今天在公司做程序，发现有个异步请求，数据什么的都返回正常的，但是就是不进入ajax的success方法，甚是蛋疼，后来找了很久，说是json数据中包含html代码， html标签会破坏json数据格式。后来找了下相关的转义代码，总结下。
[code lang="CSharp"]
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("<", "<");
str = str.Replace(">", ">");
str = str.Replace(" ", " ");
str = str.Replace("\n", "<br>");
str = str.Replace("&", "&");
return str;
}
}
[/code]