你好,我已经发布了我的网站,它是从Visual Studio本地分叉到Azure,现在每当我尝试访问该页面时,我都会得到以下异常。System.NullReferenceException发布到天蓝
[NullReferenceException: Object reference not set to an instance of an object.]
WebApplication1.Logic.RoleActions.AddUserAndRole() +390
WebApplication1.Global.Application_Start(Object sender, EventArgs e) +47
因为它指向Logic.RoleActions和Global.Application_Start,我会在这些代码中发布代码。
RoleActions
namespace WebApplication1.Logic
{
internal class RoleActions
{
internal void AddUserAndRole()
{
// Access the application context and create result variables.
Models.ApplicationDbContext context = new ApplicationDbContext();
IdentityResult IdRoleResult;
IdentityResult IdUserResult;
// Create a RoleStore object by using the ApplicationDbContext object.
// The RoleStore is only allowed to contain IdentityRole objects.
var roleStore = new RoleStore<IdentityRole>(context);
// Create a RoleManager object that is only allowed to contain IdentityRole objects.
// When creating the RoleManager object, you pass in (as a parameter) a new RoleStore object.
var roleMgr = new RoleManager<IdentityRole>(roleStore);
// Then, you create the "canEdit" role if it doesn't already exist.
if (!roleMgr.RoleExists("canEdit"))
{
IdRoleResult = roleMgr.Create(new IdentityRole { Name = "canEdit" });
}
// Create a UserManager object based on the UserStore object and the ApplicationDbContext
// object. Note that you can create new objects and use them as parameters in
// a single line of code, rather than using multiple lines of code, as you did
// for the RoleManager object.
var userMgr = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context));
var appUser = new ApplicationUser
{
UserName = "[email protected]",
Email = "[email protected]"
};
IdUserResult = userMgr.Create(appUser, "Pa$$word1");
// If the new "canEdit" user was successfully created,
// add the "canEdit" user to the "canEdit" role.
if (!userMgr.IsInRole(userMgr.FindByEmail("[email protected]").Id, "canEdit"))
{
IdUserResult = userMgr.AddToRole(userMgr.FindByEmail("[email protected]").Id, "canEdit");
}
if (!userMgr.IsInRole(userMgr.FindByEmail("[email protected]").Id, "canEdit"))
{
IdUserResult = userMgr.AddToRole(userMgr.FindByEmail("[email protected]").Id, "canEdit");
}
}
}
}
和全球
namespace WebApplication1
{
public class Global : HttpApplication
{
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
// Create the custom role and user.
RoleActions roleActions = new RoleActions();
roleActions.AddUserAndRole();
}
}
}
我不明白为什么它本地工作正常,但当公布了一个问题。谢谢
可能重复[什么是一个NullReferenceException,如何解决呢?(http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i -fix-it) –