有一个问题,其中DateTime / TimeSpan似乎没有使用JavaScriptSerializer正确反序列化.
当我在反序列化后得到Object时,TimeSpan为空,如果我使用DateTime,那么时间就完全没了.
找到了这篇文章,但它并没有真正帮助我太多.
http://www.west-wind.com/weblog/ShowPost.aspx?id=471402
当我在反序列化后得到Object时,TimeSpan为空,如果我使用DateTime,那么时间就完全没了.
找到了这篇文章,但它并没有真正帮助我太多.
http://www.west-wind.com/weblog/ShowPost.aspx?id=471402
有人有主意吗？我应该尝试json.net库吗？
public class JsonFilter : ActionFilterAttribute
{
public string Param { get; set; }
public Type JsonDataType { get; set; }
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext.HttpContext.Request.ContentType.Contains("application/json"))
{
string inputContent;
using (var sr = new StreamReader(filterContext.HttpContext.Request.InputStream))
{
inputContent = sr.ReadToEnd();
}
JavaScriptSerializer serializer = new JavaScriptSerializer();
var result = serializer.Deserialize(inputContent,JsonDataType);
filterContext.ActionParameters[Param] = result;
}
}
}
public class RosterItem
{
public RosterItem()
{
comments = new List<Form.Comment>();
}
public Boolean dirty { get; set; }
public int id { get; set; }
public int staffId { get; set; }
public String description { get; set; }
public int activityId { get; set; }
public DateTime date { get; set; }
public TimeSpan startTime { get; set; }
public TimeSpan endTime { get; set; }
public List<Form.Comment> comments { get; set; }
}
[JsonFilter(Param = "rosterItem",JsonDataType = typeof(RosterItem))]
public int SaveRosterEntry(RosterItem rosterItem)
{
RosterEntry rosterEntry = rosterEntryRepository.GetRosterEntry(rosterItem.id);
if (rosterEntry == null)
{
rosterEntry = new RosterEntry();
rosterEntryRepository.Add(rosterEntry);
}
rosterEntry.ActivityID = rosterItem.activityId;
rosterEntry.StartTime = rosterItem.startTime;
rosterEntry.EndTime = rosterItem.endTime;
rosterEntry.RosterDate = rosterItem.date;
rosterEntry.RosterEmployeeID = rosterItem.staffId;
rosterEntryRepository.Save();
return rosterEntry.RosterEntryID;
}
解决方法
我在GitHub上的帖子中找到了答案：
https://github.com/NancyFx/Nancy/issues/336
基本上答案是创建一个新的TimeSpanJsonConverter,它继承自JavaScriptConverter,然后将其传递给序列化程序类的实例：
var serializer = new System.Web.Script.Serialization.JavaScriptSerializer()
serializer.RegisterConverters(new[] { new TimeSpanJsonConverter() });
全班供参考(由GrumpyDev编写)：
public class TimeSpanJsonConverter : JavaScriptConverter
{
public override IEnumerable<Type> SupportedTypes
{
get
{
return new[] { typeof(TimeSpan) };
}
}
public override object Deserialize(IDictionary<string,object> dictionary,Type type,JavaScriptSerializer serializer)
{
return new TimeSpan(
this.GetValue(dictionary,"days"),this.GetValue(dictionary,"hours"),"minutes"),"seconds"),"milliseconds"));
}
public override IDictionary<string,object> Serialize(object obj,JavaScriptSerializer serializer)
{
var timeSpan = (TimeSpan)obj;
var result = new Dictionary<string,object>
{
{ "days",timeSpan.Days },{ "hours",timeSpan.Hours },{ "minutes",timeSpan.Minutes },{ "seconds",timeSpan.Seconds },{ "milliseconds",timeSpan.Milliseconds }
};
return result;
}
private int GetValue(IDictionary<string,string key)
{
const int DefaultValue = 0;
object value;
if (!dictionary.TryGetValue(key,out value))
{
return DefaultValue;
}
if (value is int)
{
return (int)value;
}
var valueString = value as string;
if (valueString == null)
{
return DefaultValue;
}
int returnValue;
return !int.TryParse(valueString,out returnValue) ? DefaultValue : returnValue;
}
}
