AspNetCore 无法加载类型“Swashbuckle.AspNetCore.SwaggerGen.SwaggerResponseAttribute”

Question

我有 ASP.NET Core Web 应用程序，我在其中使用 swagger 使用以下内容：

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();
    services.AddSwaggerGen(c =>
    {
        c.OperationFilter<ExamplesOperationFilter>();
        c.OperationFilter<DescriptionOperationFilter>();
        c.SwaggerDoc("v1", new Info
        {
            Version = "v1",
            Title = "API",
            Description = "",
        });
        // Set the comments path for the Swagger JSON and UI.
        var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
        var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
        c.IncludeXmlComments(xmlPath);
    });
}


public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseSwagger();
    app.UseSwaggerUI(c => { c.SwaggerEndpoint("/swagger/v1/swagger.json", "API"); });
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseMvc();
}

当我导航到 url/swagger 时，出现以下错误：

失败：Microsoft.AspNetCore.Server.Kestrel[13] 连接 ID“0HLG1T7PRT05H”，请求 ID：应用程序引发了未处理的异常。System.TypeLoadException: 无法从程序集 'Swashbuckle.AspNetCore.SwaggerGen, Version=3.0.0.0, Culture=neutral'.at Swashbuckle.AspNetCore.Examples.DescriptionOperationFilter.SetResponseModelDescriptions 加载类型 'Swashbuckle.AspNetCore.SwaggerGen.SwaggerResponseAttribute' , ISchemaRegistry schemaRegistry, ApiDescription apiDescription) at Swashbuckle.AspNetCore.Examples.DescriptionOperationFilter.Apply(Operation operation, OperationFilterContext context) at Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator.CreateOperation(ApiDescription apiDescription, ISchemaRegistryCorenetschemaRegistry.Asp)1 apiDescriptions, ISchemaRegistry schemaRegistry) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 个源，Func 2 keySelector, Func2 elementSelector，IEqualityComparer 1 comparer) at Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator.CreatePathItems(IEnumerable1 apiDescriptions，ISchemaRegistry schemaRegistry) 在 Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator.GetSwagger(String documentName, String host, String basePath, String[] 方案) 在 Swashbuckle.AspNetCore.Swaggerware.SwaggerMiddle(M) HttpContext httpContext) 在 Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 应用程序)

我安装的nuget包是：

Swashbuckle.AspNetCore v3.0.0

Swashbuckle.AspNetCore.Examples v2.9.0

Answer 1

卸载软件包

Swashbuckle.AspNetCore.Examples

应该解决这个问题。新包是（还没试过）-

Swashbuckle.AspNetCore.Filters

（更新） 新包运行良好

Answer 2

这对我们有用，同时升级到 .netcore 3.0：

1) 安装包 Swashbuckle.AspNetCore -Version 5.0.0-rc4

2）将代码更改为

    public void ConfigureServices(IServiceCollection services)
    {
        ...
        services.AddSwaggerGen(c =>
                {
                    c.SwaggerDoc("v1", new OpenApiInfo { Title = "WebAPI", Version = "v1" });
                });
        ...
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env,ILoggerFactory loggerFactory)
    {
        ...
        app.UseSwagger();
        app.UseSwaggerUI(c =>
        {
            c.RoutePrefix = "swagger/ui";
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "WebAPI(v1)");
        });
        ...
    }

基本上，以下示例位于https://github.com/domaindrivendev/Swashbuckle.AspNetCore/releases/tag/v5.0.0-rc4

Answer 3

将 Swashbuckle.AspNetCore 回滚到 v2.5.0 就可以了