Asp.Net Core odata 无法识别控制器中的 Get 操作方法

Question

我们在 Asp.Net Core 3.1 上使用 Odata 7.4.1，当我们使用 Get 操作方法添加新控制器时，它不起作用。

Odata 路由构建器：

app.UseMvc(
            routeBuilder =>
            {
                // the following will not work as expected
                // BUG: https://github.com/OData/WebApi/issues/1837
                // routeBuilder.SetDefaultODataOptions( new ODataOptions() { UrlKeyDelimiter = Parentheses } );
                routeBuilder.ServiceProvider.GetRequiredService<ODataOptions>().UrlKeyDelimiter = Parentheses;

                // global odata query options
                routeBuilder.Count();

                routeBuilder.MapVersionedODataRoutes("odata", "api/v{version:apiVersion}", modelBuilder.GetEdmModels());
            });

模型配置：

public class ServiceModelConfiguration : IModelConfiguration
{
    /// <summary>
    /// Applies model configurations using the provided builder for the specified API version.
    /// </summary>
    /// <param name="builder">The <see cref="ODataModelBuilder">builder</see> used to apply configurations.</param>
    /// <param name="apiVersion">The <see cref="ApiVersion">API version</see> associated with the <paramref name="builder"/>.</param>
    public void Apply(ODataModelBuilder builder, ApiVersion apiVersion)
    {
        var services = builder.EntitySet<Service>("SM").EntityType;

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

        if (apiVersion <= ApiVersions.V1)
        {
            // This is how we maintain backwards compatibility without having to explicitly
            // version our contract api models
            //store.Ignore(p => p.Email);
        }

        // see https://github.com/microsoft/aspnet-api-versioning/tree/master/samples/aspnetcore/SwaggerODataSample
        // for more examples
    }
}

模型类：

public class Service
{
    public int Id { get; set; }
    public string name { get; set; }
}

Odata 安装程序 - Api Explorer 选项：

options.QueryOptions.Controller<V1.ServicesController>()
                                    .Action(f => f.Get(default))
                                        .Allow(Skip | Count)
                                        .AllowTop(100)
                                        .AllowOrderBy("name");

服务控制器：

 /// <summary>
    /// Gets all services
    /// </summary>
    /// <param name="options">The current OData query options.</param>
    /// <returns>All available stores.</returns>
    /// <response code="200">The successfully retrieved stores.</response>
    [Produces("application/json")]
    [ProducesResponseType(typeof(Service), Status200OK)]
    //[Cached(600)]
    public async Task<IActionResult> Get(ODataQueryOptions<Models.Service> options)
    {
        _logger.LogInformation($"Hit: Stores: Get()");
        
        return Ok(new Service { Id = 123, name = "qqq" });
    }

当我们运行这段代码时，swagger 会打开，但无法识别 GET 方法，也无法在邮递员中工作：

预期：

GET /api/v1/services

Answer 1

问题是实体集名称应该指向控制器名称。 下面的行修复了它： var services = builder.EntitySet("Services").EntityType;