namespace Booking.Areas.Golfy.Models
{
public class Time
{
public string time { get; set; }
public int holes { get; set; }
public int slots_available { get; set; }
public decimal? price { get; set; }
public int? Nextcourseid { get; set; }
public bool ShouldSerializeNextcourseid
{
get
{
return this.Nextcourseid != null;
}
}
public bool? allow_extra { get; set; }
public bool ShouldSerializeallow_extra
{
get
{
return this.allow_extra != null;
}
}
}
}
namespace Booking.Areas.Golfy.Controllers
{
public class TeetimesController : Controller
{
//
// GET: /Golfy/Teetimes/
public ActionResult Index(
string date,int? courseid = null,int? clubid = null,int? holes = null,int? available = null,int? prices = null
)
{
var DateFrom = DateTime.ParseExact(date,"yyyy-MM-dd",CultureInfo.InvariantCulture);
Teetimes r = BookingManager.GetBookings(new Code.Classes.Params.ParamGetBooking()
{
ClubID = clubid,DateFrom = DateFrom,DateTo = DateFrom.AddDays(1),GroundID = courseid
});
return Json(r,JsonRequestBehavior.AllowGet);
}
}
}
上面的webservice返回一个json字符串与几个意思的时间.
我希望属性Nextcourseid和allow_extra在其值为null时被遗漏在输出之外.
我尝试了ShouldSerializeXxx但似乎没有工作.
FYI：我也尝试[ScriptIgnore]哪个工作,但不是有条件的.
解决方法
您不能使用默认Json ActionResult来删除空属性.
您可以看一下JSON.NET,它有一个属性,您可以设置为删除属性(如果为空)
[JsonProperty(NullValueHandling=NullValueHandling.Ignore)]
或者如果您不想使用其他库,您可以创建自己的json自定义ActionResult并为默认的JavaScriptSerializer注册一个新的转换器,如下所示：
public class JsonWithoutNullPropertiesResult : ActionResult
{
private object Data { get; set; }
public JsonWithoutNullPropertiesResult(object data)
{
Data = data;
}
public override void ExecuteResult(ControllerContext context)
{
HttpResponseBase response = context.HttpContext.Response;
response.ContentType = "application/x-javascript";
response.ContentEncoding = Encoding.UTF8;
if (Data != null)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.RegisterConverters(new[] { new NullPropertiesConverter() });
string ser = serializer.Serialize(Data);
response.Write(ser);
}
}
}
public class NullPropertiesConverter : JavaScriptConverter
{
public override IDictionary<string,object> Serialize(object obj,JavaScriptSerializer serializer)
{
var toSerialize = new Dictionary<string,object>();
foreach (var prop in obj.GetType()
.GetProperties(BindingFlags.Instance | BindingFlags.Public)
.Select(p => new
{
Name = p.Name,Value = p.GetValue(obj)
})
.Where(p => p.Value != null))
{
toSerialize.Add(prop.Name,prop.Value);
}
return toSerialize;
}
public override object Deserialize(IDictionary<string,object> dictionary,Type type,JavaScriptSerializer serializer)
{
throw new NotImplementedException();
}
public override IEnumerable<Type> SupportedTypes
{
get { return GetType().Assembly.GetTypes(); }
}
}
现在在你看来：
public ActionResult Index()
{
Teetimes r = BookingManager.GetBookings();
return new JsonWithoutNullPropertiesResult(t);
}
