MVC5 Controller构造方法获取User为空解决方法
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()); } } } |