本示例支持localhost和生产环境。

step1: 添加最新的包，这里是5.3.1，添加最新的即可。

• <PackageReference Include=“Swashbuckle.AspNetCore” Version=“5.3.1” />
• <PackageReference Include=“Swashbuckle.AspNetCore.Swagger” Version=“5.3.1” />

step2: 设置文件目录，这一步的目的是设置注释文件存放的目录，Debug和Release需要单独设置。我们可以在需要存放的类库对应的工程文件中（如：src/Application/Application.csproj），新增如下代码，注意下目录地址。

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
    <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\xxx.xxx.Application.xml</DocumentationFile>
    <OutputPath>bin\$(Configuration)\$(TargetFramework)\</OutputPath>
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
  </PropertyGroup>

  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
    <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\xxx.xxx.Application.xml</DocumentationFile>
    <OutputPath>bin\$(Configuration)\$(TargetFramework)\</OutputPath>
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
  </PropertyGroup>

setp3: Startup.cs中注册服务，其中HttpAuthHeaderFilter是为header添加token，如果不需要的同学可以忽略。

services.AddSwaggerGen(c =>
{
   c.SwaggerDoc("v1", new OpenApiInfo { Title = "Wechat Doc", Version = "v1" });
   c.CustomSchemaIds((type) => type.FullName);
   var basePath = Path.GetDirectoryName(typeof(Program).Assembly.Location);
   var apiXmlPath = Path.Combine(basePath, "xxx.xxx.Client.xml");
   var entityXmlPath = Path.Combine(basePath, "xxx.xxxx.Application.xml");
   c.IncludeXmlComments(apiXmlPath);
   c.IncludeXmlComments(entityXmlPath);
   c.OperationFilter<HttpAuthHeaderFilter>();//这一步是为了在header中添加token验证，不需要的同学可以忽略
});

app.UseSwagger(c => { c.RouteTemplate = "swagger/{documentName}/swagger.json"; });
app.UseSwaggerUI(c =>
{
   c.SwaggerEndpoint($"v1/swagger.json", "Wechat Doc V1");
});

step4: swagger默认是把属性名作为生成文档的字段名，如果我们想用JsonProperty的别名，要怎么处理呢？

• 添加包

Install the nuget package Swashbuckle.AspNetCore.Newtonsoft

• 在startup中注册

services.AddSwaggerGenNewtonsoftSupport();

step5:
访问以下两个域名即可：
域名/swagger/v1/swagger.json
域名/swagger/index.html
如果你不需要在header中添加token，到这一步就可以了。

如果需要，继续往下看二段代码

• 如果有token验证，所有打了token特性的action都在head中添加token参数

   /// <summary>
   /// 控制swagger中是否需要添加accesstoken验证
   /// </summary>
   public class HttpAuthHeaderFilter : IOperationFilter
   {
       /// <summary>
       /// 实现接口方法
       /// </summary>
       /// <param name="operation"></param>
       /// <param name="context"></param>
       public void Apply(OpenApiOperation operation, OperationFilterContext context)
       {
           if (operation.Parameters == null)
           {
               operation.Parameters = new List<OpenApiParameter>();
           }
           if (context.ApiDescription.ActionDescriptor is ControllerActionDescriptor descriptor)
           {
               var actionAttributes = descriptor.MethodInfo.GetCustomAttributes(true);
               bool isAuthorize = actionAttributes.Any(a => a is TokenAuthorizeAttribute);
               if (isAuthorize)
               {
                   operation.Parameters.Add(new OpenApiParameter()
                   {
                       Name = TokenAuthorizeAttribute.Token,
                       In = ParameterLocation.Header,
                       Required = true
                   });
               }
           }
       }
   }

• 附上token相关代码

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
public class TokenAuthorizeAttribute : Attribute, IFilterMetadata
{
   public const string Token = "token";
}

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
public class AuthorizationFilterAttribute : Attribute, IAsyncAuthorizationFilter
{
   private readonly IAuthorityApplication _authorityApplication;
   public AuthorizationFilterAttribute(IAuthorityApplication authorityApplication)
   {
       _authorityApplication = authorityApplication ?? throw new ArgumentNullException(nameof(authorityApplication));
   }

   public async Task OnAuthorizationAsync(AuthorizationFilterContext context)
   {
       if (context.Filters.Any(filter => filter is TokenAuthorizeAttribute))
       {
           var path = context.HttpContext.Request.Path;
           var token = context.HttpContext.Request.Headers[TokenAuthorizeAttribute.Token].FirstOrDefault();
           var version = context.RouteData.Values["version"]?.ToString();
           var plat = context.RouteData.Values["plat"]?.ToString();
           if (false == await _authorityApplication.CheckPassedAsync(token, path, version, plat))
           {
               context.Result = new StatusCodeResult((int)HttpStatusCode.Unauthorized);
           }
       }
   }
}

如遇到问题，欢迎留言。