angular 4 change home page url and component - node.js

Question

I have an Angular 4 application with login and registration page and then we I have this interface to manage my employees and stuff like that.
I want to launch my application on a specific page which is login page, like:
http://localhost:4200/login
How to make login page appear once Angular is started and the URL contains /login segment in it ?
here is my app.module.ts file:
import { UserService } from './user.service';
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { HttpModule } from '#angular/http';
import { BrowserAnimationsModule } from '#angular/platform-browser/animations';
import { MatButtonModule, MatCardModule, MatMenuModule, MatToolbarModule, MatIconModule, MatInputModule,MatAutocompleteModule } from '#angular/material';
import { MatFormFieldModule } from '#angular/material';
import { FormsModule, ReactiveFormsModule } from '#angular/forms';
import { AppComponent } from './app.component';
import { UserComponent } from './user/user.component';
import { RouterModule } from '#angular/router';
import { HomeComponent } from './home/home.component';
import { LoginComponent } from './login/login.component';
// Define the routes
#NgModule({
declarations: [
AppComponent,
UserComponent,
HomeComponent,
LoginComponent
],
imports: [
BrowserModule,
FormsModule,
ReactiveFormsModule,
HttpModule ,
RouterModule.forRoot([
{
path: 'home',
component: HomeComponent
},
{
path: 'users',
component: UserComponent
}
{
path: 'login',
component: LoginComponent
}
]),
BrowserAnimationsModule,
MatButtonModule,
MatCardModule,
MatMenuModule,
MatToolbarModule,
MatIconModule,
MatInputModule,
MatFormFieldModule,
MatAutocompleteModule
],
providers: [UserService],
bootstrap: [AppComponent]
})
export class AppModule { }

Answer 1

Use Empty-path route configurations
Add
{path: '' , redirectTo:'/login',pathMatch:'full'} to your routes.

Answer 2

Try this in to your routes
{ path: '**', redirectTo: '/login', pathMatch: 'full' }