FytApi.MUI

// 默认 swagger 不要删除
app.UseSwagger();
// 兼容 默认 SwaggerUI  可保留可删除
app.UseSwaggerUI();
// [增加]  配置UI HTTP请求管道，及相关中间件处理 ，这里配置和Swagger默认配置一样
app.UseFytApiUI(c =>
{
   c.SwaggerEndpoint("/swagger/v1/swagger.json", "devault","v1");
});
app.UseStaticFiles();

在项目中右击,增加XML生成
参考如下代码
builder.Services.AddSwaggerGen(options =>
{
    // 配置相关组
    options.SwaggerDoc("v1", new Microsoft.OpenApi.Models.OpenApiInfo { Title = "天气", Version = "v1" });
    options.SwaggerDoc("v2", new Microsoft.OpenApi.Models.OpenApiInfo { Title = "用户", Version = "v1" });
    // 增加项目xml注释显示，如果有多个类库要显示，可以继续增加
    options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, "TestApi.xml"),true);
    // [示例]-增加Model xml显示
    options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, "TestApi.Model.xml"),true);
});

// UI 和 Swagger配置一样一样滴
app.UseFytApiUI(c =>
{
    c.SwaggerEndpoint("/swagger/v1/swagger.json", "天气","v1");
    c.SwaggerEndpoint("/swagger/v2/swagger.json", "用户","v2");
});
app.UseStaticFiles();

netcore6.0  启动配置默认访问的是swagger , 而本项目默认地址为 fytapiui

修改如下文件可设置默认访问
项目根目录 Properties/launchSettings.json
 "profiles": {
    "SwaggerApi": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "launchUrl": "fytapiui/index.html",  //将swagger 修改为 fytapiui/index.html
      "applicationUrl": "https://localhost:7106;http://localhost:5106",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "launchUrl": "fytapiui/index.html", //将swagger 修改为 fytapiui/index.html
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }

重新启动项目即可 
https://localhost:7235/fytapiui