的OData在列表.NET的核心Web API序列化/字典

Question

我使用.NET的核心2.0.0 https://www.nuget.org/packages/microsoft.aspnetcore.odata

这是我的设置为止。

Startup.cs

public void ConfigureServices(IServiceCollection services) 
{ 
    ... 
    services.AddOData(); 
    services.AddSingleton<IODataModelManger, ODataModelManager>(DefineEdmModel); 
    ... 
} 

private ODataModelManager DefineEdmModel(IServiceProvider services) 
{ 
    var modelManager = new ODataModelManager(); 

    var builder = new ODataConventionModelBuilder(); 
    builder.EntitySet<TestDTO>(nameof(TestDTO)); 
    builder.EntityType<TestDTO>().HasKey(ai => ai.Id); // the call to HasKey is mandatory 
    modelManager.AddModel(nameof(Something), builder.GetEdmModel()); 

    return modelManager; 
} 

public void Configure(...) 
{ 
    ... 
    var modelBuilder = new ODataConventionModelBuilder(); 
    modelBuilder.EntitySet<TestDTO>("TestDTOs"); 

    app.UseMvc(builder => 
    { 
     builder.MapODataRoute("api", modelBuilder.GetEdmModel()); 
    }); 
    ... 
} 

控制器

[HttpGet("all")] 
public async Task<IQueryable<TestDTO>> Get() 
{ 
    // plug your entities source (database or whatever) 
    var test = await TestService.GetTest(); 

    var modelManager = (IODataModelManger)HttpContext.RequestServices.GetService(typeof(IODataModelManger)); 
    var model = modelManager.GetModel(nameof(Something)); 
    var queryContext = new ODataQueryContext(model, typeof(TestDTO), null); 
    var queryOptions = new ODataQueryOptions(queryContext, HttpContext.Request, Provider); 

    return queryOptions 
     .ApplyTo(test, new ODataQuerySettings 
     { 
      HandleNullPropagation = HandleNullPropagationOption.True 
     }, null) 
     .Cast<TestDTO>(); 
} 

模型

public class TestDTO : BaseEntityDTO 
{ 
    [Required] 
    public Guid Id { get; set; } 
    public List<CustomerDTO> Customers { get; set; } 
    public List<string> Tags { get; set; } 
    [JsonExtensionData] 
    public IDictionary<string, object> AddProperties { get; set; } 
} 

的问题是，与services.AddOData();我只得到属性Id的返回结果，没有services.AddOData();我得到了json格式的所有属性。

我该如何序列化列表属性，也许词典以及？

谢谢。

Answer 1

这奏效了

var result = queryOptions 
         .ApplyTo(test, new ODataQuerySettings 
         { 
          HandleNullPropagation = 
          HandleNullPropagationOption.True 
          }, null) 
          .Cast<TestDTO>(); 
return Json(result);