net core webapi多版本控制与swagger（nswag）配置教程

services.AddApiVersioning(option =>
  {
   // 可选，为true时API返回支持的版本信息
   option.ReportApiVersions = true;
   // 不提供版本时，默认为1.0
   option.AssumeDefaultVersionWhenUnspecified = true;
   //版本信息放到header ,不写在不配置路由的情况下，版本信息放到response url 中
   option.ApiVersionReader = new HeaderApiVersionReader("api-version");
   // 请求中未指定版本时默认为1.0
   option.DefaultApiVersion = new ApiVersion(1, 0);
  }).AddVersionedApiExplorer(option =>
  {  // 版本名的格式v+版本号
   option.GroupNameFormat = "'v'V";
   option.AssumeDefaultVersionWhenUnspecified = true;
  });
  ////获取webapi版本信息，用于swagger多版本支持 
  this.provider = services.BuildServiceProvider().GetRequiredService<IApiVersionDescriptionProvider>();

/// <summary>
 /// 用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/[controller]/[action]")]
 [ApiVersion("2.0")]
 
 public class UserController : ApiController
 {}

/// <summary>
 /// 用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/[controller]/[action]")]
 [ApiVersion("2.0")]
 
 public class UserController : ApiController
 {}

/// <summary>
 /// 用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/v{version:apiVersion}/[controller]/[action]")]
 [Authorize]
 [ApiVersion("1.0")]
 [ApiVersion("2.0")]
 public class UserController : ApiController
 {}

/// <summary>
 /// 用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/v{version:apiVersion}/[controller]/[action]")]
 //[Authorize]
 [ApiVersion("1.0")]
 [ApiVersion("2.0")]
 public class UserController : ApiController
 {}

/// <summary>
 /// v1.用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/v{version:apiVersion}/[controller]/[action]")]
 //[Authorize]
 [ApiVersion("1.0")]
 [ApiVersion("2.0")]
 public class UserController : ApiController
 {}

/// <summary>
 /// v1.用户管理API
 /// </summary>
 [ServiceFilter(typeof(LogFilterAttribute))]
 [ApiController]
 [Route("api/v{version:apiVersion}/[controller]/[action]")]
 //[Authorize]
 [ApiVersion("2.0")]
 public class UserController : ApiController
 {}

/// <summary>
 /// 获取用户列表
 /// </summary>
 /// <returns></returns>
 [HttpGet,MapToApiVersion("1.0")]
 public NetResponse<List<User>> GetList()
 {}

foreach (var description in provider.ApiVersionDescriptions)
  {
   services.AddSwaggerDocument(document =>
  {
   document.OperationProcessors.Add(new OperationSecurityScopeProcessor("JWT token"));
   document.DocumentName = description.GroupName;
   document.Version = description.GroupName;
   document.ApiGroupNames = new string[] { description.GroupName };
   //jwt 认证
   document.AddSecurity("JWT token", Enumerable.Empty<string>(),
    new OpenApiSecurityScheme()
    {
    Type = OpenApiSecuritySchemeType.ApiKey,
    Name = nameof(Authorization),
    In = OpenApiSecurityApiKeyLocation.Header,
    Description = "将token值复制到如下格式: \nBearer {token}"
    }
   );

  });
  }

app.UseOpenApi();
  app.UseSwaggerUi3(setting =>
  {
  });