C#从Cookie读取无效的JSON基元
本文关键字:JSON 基元 无效 读取 Cookie | 更新日期: 2023-09-27 18:22:49
我使用JQuery.Cookie将javascript对象存储为Cookie值:
var refinerData = {};
// Read in the current cookie if it exists:
if ($.cookie('RefinerData') != null) {
refinerData = JSON.parse($.cookie('RefinerData'));
}
// Set new values based on the category and filter passed in
switch(category)
{
case "topic":
refinerData.Topic = filterVal;
break;
case "class":
refinerData.ClassName = filterVal;
break;
case "loc":
refinerData.Location = filterVal;
break;
}
// Save the cookie:
$.cookie('RefinerData', JSON.stringify(refinerData), { expires: 1, path: '/' });
当我在firebug中调试时,cookie值的格式似乎正确:
{"主题":"疾病预防和管理","地点":"哈奇里山诊所","课程名称":"我患有糖尿病,我能吃什么?"}
我正在用C#编写一个SharePoint web部件,它读取cookie并对其进行解析:
protected void Page_Load(object sender, EventArgs e)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies["RefinerData"];
if (cookie != null)
{
string val = cookie.Value;
// Deserialize JSON cookie:
JavaScriptSerializer serializer = new JavaScriptSerializer();
var refiners = serializer.Deserialize<Refiners>(cookie.Value);
output.AppendLine("Deserialized Topic = " + refiners.Topic);
output.AppendLine("Cookie exists: " + val);
}
}
我有一个Refiners类,用于序列化到:
public class Refiners
{
public string Topic { get; set; }
public string ClassName { get; set; }
public string Location { get; set; }
}
然而,这段代码抛出了一个"无效的JSON原语"错误。我不明白为什么这不起作用。一种可能是它没有正确读取cookie。当我把cookie的值打印成字符串时,我得到:
%7B%22主题%22%3A%22疾病%20预防%20和%20管理%22%2C%22类别%22%3A/22分娩%20%26%20育儿%202013%22%2C/22地点%22%3A22GHC%20East%20诊所%22%7D
显示URL编码,尝试使用HtmlUtility
的UrlDecode
方法解码值(其中实例由页面通过Server
属性公开):
var refiners = serializer.Deserialize<Refiners>(Server.UrlDecode(cookie.Value));
我认为您需要在反序列化之前解码cookie。尝试使用;
Refiners refiners = serializer.Deserialize<Refiners>(Server.UrlDecode(cookie.Value));