我正在尝试运行RavenDB转换，但我遇到了以下异常：

Raven.Imports.Newtonsoft.Json.JsonSerializationException：无法读取属性值：Id ---> System.FormatException：输入字符串的格式不正确 .

我认为这是因为我的模型使用整数ID而不是字符串 . 如何让转换与int一起使用？

DiscountCode_ViewModel.cs

public class DiscountCode_ViewModel : AbstractTransformerCreationTask<DiscountCode>
{
    public DiscountCode_ViewModel()
    {
        TransformResults = discounts => discounts
            .Select(discount => new SimpleDiscountCode
            {
                // Throws an exception here
                Id = discount.Id,
                MerchantId = discount.MerchantId,
                TermsAndConditions = discount.TermsAndConditions,
                Code = discount.Code,
                Description = discount.Description
            });
    }
}

DiscountCode.cs

public class DiscountCode
{
    public int Id { get; set; }
    public int MerchantId { get; set; }
    public string Description { get; set; }
    public string Code { get; set; }
    public string TermsAndConditions { get; set; }

    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
    public int SortOrder { get; set; }

    // a bunch more properties...
}

SimpleDiscountCode.cs

public class SimpleDiscountCode
{
    public int Id { get; set; }
    public int MerchantId { get; set; }
    public string Title { get; set; }
    public string Code { get; set; }
    public string TermsAndConditions { get; set; }
}

DiscountCode_ByMerchantId.cs

public class DiscountCodes_ByMerchantId : AbstractIndexCreationTask<DiscountCode>
{
    public DiscountCodes_ByMerchantId()
    {
        Map = discounts => discounts
            .Select(discount => new
            {
                discount.MerchantId,
                discount.StartDate,
                discount.EndDate,
                discount.SortOrder
            });

        Sort(x => x.SortOrder, SortOptions.Int);
    }
}

Query.cs

var discounts = await session
                .Query<DiscountCode, DiscountCodes_ByMerchantId>()
                .Include<DiscountCode, Merchant>(d => d.MerchantId)
                .Where(x => x.MerchantId == id)
                .Where(x => x.StartDate <= DateTime.Now && x.EndDate >= DateTime.Now)
                .OrderBy(x => x.SortOrder)
                .TransformWith<DiscountCode_ViewModel, SimpleDiscountCode>()
                .ToListAsync();

var merchant = await session.LoadAsync<Merchant>(id);

堆栈跟踪

Raven.Imports.Newtonsoft.Json.JsonSerializationException发生HResult = -2146233088 Message =无法读取属性值：Id Source = Raven.Abstractions StackTrace：at Raven.Imports.Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject（Object newObject， JsonReader阅读器，JsonObjectContract Contract ，JsonProperty成员，String id）在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：2015年在Raven.Imports.Newtonsoft Json.Serialization.JsonSerializerInternalReader.CreateObject（JsonReader reader，Type objectType，JsonContract contract，JsonProperty成员，JsonContainerContract containerContract，JsonProperty containerMember，Object existingValue）在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：Raven.Imports.Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize（JsonReader reader，Type ob）第434行jectType，Boolean checkAdditionalContent）在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：第180行在Raven.Imports.Newtonsoft.Json.JsonSerializer.DeserializeInternal（ JsonReader reader，Type objectType）在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ JsonSerializer.cs：第732行在Raven.Client.Document.SessionOperations.QueryOperation.DeserializedResult [T ]（RavenJObject结果）在C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ SessionOperations \ QueryOperation.cs：Raven.Client.Document.SessionOperations.QueryOperation.Deserialize [T]中的第262行（RavenJObject）结果）在C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ SessionOperations \ QueryOperation.cs：第190行Raven.Client.Document.SessionOperations.QueryOperation.b__26_0 [T]（RavenJObject x）in C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ SessionOperations \ QueryOperation.cs：Syst第139行位于C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ SessionOperations中的Raven.Client.Document.SessionOperations.QueryOperation.Complete [T]（）中的em.Linq.Enumerable.SelectListIterator2.ToList（） QueryOperation.cs：位于C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ AsyncDocumentQuery.cs中的Raven.Client.Document.AsyncDocumentQuery1.d__118.MoveNext（）的第138行：第1230行---结束来自抛出异常的先前位置的堆栈跟踪---在Raven.Client.Document.AsyncDocumentQuery1的System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）的System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）处 . <ToListAsync> d _110.MoveNext（）在C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Client.Lightweight \ Document \ AsyncDocumentQuery.cs：第1157行---从先前位置抛出异常的堆栈跟踪结束 - - System.Runtime.CompilerSe上的System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） System.Runtime.CompilerServices.TaskAwaiter1.GetResult（）中的rvices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）位于C：\ GitCode \ TCB.MerchantService \ src \ TCB.MerchantService中的TCB.MerchantService.Data.MerchantRepository.d__3.MoveNext（） .Data \ MerchantRepository.cs：第64行InnerException：HResult = -2146233033 Message =输入字符串的格式不正确 . Source = System.Private.CoreLib StackTrace：System.Number.StringToNumber（String str，NumberStyles options，NumberBuffer＆number，NumberFormatInfo info，Boolean parseDecimal），位于System的System.Number.ParseInt32（String s，NumberStyles style，NumberFormatInfo info） . System.Convert.ChangeType（Object value，Type conversionType，IFormatProvider provider）中的String.System.IConvertible.ToInt32（IFormatProvider提供程序），位于Raven.Abstractions.Json.JsonNumericConverter`1.ReadJson（JsonReader reader，Type objectType，Object existingValue，JsonSerializer）序列化程序）在C：\ Builds \ RavenDB-Stable-3.5 \ Raven.Abstractions \ Json \ JsonNumericConverter.cs：第36行在Raven.Imports.Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable（JsonConverter转换器，JsonReader读取器，Type objectType，对象existingValue）在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：line 1769 at at在C：\ Builds \ RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json中的Raven.Imports.Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue（JsonProperty属性，JsonConverter propertyConverter，JsonContainerContract containerContract，JsonProperty containerProperty，JsonReader reader，Object target） Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：C：\ Builds \中Raven.Imports.Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject（Object newObject，JsonReader reader，JsonObjectContract contract，JsonProperty member，String id）的第900行RavenDB-Stable-3.5 \ Imports \ Newtonsoft.Json \ Src \ Newtonsoft.Json \ Serialization \ JsonSerializerInternalReader.cs：line 2005 InnerException：

小提琴请求

POST /查询HTTP / 1.1主机：localhost：8080连接：keep-alive内容长度：16接受：application / json，text / javascript，/; q = 0.01原产地：http：// localhost：8080 X-Requested-With：XMLHttpRequest User-Agent：Mozilla / 5.0（Windows NT 10.0; WOW64）AppleWebKit / 537.36（KHTML，类似Gecko）Chrome / 57.0.2987.133 Safari / 537.36 Content-Type：application / json; charset = UTF-8 Referer：http：// localhost：8080 / studio / index.html Accept-Encoding：gzip，deflate，br Accept-Language：en-US，en; q = 0.8 Cookie：_ga = GA1.1.1952671077 . 1488191167

c# ravendb