Infinite redirect loop when issuing a router.navigate with Angular2 Router

问题

Note Edit with relevant code snippets

I have run into an odd issue where I get into a infinite redirect loop when issuing a router.navigate.

Setup

• I use the hash location strategy and the app is used as an Outlook plugin.
• I have three routing rules
  • "" redirect to "/login"
  • "/login" mapped to LoginViewComponent
  • "/foo" mapped to FooViewComponent

• The LoginViewComponent has two behaviours:

  • If the user's identity cannot be verified the user will be prompted for credentials
  • If not redirect is issued to the FooViewComponent

• The redirect is simply issued with the following bit of logic:

this.router.navigate(["foo"])

• The routes are registered as follows:

---

const routes: Routes = [
    {
       path: "",
       redirectTo: "login",
       pathMatch: "full"
    },
    {
        path: "login",
        component: LoginViewComponent
    },
    {
        path: "foo",
        component: FooComponentView
    }
];

@NgModule({
    imports: [RouterModule.forRoot(routes, { useHash: true,  enableTracing: true})],
    exports: [RouterModule]
})
export class AppRoutingModule { }

Problem

• When I issue a redirect in the ngOnInit function of the LoginViewComponent I get into an infinite redirect loop.
• It first navigates to the FooViewComponent but then does a redirect back to the LoginViewComponent.
• As far as I can understand the redirect to the LoginViewComponent can only be made if there is a call to router.navigate([" "]) or router.navigate(["login"]). However, neither of these navigate commands are present in the FooViewComponent.

来源：https://stackoverflow.com/questions/44719730/infinite-redirect-loop-when-issuing-a-router-navigate-with-angular2-router