在Asp.net Core 5中,使用OData服务时,services.AddOData方法可能会出现无法工作的问题。解决这个问题的方法是添加“Microsoft.AspNetCore.OData.Versioning”NuGet程序包,并使用services.AddODataApiExplorer()方法代替services.AddOData()方法。以下是代码示例:
首先,需要添加“Microsoft.AspNetCore.OData.Versioning”NuGet程序包。
在启动文件中(通常是Startup.cs),使用以下代码进行配置:
使用名称空间:
using Microsoft.AspNet.OData.Extensions;
using Microsoft.AspNet.OData.Builder;
using Microsoft.AspNetCore.Mvc.Versioning;
using Microsoft.AspNetCore.OData.Versioning;
// Startup.cs
public void ConfigureServices(IServiceCollection services)
{
// Enable API Versioning
services.AddApiVersioning(options =>
{
// Configure API Versioning Options — Version by URL Segment
options.ReportApiVersions = true;
options.AssumeDefaultVersionWhenUnspecified = true;
options.DefaultApiVersion = new ApiVersion(1, 0);
options.ApiVersionReader = new UrlSegmentApiVersionReader();
// Configure API Versioning Options — Route Contraints
options.Conventions.Controller()
// Allow an API version to be specified without a required prefix
.HasApiVersion(new ApiVersion(1, 0))
.HasApiVersion(new ApiVersion(2, 0))
.Action(c => c.Get(default)).MapToApiVersion(1, 2);
});
// Add OData support
services.AddODataApiExplorer(options =>
{
options.GroupNameFormat = "'v'VVV";
options.SubstituteApiVersionInUrl = true;
})
.AddODataRouting(options =>
{
options.MapVersionedODataRoutes("odata", "api", b => b.AddApiExplorer());
});
}
// Add endpoint routing
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
// Map OData Route
endpoints.EnableDependencyInjection();
endpoints.Select().Filter().OrderBy().Count().MaxTop(1000);
endpoints.MapVersionedO