c# – ASP.NET Web Api身份验证方法

我见过的一个解决方案是使用.NET的 HttpApplicationState类并在appstate中存储令牌;这样你就不会直接搞乱Session(这将是一个REST反模式),但你仍然可以跟踪所有当前登录的用户,并在应用程序中使用HttpContext / HttpActionContext来x-ref活动标记.使用HttpActionContext的好处是它是线程安全的,而HttpContext不是,所以你可以锁定appstate,弄乱单个请求的HttpContext,然后解锁appstate以允许其他线程进入.

由于锁定/解锁appstate会占用应用程序,我不确定这个解决方案的扩展程度如何,但无论如何它都在这里. . .

概要：
当用户首次登录时,为他/她生成令牌并存储在appstate中.然后,您可以使用自定义属性标记需要身份验证的任何API调用(或需要存储在该用户上的其他信息),该属性在appstate中检查该令牌,并在API调用中将令牌名称作为标头发送(例如“{token” -name：TOKEN}“).

这是一个简短的例子：

[在控制器方法中首次在登录时激活：]

CustomUserObject user = new CustomUserObject();

//store user props

string token = Guid.NewGuid().ToString();

//create AppState instance,mine's called _appState
//...
_appState.Lock();
_appState[token] = user;
_appState.UnLock();
//...

[然后在global.asax：]

public class CustomAuthorize : System.Web.Http.AuthorizeAttribute
{
    HttpRequestMessage request = actionContext.ControllerContext.Request;
    string token = string.Empty;

    if (request.Headers.GetValues("token-name") != null)
    {
        token = request.Headers.GetValues("token-name").FirstOrDefault().ToString();

        IAppStateService appService; //<--- I've created a custom service tier class for appstate stuff

        //Get appState instance,however makes sense for you.
        //I'm using repo pattern with UnitOfWork,so mine looks like this...
        //"IContainer ioc = DependencyResolution.IoC.Initialize();"
        //"IAppStateService appService = ioc.GetInstance<IAppStateService>();"
        appService.SetHttpApplicationState(HttpContext.Current.Application);

        bool isAuthorized = appService.CheckTokenAndDoStuff(token);

        //inside that method ^^^ you'll do stuff like
        //"_appState.Lock();"
        //"if (_appState[token] == null) return false" (or whatever)
        //"_appState.Unlock();"
    }

    if (isAuthorized)
    {
        HttpResponseMessage resp = request.CreateResponse(HttpStatusCode.OK);

        resp.Headers.Add("AuthenticationToken",token);
        resp.Headers.Add("WWW-Authenticate","Basic");
        resp.Headers.Add("AuthenticationStatus","Authorized");
    }

    return isAuthorized;
}

[然后在webapi]

[HttpPost]
[CustomAuthorize]
public HttpResponseMessage NameOfMethod(...)...

…那应该为你的appstate检查你的用户令牌.只需确保在您的请求标头中包含您的令牌,并确保在您的响应标头中包含Basic Auth信息.