using Microsoft.Extensions.Hosting;
using Microsoft.AspNetCore.Hosting;
using Swashbuckle.AspNetCore.Swagger;

    public void ConfigureServices(IServiceCollection services)
        {
            services.AddCustomizedSwaggerGen();// #增加SwaggerGen
            services.AddControllers();
            services.AddCors(option => option.AddPolicy("cors", policy => policy.AllowAnyOrigin())); #接口跨域时，会用到该配置。默认不需要
        }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseCustomizedSwagger(env);// #增加SwaggerGen ,传入环境参数env
        }

using System.Linq;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using Swashbuckle.AspNetCore.SwaggerGen;

    public static class SwashbuckleSwaggerExtensions
    {
        public static IServiceCollection AddCustomizedSwaggerGen(this IServiceCollection services)
        {
            services.AddSwaggerGen(options =>
            {
                foreach (var doc in _docs) options.SwaggerDoc(doc, new OpenApiInfo { Version = doc });
                options.DocInclusionPredicate((docName, apiDesc) =>
                {
                    if (apiDesc.TryGetMethodInfo(out var method) == false) return false;
                    var versions = method.DeclaringType.GetCustomAttributes(false)
                        .OfType<ApiExplorerSettingsAttribute>()
                        .Select(attr => attr.GroupName);
                    if (docName == "未分类" && versions.Count() == 0) return true;
                    return versions.Any(v => v == docName);
                });
                options.IgnoreObsoleteActions();
                //options.IgnoreObsoleteControllers(); // 类、方法标记 [Obsolete]，可以阻止【Swagger文档】生成
                //options.EnableAnnotations();
                options.DescribeAllEnumsAsStrings();
                options.CustomSchemaIds(a => a.FullName);
                options.OperationFilter<FormDataOperationFilter>();
            });
            return services;
        }
        static string[] _docs = new[] { "webapi", "webui" }; 
        public static IApplicationBuilder UseCustomizedSwagger(this IApplicationBuilder app, IWebHostEnvironment env)
        {
            return app.UseSwagger().UseSwaggerUI(options =>
            {
                foreach (var doc in _docs) options.SwaggerEndpoint($"/swagger/{doc}/swagger.json", doc);
            });
        }
    }

using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;

    public class FormDataOperationFilter : IOperationFilter
    {
        public void Apply(OpenApiOperation operation, OperationFilterContext context)
        {

        }
    }

using Microsoft.AspNetCore.Mvc;
using Swashbuckle.AspNetCore.Annotations;

[HttpGet("LoginCheck"), SwaggerOperation(Tags = new[] { "LoginCheck" })]
        public string loginCheck(string jwt)
        {
        #逻辑代码
        }

 [HttpGet, SwaggerOperation(Tags = new[] { "查询事件接口" })]
        public AjaxResult Get(string day_id01 = "")
        {
            #逻辑代码
        }