一、创建相关文件

1. 创建一个Utility/SwaggerExt文件夹，添加一个类
   

二、在Program中找到Swagger相关配置信息

三、添加方法，在Program中调用

1. 在SwaggerExt类中添加方法，将相关配置添写入

/// <summary>
/// swagger配置
/// </summary>
/// <param name="builder"></param>
public static void AddSwaggerExt(this WebApplicationBuilder builder )
{
    builder.Services.AddSwaggerGen();
    // 添加swagger注释
    builder.Services.AddSwaggerGen(x =>
    {
           x.SwaggerDoc("v1", new OpenApiInfo { Title = "Swagger标题", Version = "第一版", Description = ".NET Core WebAPI中使用swagger版本控制，添加注释" });
           var curr = AppContext.BaseDirectory;
           x.IncludeXmlComments(curr + "/WebApplication1.xml", true);
    });
}

/// <summary>
/// 使用Swagger
/// </summary>
/// <param name="app"></param>
public static void UseSwaggerExt(this WebApplication app)
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

2. 调用封装的方法

 // 调用封装的Swagger配置
//SwaggerExt.AddSwaggerExt(builder);
builder.AddSwaggerExt();

if (app.Environment.IsDevelopment())
{
    app.UseSwaggerExt();
}