ASP.NET Core 7: Swagger Not Displaying API Endpoints Due to Incorrect Route Configuration
Hey everyone, I'm running into an issue that's driving me crazy. I'm having an scenario where the Swagger UI in my ASP.NET Core 7 application is not displaying any of the API endpoints. I have verified that my controllers are decorated with the `[ApiController]` and `[Route]` attributes. My `Startup.cs` is configured to use Swagger, but when I navigate to `/swagger/index.html`, it shows no endpoints available. Here’s a snippet of my `Startup.cs`: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddControllers(); services.AddEndpointsApiExplorer(); services.AddSwaggerGen(); } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { if (env.IsDevelopment()) { app.UseDeveloperExceptionPage(); } app.UseRouting(); app.UseSwagger(); app.UseSwaggerUI(c => { c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1"); c.RoutePrefix = string.Empty; }); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); } ``` I also have a sample controller: ```csharp [ApiController] [Route("api/[controller]")] public class SampleController : ControllerBase { [HttpGet] public IActionResult Get() { return Ok(new { Message = "Hello World" }); } } ``` Despite this, Swagger still shows "No operations defined in spec!". I’ve tried adding `[ApiExplorerSettings(GroupName = "v1")]` to the controller, but that did not help. My project is running on .NET 7, and I’m using Swashbuckle.AspNetCore version 6.4.0. I suspect it might be a routing scenario, but I’m not sure how to diagnose it further. Any insights into what might be going wrong? Any pointers in the right direction?