c# - 如何在 ASP.NET Core 3.1 上运行的启用 OData 的 Web API 中添加 Swagger

Question

我想在我的 Web API 中同时使用 OData 和 Swagger。我正在运行 ASP.NET Core 3.1。
我找到了这些文章，一篇是启用 OData，另一篇是启用 SwaggerUI

启用 OData: https://devblogs.microsoft.com/odata/enabling-endpoint-routing-in-odata/

启用 Swagger: https://www.coderjony.com/blogs/adding-swagger-to-aspnet-core-31-web-api/

但是，我似乎无法同时启用两者。看来我把它们混合错了。
这是我目前拥有的代码:
启动文件

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllers();
        services.AddOData();
        AddSwagger(services);
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseHttpsRedirection();
        app.UseRouting();
        app.UseAuthorization();

        app.UseSwagger();
        app.UseSwaggerUI(c =>
        {
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "Foo API V1");
        });

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllers();
            endpoints.Select().Filter().OrderBy().Count().MaxTop(10);
            endpoints.MapODataRoute("odata", "odata", GetEdmModel());
        });
    }

    private IEdmModel GetEdmModel()
    {
        var odataBuilder = new ODataConventionModelBuilder();
        odataBuilder.EntitySet<WeatherForecast>("WeatherForecast");

        return odataBuilder.GetEdmModel();
    }

    private void AddSwagger(IServiceCollection services)
    {
        services.AddSwaggerGen(options =>
        {
            var groupName = "v1";

            options.SwaggerDoc(groupName, new OpenApiInfo
            {
                Title = $"Foo {groupName}",
                Version = groupName,
                Description = "Foo API",
                Contact = new OpenApiContact
                {
                    Name = "Foo Company",
                    Email = string.Empty,
                    Url = new Uri("https://example.com/"),
                }
            });
        });
    }
}

当我去 https://localhost:44363/odata/weatherforecast 时它工作
但是当我尝试加载 Swagger 界面时，显示的是:

它什么都不显示!
这是我的 Controller :
Controller

[Route("[controller]")]
public class WeatherForecastController : ControllerBase
{
    private static readonly string[] Summaries = new[]
    {
        "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
    };
    
    [EnableQuery]
    public IEnumerable<WeatherForecast> Get()
    {
        var rng = new Random();
        return Enumerable.Range(1, 5).Select(index => new WeatherForecast
            {
                Id = Guid.NewGuid(),
                Date = DateTime.Now.AddDays(index),
                TemperatureC = rng.Next(-20, 55),
                Summary = Summaries[rng.Next(Summaries.Length)]
            })
            .ToArray();
    }
}

Answer 1

我的理解是组合:

ASP.NET 核心 3.1

端点路由

OData(甚至 7.4+)

Swagger

真的不行此时因为没有好ApiExplorer OData Controller /路由的实现。
但是，我遇到了同样的问题，并且可以使用以下命令在 Swagger/UI 中显示操作:

[ApiExplorerSettings(IgnoreApi = false)]
[Route("Data")]
[HttpGet]
public async Task<IEnumerable<Data>> GetData()
{
  // ...
}

并通过在启动代码中应用它(改编自 This ):

services.AddControllers(options =>
{
    IEnumerable<ODataOutputFormatter> outputFormatters =
        options.OutputFormatters.OfType<ODataOutputFormatter>()
            .Where(formatter => !formatter.SupportedMediaTypes.Any());

    foreach (var outputFormatter in outputFormatters)
    {
        outputFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/odata"));
    }

    IEnumerable<ODataInputFormatter> inputFormatters =
        options.InputFormatters.OfType<ODataInputFormatter>()
            .Where(formatter => !formatter.SupportedMediaTypes.Any());

    foreach (var inputFormatter in inputFormatters)
    {
        inputFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/odata"));
    }
});

但是，这适用于某些操作，但我认为这不是一个好的解决方案，因为它迫使您在任何地方使用非 OData API 路由元数据([Route] + HTTP 动词属性)重现 OData 约定路由。这是无稽之谈 !
能够使用 EDM 和 OData 约定从整个 API 自动生成 OpenAPI 文档会很棒……
资源:

https://github.com/OData/WebApi/issues/2024

https://github.com/domaindrivendev/Swashbuckle.AspNetCore/issues/581#issuecomment-482747072