LaunchUrlStudy/LaunchUrlStudy.SubSite4/Program.cs

using Microsoft.AspNetCore.Http.Extensions;

namespace LaunchUrlStudy.SubSite4
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.
            builder.Services.AddControllers();
            builder.Services.AddEndpointsApiExplorer();
            builder.Services.AddSwaggerGen();

            var app = builder.Build();

            app.UseSwagger();
            app.UseSwaggerUI();

            app.UseAuthorization();
            app.MapControllers();

            //配置启动地址(支持子站点):自定义中间件+重定向
            app.Use(async (context, next) =>
            {
                if (context.Request.Path == "" || context.Request.Path == "/")
                {
                    string swaggerUrl = UriHelper.BuildAbsolute(context.Request.Scheme, context.Request.Host, context.Request.PathBase, "/swagger");
                    context.Response.Redirect(swaggerUrl);
                }
                else
                {
                    await next();
                }
            });


            app.Run();
        }
    }
}