如何让 Swagger+Swashbuckle 显示端点？

Question

我正在尝试将 swagger+swashbuckle 添加到我的 ASP.NET Core 项目中。我可以启动并运行 Swagger UI，但它完全是空的。我尝试四处查看并在https://github.com/domaindrivendev/Swashbuckle/issues/1058发现了类似的问题。这让我认为路由可能是问题所在，所以我尝试为我的控制器提供一个使用[Route("testroute")]方法而不是类的显式路由。这使得我添加的路由端点毫无问题地显示出来。

由于向每个端点添加显式路由不是最佳选择，我做错了什么以及如何修复它以大摇大摆地显示我的所有端点？

我的初创公司集成了 swagger

    public class Startup
{
    public Startup(IHostingEnvironment env)
    {
        var builder = new ConfigurationBuilder()
                        .SetBasePath(env.ContentRootPath)
                        .AddJsonFile("appsettings.json", optional: true , reloadOnChange: true);

        Configuration = builder.Build();
    }

    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.AddMvc().AddJsonOptions(x => x.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore);

        // Register the Swagger generator, defining one or more Swagger documents
        services.AddSwaggerGen(c =>
        {
            c.SwaggerDoc("v1", new Info { Title = "My API", Version = "v1" });
        });

        services.AddDbContext<PromotionContext>(options => options.UseSqlServer(Configuration["ConnectionStrings:Jasmine"]));
        services.AddTransient<PromotionDbInitializer>();
        services.AddTransient<IComponentHelper, ComponentHelper>();
        services.AddTransient<IComponentFileHelper, ComponentFileHelper>();
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, PromotionDbInitializer promotionSeeder)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }

        app.UseStaticFiles();

        app.UseSwagger();

        // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.), specifying the Swagger JSON endpoint.
        app.UseSwaggerUI(c =>
        {
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
        });



        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Promotion}/{action=Index}/{id?}");
        });

       //Because there is not a seed method built into the EF migrations pipeline in EFCore this seeding method will interfere with the migrations when attempting to deploy the database
       //uncomment if you need to seed

       //promotionSeeder.Seed().Wait();
    }
}

我的控制器，其中 GetAll 和 Post 方法显示在 testroute 和 testFormRoute 下的 swagger ui 页面上，但 Get 和 Delete 方法不显示

public class PromotionController : Controller
{
    private PromotionContext context;
    public PromotionController(PromotionContext _context)
    {
        context = _context;
    }

    public IActionResult Index()
    {
        return View();
    }

    [HttpGet]
    [Route("testroute")]
    public IActionResult GetAll()
    {
        try
        {
            var result = context.Promotions
                            .Include(promotion => promotion.CombinabilityType)
                            .Include(promotion => promotion.ValueType)
                            .Include(promotion => promotion.Currency)
                            .Include(promotion => promotion.Components)
                                .ThenInclude(component => component.TargetType)
                            .ToList();
            return Ok(result);
        }
        catch(Exception ex)
        {
            return StatusCode(500);
        }
    }


    public IActionResult Get(string promoCode)
    {
        try
        {
            var result = context.Promotions
                                .Include(promotion => promotion.CombinabilityType)
                                .Include(promotion => promotion.ValueType)
                                .Include(promotion => promotion.Currency)
                                .Include(promotion => promotion.Components)
                                    .ThenInclude(component => component.TargetType)
                                .FirstOrDefault(x => x.PromoCode == promoCode);
            return Ok(result);
        }
        catch(Exception ex)
        {
            return StatusCode(500);
        }
    }

    [HttpPost]
    [Route("testFormRoute")]
    public IActionResult Post([FromForm] Promotion newPromotion)
    {
        try
        {
            context.Promotions.Add(newPromotion);
            context.SaveChanges();
        }
        catch(DbUpdateException ex)
        {
            return StatusCode(500);
        }

        return Ok();
    }

    [HttpDelete]
    public IActionResult Delete(string promoCode)
    {
        try
        {
            var promotion = context.Promotions.FirstOrDefault(x => x.PromoCode == promoCode);

            if(promotion != null)
            {
                context.Promotions.Remove(promotion);
                context.SaveChanges();
            }
        }
        catch(DbUpdateException ex)
        {
            return StatusCode(500);
        }

        return Ok();
    }
}

Answer 1

将路由属性添加到您的控制器：

[Route("[controller]/[action]")]
public class PromotionController : Controller
{
...

并在您的操作上设置 HttpGet 属性：

[HttpGet]
public IActionResult GetAll()
{
...

[HttpGet("{promoCode}")]
public IActionResult Get(string promoCode)
{
...

您必须小心如何混合和匹配静态和动态路由。查看这篇文章，了解有关 ASP.NET Core 中基于属性的路由的更多详细信息。