MVC5 Controller构造方法获取User为空解决方法

时间:2023-06-20 15:30:50
用如下方法获取UserId报空引用异常
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:

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());
}
}
}