部署到IIS后，Swagger UI页面不显示

Question

将 ASP.NET Core Web API 部署到 IIS 后，不显示 Swagger UI 页面。

配置部分：

app.UseSwaggerUI(c =>
        {
            if (env.IsDevelopment() || env.IsProduction())

            {
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "My Test1 Api v1");
            }
        });

配置服务：

services.AddSwaggerGen( );

Answer 1

添加c.RoutePrefix = string.Empty;，将会改变起始页。

默认情况下，URL 应为 https://ip：port/swagger/index.html。当你部署这个应用程序后，你会得到404错误，不用担心，你可以在url中附加swagger，它会显示index.html。

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers();
    ...
    services.AddSwaggerGen();
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    ...
    app.UseSwagger();
    app.UseSwaggerUI(c =>
    {
        if (env.IsDevelopment() || env.IsProduction())

        {
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "My Test1 Api v1");
            // Add this line, it will work for you
            c.RoutePrefix = string.Empty;
        }
    });

    app.UseHttpsRedirection();

    app.UseRouting();

    app.UseAuthorization();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}