无法在Excel中使用Web API OData v3 feed

我有一个自托pipe的Web API OData v3服务：

public class Startup { public void Configuration(IAppBuilder app) { HttpConfiguration config = new HttpConfiguration(); config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); ODataModelBuilder builder = new ODataConventionModelBuilder(); builder.EntitySet<Product>("Products"); config.MapODataServiceRoute( routeName: "ODataRoute", routePrefix: null, model: builder.GetEdmModel()); app.UseWebApi(config); } } 

我也有以下控制器，它公开了一个完整的CRUD：

 public class ProductsController : ODataController { ApplicationDbContext db = new ApplicationDbContext(); private bool ProductExists(int key) { return db.Products.Any(p => p.Id == key); } protected override void Dispose(bool disposing) { db.Dispose(); base.Dispose(disposing); } [EnableQuery] public IQueryable<Product> Get() { return db.Products; } [EnableQuery] public SingleResult<Product> Get([FromODataUri] int key) { IQueryable<Product> result = db.Products.Where(p => p.Id == key); return SingleResult.Create(result); } public async Task<IHttpActionResult> Post(Product product) { if (!ModelState.IsValid) { return BadRequest(ModelState); } db.Products.Add(product); await db.SaveChangesAsync(); return Created(product); } public async Task<IHttpActionResult> Patch([FromODataUri] int key, Delta<Product> product) { if (!ModelState.IsValid) { return BadRequest(ModelState); } var entity = await db.Products.FindAsync(key); if (entity == null) { return NotFound(); } product.Patch(entity); try { await db.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!ProductExists(key)) { return NotFound(); } else { throw; } } return Updated(entity); } public async Task<IHttpActionResult> Put([FromODataUri] int key, Product update) { if (!ModelState.IsValid) { return BadRequest(ModelState); } if (key != update.Id) { return BadRequest(); } db.Entry(update).State = EntityState.Modified; try { await db.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!ProductExists(key)) { return NotFound(); } else { throw; } } return Updated(update); } public async Task<IHttpActionResult> Delete([FromODataUri] int key) { var product = await db.Products.FindAsync(key); if (product == null) { return NotFound(); } db.Products.Remove(product); await db.SaveChangesAsync(); return StatusCode(HttpStatusCode.NoContent); } } 

我能够从浏览器访问此提要没有任何问题。

但是，当我尝试让Excel 2013使用此数据源（使用此URL： http：// localhost：8080 / Products ）时，出现此错误：

“我们无法使用此Feed中的数据，请确保外部数据馈送服务器可用且您的连接信息正确”

我能做些什么来使Excel 2013能够使用这个数据源？