JsonHelper

浏览数：33 / 时间：2015年06月09日

public class JsonHelper 
 { 
 /// <summary> /// 。net对象序列化为Json对象 /// </summary> /// <typeparam name="T">。net对象类型</typeparam> /// <param name="obj">需要序列化的。net对象</param> /// <returns>Json对象</returns> public static string ToJson<T>(T obj) 
 { 
 System.Web.Script.Serialization.JavaScriptSerializer script = new System.Web.Script.Serialization.JavaScriptSerializer(); 
 return script.Serialize(obj); 
 } 
 /// <summary> /// 反序列化Json对象 /// </summary> /// <typeparam name="T">需要转换成的对象</typeparam> /// <param name="sJson">Json串</param> /// <returns>。net对象</returns> public static T Deserialize<T>(string sJson) where T : class
 { 
 System.Web.Script.Serialization.JavaScriptSerializer script = new System.Web.Script.Serialization.JavaScriptSerializer(); 
 return script.Deserialize<T>(sJson); 
 } 
 /// <summary> /// List数组对象序列化 /// </summary> /// <typeparam name="T">对象类型</typeparam> /// <param name="obj">List对象值</param> /// <returns>Json串</returns> public static String ToString<T>(List<T> obj) 
 { 
 string str = string.Empty; 
 foreach (object o in obj) 
 { 
 str = str + o.ToString() + "\r\n"; 
 } 
 return str; 
 } 
 // 将datatable转换为json public static string Dtb2Json(DataTable dtb) 
 { 
 System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer(); 
 System.Collections.ArrayList dic = new System.Collections.ArrayList(); 
 foreach (DataRow dr in dtb.Rows) 
 { 
 System.Collections.Generic.Dictionary<string, object> drow = new System.Collections.Generic.Dictionary<string, object>(); 
 foreach (DataColumn dc in dtb.Columns) 
 { 
 drow.Add(dc.ColumnName, dr[dc.ColumnName]); 
 } 
 dic.Add(drow); 
  
} 
 //序列化 return jss.Serialize(dic); 
 } 
 /// <summary> /// Model 转换为Json /// </summary> /// <typeparam name="T">数据类型</typeparam> /// <param name="obj">数据对象</param> /// <returns></returns> public static string ObjectToJson<T>(T o) 
 { 
 StringBuilder Json = new StringBuilder(); 
 T obj = Activator.CreateInstance<T>(); 
 Type type = obj.GetType(); 
 PropertyInfo[] Pi = type.GetProperties(); 
 Json.Append("{"); 
 for (int i = 0; i < Pi.Length; i++) 
 { 
 Json.Append("\"" + Pi[i].Name.ToString() + "\":\"" + ChangeString(StringHelper.SetString(Pi[i].GetValue(o, null))) + "\""); 
 if (i < Pi.Length - 1) 
 { 
 Json.Append(","); 
 } 
 } 
 Json.Append("}"); 
 return Json.ToString(); 
 } 
 /// <summary> /// 把含有html标签的元素进行转换 /// </summary> /// <param name="str"></param> /// <returns></returns> private static string ChangeString(string str) 
 { 
 //str含有HTML标签的文本 str = str.Replace("<", "&lt;"); 
 str = str.Replace(">", "&gt;"); 
 str = str.Replace(" ", "&nbsp;"); 
 str = str.Replace("\n", "<br>"); 
 str = str.Replace("&", "&amp;"); 
 return str; 
 } 
 }