WebApi + OData =错误 - ＆gt; “该属性不属于指定的类型”

时间：2012-10-16 18:58:57

标签： .net-4.0 asp.net-mvc-4 asp.net-web-api odata

我在URI中使用的任何OData命令，都会显示以下错误！ 当我使用没有任何配置/参数OData的api时，效果很好！ 但是，任何$filter，$top或$skip都会产生以下错误：

代码

ApiController 

[Queryable]
public IQueryable<Processo> get()
{
    return _repositorio.Query<Processo>();
}

Api路线 

public static void Register(HttpConfiguration config)
{
    // Controller Only -> To handle routes like `/api/pessoas`
    config.Routes.MapHttpRoute(
        name: "ControllerOnly",
        routeTemplate: "api/{controller}"
    );

    // Controller with ID -> To handle routes like `/api/pessoas/1`
    config.Routes.MapHttpRoute(
        name: "ControllerAndId",
        routeTemplate: "api/{controller}/{id}",
        defaults: null,
        constraints: new { id = @"^\d+$" } // Only integers 
    );

    // Controllers with Actions -> To handle routes like `/api/pessoas/getProfissoes`
    config.Routes.MapHttpRoute(
        name: "ControllerAndAction",
        routeTemplate: "api/{controller}/{action}"
    );

    config.Formatters.JsonFormatter.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects;
    config.Formatters.Remove(config.Formatters.XmlFormatter);
}

IRepository查询工具 

public IQueryable<T> Query<T>(params Expression<Func<T, object>>[] includeProperties)
    where T : class, IEntity
{
    return includeProperties.Aggregate<Expression<Func<T, object>>, IQueryable<T>>(Set<T>(), (current, includeProperty) => current.Include(includeProperty));
}

[已添加] Processo课程 

public class Processo : IEntity, IAuditable
{
    public DateTime CreateAt { get; set; }
    public string CreateBy { get; set; }
    public DateTime? UpdateAt { get; set; }
    public string UpdateBy { get; set; }

    public int Id { get; set; }

    public DateTime DataEntrada { get; set; }
    public virtual Modalidade Modalidade { get; set; }
    public virtual PassoExecucao PassoAtual { get; set; }

    public string Imovel { get; set; }
    public double ValorFinanciado { get; set; }
    public double ValorVenda { get; set; }
    public double? FGTS { get; set; }

    public virtual Pessoa Comprador { get; set; }
    public virtual Pessoa Proprietario { get; set; }

    public virtual Agencia Agencia { get; set; }
    public virtual Empresa Despachante { get; set; }
    public virtual Empresa Originador { get; set; }

    public virtual ICollection<File> Arquivos { get; set; }
    public virtual ICollection<Historico> Historicos { get; set; }
}

的尝试

  1. 网址：/api/processos?$filter=Id eq 1 错误相同
  2. 网址：/api/processos?$skip=1 错误相同
  3. 网址：/api/processos 没有错误!!

    4. [已添加]进行一些测试。发现只发生在引用Person类的地方。 

    public class Pessoa : IEntity, IAuditable
{
    public int Id { get; set; }

    public DateTime CreateAt { get; set; }
    public string CreateBy { get; set; }
    public DateTime? UpdateAt { get; set; }
    public string UpdateBy { get; set; }

    public string Nome { get; set; }
    public DateTime? DataNascimento { get; set; }
    public GeneroEnum Genero { get; set; }
    public virtual TipoPessoa Tipo { get; set; }
    public virtual Pessoa Conjuge { get; set; }

    public virtual Nacionalidade Nacionalidade { get; set; }
    public string Naturalidade { get; set; }
    public virtual Profissao Profissao { get; set; }
    public string Empresa { get; set; }
    public double? RendaBrutaMensal { get; set; }
    public DateTime? DataInicioEmpresa { get; set; }
    public DateTime? DataReferenciaEmpresa { get; set; }
    public EscolaridadeEnum Escolaridade { get; set; }

    public string CPF { get; set; }
    public string PIS { get; set; }
    public string RG { get; set; }
    public string OrgaoExpedidor { get; set; }
    public string TipoDocumento { get; set; }
    public DateTime? DataEmissao { get; set; }

    public EstadoCivilEnum? EstadoCivil { get; set; }
    public RegimeCasamentoEnum? RegimeCasamento { get; set; }
    public bool? ComposicaoRenda { get; set; }
    public bool? UniaoEstavel { get; set; }

    public virtual ICollection<Telefone> Telefones { get; set; }
    public virtual ICollection<Endereco> Enderecos { get; set; }
    public virtual ICollection<Email> Emails { get; set; }
}

    错误

    使用Processo类 

    [Queryable]
public IQueryable<Processo> get()
{
    return _repositorio.Query<Processo>();
}

    enter image description here 

    {
    "$id": "1",
    "Message": "An error has occurred.",
    "ExceptionMessage": "The property does not belong to the specified type.\r\nParameter name: navigationProperty",
    "ExceptionType": "System.ArgumentException",
    "StackTrace": "   at System.Web.Http.OData.Builder.EntityTypeConfiguration.AddNavigationProperty(PropertyInfo navigationProperty, EdmMultiplicity multiplicity)\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.MapEntityType(IEntityTypeConfiguration entity)\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.AddEntity(Type type)\r\n   at System.Web.Http.OData.Builder.EntityTypeConfiguration.AddNavigationProperty(PropertyInfo navigationProperty, EdmMultiplicity multiplicity)\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.MapEntityType(IEntityTypeConfiguration entity)\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.MapTypes()\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.GetEdmModel()\r\n   at System.Web.Http.HttpActionDescriptorExtensions.<>c__DisplayClass1.<GetEdmModel>b__0(Object _)\r\n   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)\r\n   at System.Web.Http.HttpActionDescriptorExtensions.GetEdmModel(HttpActionDescriptor actionDescriptor, Type entityClrType)\r\n   at System.Web.Http.QueryableAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.CallOnActionExecuted(HttpActionContext actionContext, HttpResponseMessage response, Exception exception)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<>c__DisplayClass2.<System.Web.Http.Filters.IActionFilter.ExecuteActionFilterAsync>b__0(HttpResponseMessage response)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass41`2.<Then>b__40(Task`1 t)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.ThenImpl[TTask,TOuterResult](TTask task, Func`2 continuation, CancellationToken cancellationToken, Boolean runSynchronously)"
}

    使用Pessoa课程 

    [Queryable]
public IQueryable<Pessoa> get()
{
    return _repositorio.Query<Pessoa>();
}


{
    "$id": "1",
    "Message": "An error has occurred.",
    "ExceptionMessage": "An item with the same key has already been added.",
    "ExceptionType": "System.ArgumentException",
    "StackTrace": "   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)\r\n   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)\r\n   at System.Web.Http.OData.Builder.EdmTypeBuilder.<GetEdmTypes>d__0.MoveNext()\r\n   at System.Linq.Enumerable.<OfTypeIterator>d__aa`1.MoveNext()\r\n   at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)\r\n   at System.Web.Http.OData.Builder.EdmModelHelperMethods.BuildEdmModel(String containerNamespace, String containerName, IEnumerable`1 entityTypeConfigurations, IEnumerable`1 entitySetConfigurations)\r\n   at System.Web.Http.OData.Builder.ODataModelBuilder.GetEdmModel()\r\n   at System.Web.Http.OData.Builder.ODataConventionModelBuilder.GetEdmModel()\r\n   at System.Web.Http.HttpActionDescriptorExtensions.<>c__DisplayClass1.<GetEdmModel>b__0(Object _)\r\n   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)\r\n   at System.Web.Http.HttpActionDescriptorExtensions.GetEdmModel(HttpActionDescriptor actionDescriptor, Type entityClrType)\r\n   at System.Web.Http.QueryableAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.CallOnActionExecuted(HttpActionContext actionContext, HttpResponseMessage response, Exception exception)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<>c__DisplayClass2.<System.Web.Http.Filters.IActionFilter.ExecuteActionFilterAsync>b__0(HttpResponseMessage response)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass41`2.<Then>b__40(Task`1 t)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.ThenImpl[TTask,TOuterResult](TTask task, Func`2 continuation, CancellationToken cancellationToken, Boolean runSynchronously)"
}

2 个答案:

答案 0 :(得分：1)

这个答案总结了聊天中发生的事情。所以它读取的触摸与标准答案不同。

我没有具体说明这个错误，但看起来OData很难找到“id”属性。将oData拉出到独立包后，会发生一些变化。

<强>版本吗
我要检查的第一件事是你是否有独立的oData包（Microsoft.Data.OData 5.0.1和Microsoft.AspNet.WebApi.OData 0.1.0-alpha-120815）。您可以通过在包管理控制台中键入Get-Package来执行此操作。

在聊天中你发布了这些：

  

Microsoft.AspNet.WebApi.OData 0.1.0-alpha-120815
  Microsoft.Data.Edm 5.1.0-rc2
  Microsoft.Data.OData 5.1.0-rc2
  Microsoft.Data.OData.Contrib 5.1.0.50918-rc
  System.Spatial 5.1.0-rc2

所以看起来你还在运行产品的RC。 is an old bug似乎描述了这种行为。缺点是，具有继承属性的类会抛出错误。

当前不这样做
更新到当前版本似乎无法解决问题。所以下一步是尝试新签名的夜宵。

获取已签名的每晚构建are here的说明。

签名的夜间版本解决了这个问题。

另一种想法

oData更改后，产品需要能够识别关键属性。 This article个州

  

不知何故，[Queryable]属性必须找到一个键属性。这个   如果您的元素类型具有ID属性，则会自动发生   您可能需要手动配置模型（请参阅设置您的   模型）。

如果您正在使用Entity Framework，那么person对象是否定义了实体键？如果没有，您可以尝试“设置模型部分”中指定的oDataConventionModelBuilder。类似的东西：

ODataModelBuilder modelBuilder = new ODataConventionModelBuilder();
var pessoa= modelBuilder.EntitySet<Pessoa>("Pessoa"); 

 pessoa..HasKey(p => p.Id); 
 ...

答案 1 :(得分：0)

OData需要您为Pessoa类指定主键的概念。要么通过添加属性来执行此操作：

[DataServiceKey("Id")]
public class Pessoa : IEntity, IAuditable
{
    public int Id { get; set; }
    //...
}

或明确构建指定密钥的模型，如OData Web API发布博客文章http://blogs.msdn.com/b/alexj/archive/2012/08/15/odata-support-in-asp-net-web-api.aspx中的“设置模型”标题部分所述。

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