身份验证（authentication）的责任是识别出http请求者的身份，除此之外尽量不要管其它的事。webapi的authentication我用authentication filter技术去解决。
参考资料：
https://docs.microsoft.com/en-us/aspnet/web-api/overview/security/authentication-filters
法式如下
创建authentication filter在项目里新建文件夹Security，并在此文件夹里创建IdentityBasicAuthentication类，代码如下
using System; using System.Threading; using System.Threading.Tasks; using System.Web.Http.Filters; namespace webapi.Security { public class IdentityBasicAuthentication:IAuthenticationFilter { public bool AllowMultiple { get; } public Task AuthenticateAsync(HttpAuthenticationContext context, CancellationToken cancellationToken) { throw new NotImplementedException(); } public Task ChallengeAsync(HttpAuthenticationChallengeContext context, CancellationToken cancellationToken) { throw new NotImplementedException(); } } }
担任自IauthenticationFilter，实现本身的业务代码（后面再实现）
注册authentication filter在webapi的config里插手filter，，改削项目代码如下
/// <summary> /// 返回webapi的httpconfiguration配置 /// 用于webapi应用于owin技术时使用 /// </summary> /// <returns></returns> public static HttpConfiguration OwinWebApiConfiguration(HttpConfiguration config) { config.MapHttpAttributeRoutes();//开启属性路由 config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); config.Filters.Add(new WebApiExceptionFilterAttribute()); config.Filters.Add(new IdentityBasicAuthentication()); return config; }
即上一句：config.Filters.Add(new IdentityBasicAuthentication());