C#从Cookie无效的JSON原语读取

Question

我正在使用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值的值似乎正确格式化:

{"主题":"疾病预防和管理","地点":"孵化场山诊所","ClassName":"我有糖尿病,我能吃什么？"}

我正在用C#编写一个SharePoint Web部件来读取cookie并解析它:

        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:

    public class Refiners
{
    public string Topic { get; set; }
    public string ClassName { get; set; }
    public string Location { get; set; }
}   

但是,此代码会抛出"无效的JSON原语"错误.我无法弄清楚为什么这不起作用.一种可能性是它没有正确读取cookie.当我打印出cookie的值作为字符串时,我得到:

%7B%22Topic%22%3A%22Disease%20Prevention%20于是%20Management%22%2C%22Class%22%3A%22Childbirth%20%26%20Parenting%202013%22%2C%22Location%22%3A%22GHC%20East %20Clinic%22%7D

Answer 1

出现URL编码,尝试使用(通过属性页面公开实例)的UrlDecode方法解码值:HtmlUtilityServer

var refiners = serializer.Deserialize<Refiners>(Server.UrlDecode(cookie.Value));