分享一个C#通用的json操作类
json操作类，支持json格式的字符串常用操作，对象序列化为json字符串、json字符串转换为对象，DataTable转换为json字符串。支持将实体类转换成DataTable 。
源码如下：
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Web.Script.Serialization;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Reflection;
using System.IO;
///
///JsonTableHelper 的摘要说明
///
public static class JsonTableHelper
{
///
/// 返回对象序列化
///
/// 源对象
/// json数据
public static string ToJson(this object obj)
{
JavaScriptSerializer serialize = new JavaScriptSerializer();
return serialize.Serialize(obj);
}
///
/// 控制深度
///
/// 源对象
/// 深度
/// json数据
public static string ToJson(this object obj, int recursionDepth)
{
JavaScriptSerializer serialize = new JavaScriptSerializer();
serialize.RecursionLimit = recursionDepth;
return serialize.Serialize(obj);
}
///
/// DataTable转为json
///
/// DataTable
/// json数据
public static string ToJson(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 - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return jsonString.ToString();
}
///
/// 格式化字符型、日期型、布尔型
///
///
///
///
/// DataTable转为json,不带索引
///
/// DataTable
/// json数据
public static string ToJsonTotal(DataTable dt,int count)
{
StringBuilder sb = new StringBuilder();
sb.Append("{\"total\":"+count+",\"rows\":");
sb.Append(ToJsonp(dt));
sb.Append("}");
return sb.ToString();
}
///
/// 过滤特殊字符
///
///
///
/// DataTable转为json
///
/// DataTable
/// json数据
public static string ToJsonDrv(DataTable dt)
{
Dictionary dic = new Dictionary();
int index = 0;
foreach (DataRowView drv in dt.DefaultView)
{
Dictionary result = new Dictionary();
foreach (DataColumn dc in dt.Columns)
{
result.Add(dc.ColumnName, drv[dc.ColumnName].ToString());
}
dic.Add(index.ToString(), result);
index++;
}
return ToJson(dic);
}
///
/// DataTable转为jsonp,autocomplete插件需要使用的jsonp格式
///
/// DataTable
/// jsonp数据
public static string ToJsonp(DataTable dtResult)
{
if (dtResult == null)
{
return "";
}
StringBuilder jsonString = new StringBuilder();
string temp = "";
string value = "";
jsonString.Append("[");
foreach (DataRow dr in dtResult.Rows)
{
temp = "";
jsonString.Append("{");
foreach (DataColumn dc in dtResult.Columns)
{
value = dr[dc].ToString();
//if (value.Length < 1)
//{
// value = " ";
//}
temp += "\"" + dc.ColumnName + "\":\"" + value + "\",";
}
temp = temp.TrimEnd(',');
jsonString.Append(temp + "},");
}
temp = jsonString.ToString();
temp = temp.TrimEnd(',');
temp += "]";
return temp;
}
///
/// 将实体类转换成DataTable
///
/// (IList objlist)
{
if (objlist == null || objlist.Count <= 0)
{
return null;
}
DataTable dt = new DataTable(typeof(T).Name);
DataColumn column;
DataRow row;
System.Reflection.PropertyInfo[] myPropertyInfo = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (T t in objlist)
{
if (t == null)
{
continue;
}
row = dt.NewRow();
for (int i = 0, j = myPropertyInfo.Length; i < j; i++)
{
System.Reflection.PropertyInfo pi = myPropertyInfo[i];
string name = pi.Name;
if (dt.Columns[name] == null)
{
column = new DataColumn(name, pi.PropertyType);
dt.Columns.Add(column);
}
row[name] = pi.GetValue(t, null);
}
dt.Rows.Add(row);
}
return dt;
}
public static string Obj2Base64String(object serializableObject)
{
string returnedData;
if (serializableObject == null)
returnedData = String.Empty;
else
{
byte[] resultBytes = null;
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter formatter
= new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
MemoryStream stream = new MemoryStream();
formatter.Serialize(stream, serializableObject);
resultBytes = stream.ToArray();
stream.Close();
returnedData = Convert.ToBase64String(resultBytes);
}
return returnedData;
}
///
/// Json 字符串 转换为 DataTable数据集合
///
///
/// (json);
if (arrayList.Count > 0)
{
foreach (Dictionary dictionary in arrayList)
{
if (dictionary.Keys.Count() == 0)
{
result = dataTable;
return result;
}
if (dataTable.Columns.Count == 0)
{
foreach (string current in dictionary.Keys)
{
dataTable.Columns.Add(current, dictionary[current].GetType());
}
}
DataRow dataRow = dataTable.NewRow();
foreach (string current in dictionary.Keys)
{
dataRow[current] = dictionary[current];
}
dataTable.Rows.Add(dataRow); //循环添加行到DataTable中
}
}
}
catch
{
}
result = dataTable;
return result;
}
}
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Script.Serialization;
using System.Data;
namespace cn.EginSoft.Core.Commons
{
///
/// JSON帮助类
///
public class JsonHelper
{
///
/// 对象转JSON
///
/// 对象
/// JSON格式的字符串
public static string ObjectToJSON(object obj)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
try
{
return jss.Serialize(obj);
}
catch (Exception ex)
{
throw new Exception("JSONHelper.ObjectToJSON(): " + ex.Message);
}
}
///
/// 数据表转键值对集合
/// 把DataTable转成 List集合, 存每一行
/// 集合中放的是键值对字典,存每一列
///
/// 数据表
/// 哈希表数组
public static List> DataTableToList(DataTable dt)
{
List> list
= new List>();
foreach (DataRow dr in dt.Rows)
{
Dictionary dic = new Dictionary();
foreach (DataColumn dc in dt.Columns)
{
dic.Add(dc.ColumnName, dr[dc.ColumnName]);
}
list.Add(dic);
}
return list;
}
///
/// 数据集转键值对数组字典
///
/// 数据集
/// 键值对数组字典
public static Dictionary>> DataSetToDic(DataSet ds)
{
Dictionary>> result = new Dictionary>>();
foreach (DataTable dt in ds.Tables)
result.Add(dt.TableName, DataTableToList(dt));
return result;
}
///
/// 数据表转JSON
///
/// 数据表
/// JSON字符串
public static string DataTableToJSON(DataTable dt)
{
return ObjectToJSON(DataTableToList(dt));
}
///
/// JSON文本转对象,泛型方法
///
/// 类型
/// JSON文本
/// 指定类型的对象
public static T JSONToObject(string jsonText)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
try
{
return jss.Deserialize(jsonText);
}
catch (Exception ex)
{
throw new Exception("JSONHelper.JSONToObject(): " + ex.Message);
}
}
///
/// 将JSON文本转换为数据表数据
///
/// JSON文本
/// 数据表字典
public static Dictionary>> TablesDataFromJSON(string jsonText)
{
return JSONToObject>>>(jsonText);
}
///
/// 将JSON文本转换成数据行
///
/// JSON文本
/// 数据行的字典
public static Dictionary DataRowFromJSON(string jsonText)
{
return JSONToObject>(jsonText);
}
}
}