如果你正在使用最小的API，你可以使用:

app.MapGet("/hello", () => "Hello World!").ExcludeFromDescription();

基于@spottedmahns的回答。 我的任务是反过来。只显示那些被允许的。

框架:.NetCore 2.1;轻便:3.0.0

添加属性

[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
public class ShowInSwaggerAttribute : Attribute
{
}

并实现自定义IDocumentFilter

public class ShowInSwaggerFilter : IDocumentFilter
{
    public void Apply(SwaggerDocument swaggerDoc, DocumentFilterContext context)
    {

        foreach (var contextApiDescription in context.ApiDescriptions)
        {
            var actionDescriptor = (ControllerActionDescriptor) contextApiDescription.ActionDescriptor;

            if (actionDescriptor.ControllerTypeInfo.GetCustomAttributes<ShowInSwaggerAttribute>().Any() ||
                actionDescriptor.MethodInfo.GetCustomAttributes<ShowInSwaggerAttribute>().Any())
            {
                continue;
            }
            else
            {
                var key = "/" + contextApiDescription.RelativePath.TrimEnd('/');
                var pathItem = swaggerDoc.Paths[key];
                if(pathItem == null)
                    continue;

                switch (contextApiDescription.HttpMethod.ToUpper())
                {
                    case "GET":
                        pathItem.Get = null;
                        break;
                    case "POST":
                        pathItem.Post = null;
                        break;
                    case "PUT":
                        pathItem.Put = null;
                        break;
                    case "DELETE":
                        pathItem.Delete = null;
                        break;
                }

                if (pathItem.Get == null  // ignore other methods
                    && pathItem.Post == null 
                    && pathItem.Put == null 
                    && pathItem.Delete == null)
                    swaggerDoc.Paths.Remove(key);
            }
        }
    }
}

ConfigureServices代码:

public void ConfigureServices(IServiceCollection services)
{
     // other code

    services.AddSwaggerGen(c =>
    {
        // other configurations
        c.DocumentFilter<ShowInSwaggerFilter>();
    });
}

有人在github上发布了解决方案，所以我要把它粘贴到这里。所有功劳都归他。https://github.com/domaindrivendev/Swashbuckle/issues/153#issuecomment-213342771

首先创建一个Attribute类

[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
public class HideInDocsAttribute : Attribute
{
}

然后创建一个Document Filter类

public class HideInDocsFilter : IDocumentFilter
{
    public void Apply(SwaggerDocument swaggerDoc, SchemaRegistry schemaRegistry, IApiExplorer apiExplorer)
    {
        foreach (var apiDescription in apiExplorer.ApiDescriptions)
        {
            if (!apiDescription.ActionDescriptor.ControllerDescriptor.GetCustomAttributes<HideInDocsAttribute>().Any() && !apiDescription.ActionDescriptor.GetCustomAttributes<HideInDocsAttribute>().Any()) continue;
            var route = "/" + apiDescription.Route.RouteTemplate.TrimEnd('/');
            swaggerDoc.paths.Remove(route);
        }
    }
}

然后在Swagger配置类中，添加该文档过滤器

public class SwaggerConfig
{
    public static void Register(HttpConfiguration config)
    {
        var thisAssembly = typeof(SwaggerConfig).Assembly;

        config
             .EnableSwagger(c =>
                {
                    ...                       
                    c.DocumentFilter<HideInDocsFilter>();
                    ...
                })
            .EnableSwaggerUi(c =>
                {
                    ...
                });
    }
}

最后一步是在你不希望Swashbuckle生成文档的控制器或方法上添加[HideInDocsAttribute]属性。

可能会帮助某些人，但在开发(调试)期间，我们喜欢暴露整个控制器和/或动作，然后在生产(发布构建)期间隐藏它们

#if DEBUG
    [ApiExplorerSettings(IgnoreApi = false)]
#else
    [ApiExplorerSettings(IgnoreApi = true)]
#endif  

在SwaggerConfig中添加一行

c.DocumentFilter<HideInDocsFilter>();

...

public class HideInDocsFilter : IDocumentFilter
{
    public void Apply(SwaggerDocument swaggerDoc, SchemaRegistry schemaRegistry, IApiExplorer apiExplorer)
    { 
        var pathsToRemove = swaggerDoc.Paths
            .Where(pathItem => !pathItem.Key.Contains("api/"))
            .ToList();
    
        foreach (var item in pathsToRemove)
        {
            swaggerDoc.Paths.Remove(item.Key);
        }
    }
}

如果你正在使用最小的API，你可以使用:

app.MapGet("/hello", () => "Hello World!").ExcludeFromDescription();