在ASP .NET Core 3.1的Swagger中添加标题筛选器

using System.Linq;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;

public class TitleFilter : IOperationFilter
{
    public void Apply(OpenApiOperation operation, OperationFilterContext context)
    {
        var titleAttribute = context.MethodInfo.DeclaringType.GetCustomAttributes(true)
            .Union(context.MethodInfo.GetCustomAttributes(true))
            .OfType<TitleAttribute>()
            .FirstOrDefault();

        if (titleAttribute != null)
        {
            operation.Summary = titleAttribute.Title;
        }
    }
}

public void ConfigureServices(IServiceCollection services)
{
    // ...

    services.AddSwaggerGen(c =>
    {
        c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
        c.OperationFilter<TitleFilter>(); // 注册TitleFilter
    });

    // ...
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // ...

    app.UseSwagger();
    app.UseSwaggerUI(c =>
    {
        c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
    });

    // ...
}