary>
///// <param name="json">得到的json</param>
///// <param name="ColumnNumber">几列</param>
///// <param name="dtName">表名</param>
///// <returns></returns>
//public static DataTable JsonArrToDataTable(string json, int ColumnNumber, string dtName = "dtarr")
//{
// JavaScriptSerializer jss = new JavaScriptSerializer();
// List<ArrayList> arr = jss.Deserialize<List<ArrayList>>(json);
// DataTable tb = new DataTable();
// tb.TableName = dtName;
// DataColumn dc = null;
// for (int r = 0; r < 1; r++)
// {
// dc = new DataColumn();
// dc.ColumnName = arr[i][r].ToString();
// }
// tb.Columns.Add(dc);
// for (int i = 0; i < arr.Count; i++)
// {
// DataRow dr = tb.NewRow();
// tb.Rows.Add(dr);
// tb.AcceptChanges();
// }
// return tb;
//}
#endregion
#region json扩展信息
/// <summary>
/// <para>json扩展对象</para>
/// <para>此方法必须调用ToJson方法生成的json才可以，就是与ToJson方法配合使用</para>
/// <para>调用ToJsonExtended(json, "test", "{\"msg\":\"测试消息\"}");</para>
/// <para>生成后的json比如： {"ds":[{"p_Id":3,"p_Code":"QHO50S","p_Name":"前海油"}],"test":{"msg":"测试消息"}}</para>
/// </summary>
/// <param name="json">原json字符串</param>
/// <param name="Name">扩展json对象名</param>
/// <param name="jsonobj">扩展json对象</param>
/// <returns>返回json字符串</returns>
public static string ToJsonExtended(string json, string Name, string jsonobj)
{
json = json.Insert(json.Length - 1, ",\"" + Name + "\":" + jsonobj);
return json;
}
/// <summary>
/// <para>此方法通用无需配合其他方法，最好与ToStandardJson配合方法使用</para>
/// <para>如与ToJson方法一起使用会出现{"ds":{"ds":[{}]}}多层对象</para>
/// <para>调用ToStandardJsonExtended(json, "test", "{\"msg\":\"测试消息\"}");</para>
/// <para>如需多个json调用ToStandardJsonExtended(json, "test", "{\"msg\":\"测试消息\"}, \"test2\": {\"msg2\": \"测试消息2\"}");</para>
/// </summary>
/// <param name="json">原json</param>
/// <param name="Name">扩展json名</param>
/// <param name="jsonobj">扩展json对象</param>
/// <returns></returns>
public static string ToStandardJsonExtended(string json, string Name, string jsonobj)
{
json = json.Insert(0, "{\"ds\":");
json = json.Insert(json.Length, ",\"" + Name + "\":" + jsonobj + "}");
return json;
}
#endregion
}
}
