用如下方法获取UserId报空引用异常
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public class BaseController : Controller{ protected SiteContext db = new SiteContext(); protected Guid userId; public BaseController() { userId = Guid.Parse(User.Identity.GetUserId()); }} |
由于Controller未初始化完成，User为空，重写初始化方法，在初始化(base.Initialize(requestContext);)完成的时候再去获取User即可
解决方法：
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public class BaseController : Controller{ protected SiteContext db = new SiteContext(); protected Guid userId; protected override void Initialize(System.Web.Routing.RequestContext requestContext) { base.Initialize(requestContext); if (User.Identity.IsAuthenticated) { userId =Guid.Parse(User.Identity.GetUserId()); } }} |
MVC5 Controller构造方法获取User为空解决方法
原文：http://www.cnblogs.com/lee2011/p/5357025.html