ASP.NETCore为Ocelot网关配置Swagger

{
  "Routes": [
    {
      //下游服务地址
      "DownstreamPathTemplate": "/swagger/v1/swagger.JSON",
      //传输协议
      "DownstreamScheme": "Http",
      //下游主机跟端口号（数组）
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 9001
        }
      ],
      //上游服务地址
      "UpstreamPathTemplate": "/a/swagger/v1/swagger.json",
      //上游服务Http端口号（数组）
      "UpstreamHttpMethod": [ "Get", "POST" ]
    },
    {
      //下游服务地址
      "DownstreamPathTemplate": "/swagger/v1/swagger.json",
      //传输协议
      "DownstreamScheme": "http",
      //上游服务Http端口号（数组）
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 9002
        }
      ],
      //上游服务地址
      "UpstreamPathTemplate": "/b/swagger/v1/swagger.json",
      //上游服务Http端口号（数组）
      "UpstreamHttpMethod": [ "Get", "POST" ]
    },
    {
      "DownstreamPathTemplate": "/a",
      "DownstreamScheme": "http",
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 9001
        }
      ],
      "UpstreamPathTemplate": "/a",
      "UpstreamHttpMethod": [ "Get" ]
    },
    {
      "DownstreamPathTemplate": "/b",
      "DownstreamScheme": "http",
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 9002
        }
      ],
      "UpstreamPathTemplate": "/b",
      "UpstreamHttpMethod": [ "Get" ]
    }
  ],
  "GlobalConfiguration": {
    "RequestIdKey": "OcRequestId",
    "AdministrationPath": "/administration"
  }
}

public static IWEBHost BuildWebHost(string[] args) =>
    WebHost.CreateDefaultBuilder(args)
            .UseUrls("http://*:9000")
        .ConfigureAppConfiguration((hostinGContext, config) =>
        {
            config
                .SetBasePath(hostingContext.HostingEnvironment.ContentRootPath)
                .AddJsonFile("ocelot.json")
                .AddEnvironmentVariables();
        })
        .ConfigureServices(s =>
        {
            //添加Ocelot服务；
            s.AddOcelot();
            s.Addmvc();
            //添加Swagger服务；
            s.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "GW", Version = "v1" });
                var basePath = PlatfORMServices.Default.Application.ApplicationBasePath;
                var xmlPath = Path.Combine(basePath, "APIGateway.xml");
                c.IncludeXmlComments(xmlPath);
            });
        })
        .Configure(a =>
        {
            //使用Swagger
            a.UseSwagger().UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("/a/swagger/v1/swagger.json", "APIServiceA");
                c.SwaggerEndpoint("/b/swagger/v1/swagger.json", "APIServiceB");
            });

            //使用Ocelot；
            a.UseOcelot().Wait();
        })
        .Build();

services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo { Title = "APIServiceA", Version = "v1" });
    var basePath = PlatformServices.Default.Application.ApplicationBasePath;
    var xmlPath = Path.Combine(basePath, "APIServiceA.xml");
    c.IncludeXmlComments(xmlPath);
});
Configure：
app.UseSwagger();
app.UseSwaggerUI(c =>
{
    c.SwaggerEndpoint("/swagger/v1/swagger.json", "APIServiceA");
});

/// <summary>
/// Values controller.
/// </summary>
[Route("a")]
public class ValuesController : Controller
{
    // GET api/values
    /// <summary>
    /// Get values.
    /// </summary>
    /// <returns>The get.</returns>
    [HttpGet]
    public IEnumerable<string> Get()
    {
        return new string[] { "value1", "value2" };
    }
}

services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo { Title = "APIServiceB", Version = "v1" });
    var basePath = PlatformServices.Default.Application.ApplicationBasePath;
    var xmlPath = Path.Combine(basePath, "APIServiceB.xml");
    c.IncludeXmlComments(xmlPath);
});

app.UseSwagger();
app.UseSwaggerUI(c =>
{
    c.SwaggerEndpoint("/swagger/v1/swagger.json", "APIServiceB");
});

/// <summary>
/// Values controller.
/// </summary>
[Route("b")]
public class ValuesController : Controller
{
    // GET api/values
    /// <summary>
    /// Get values.
    /// </summary>
    /// <returns>The get.</returns>
    [HttpGet]
    public IEnumerable<string> Get()
    {
        return new string[] { "value3", "value4" };
    }
}