Angular 8 - URL 使用 routerLink 加载，但在 LOCALHOST 的浏览器中直接访问时不显示

Question

I have developed the Angular 8 application and I am using the routerLink to navigate the components which work fine without any issue but when I enter the same URL directly in the browser it doesn't show anything and in the console, I am seeing the errors as below

For Example, I open the homepage http://localhost:4200/home and I have added the routerLink here to go to http://localhost:4200/about and I will be able to view successfully but if I enter the URL http://localhost:4200/about directly in the ULR nothing shows

I have taken care of the app-routing.model.ts

const routes: Routes =
    [
        { path: 'home', component: HomeComponent },
        { path: 'about', component: AboutComponent },
        { path: '**', redirectTo: '/home', pathMatch: 'full' }
    ];
    @NgModule({
    imports: [RouterModule.forRoot(routes)],
    exports: [RouterModule]
})

And I have header.component.ts to handle the navigation bar so I have added the <router-outlet></router-outlet> in the header.component.html and then I have included the selector of header.component.ts in app.component.ts <app-header></app-header> and then in finally index.html I have included the selector of app.component.ts ie <app-root></app-root>

Can you please tell me if there is something wrong.

Before asking this question I have gone through below and nothing helps

1. RouterLink does not work
2. Angular 2 Routing Does Not Work When Deployed to Http Server
3. Angular2 routing - url doesn't change and page doesn't load

Answer 1

On server we can use hashStrategy for routing.

In routing file just replace RouterModule.forRoot(routes) to RouterModule.forRoot(routes,{useHash : true}) .

Answer 2

for apache server you can add .htaccess file

 RewriteEngine On # If an existing asset or directory is requested go to it as it is RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -f [OR] RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -d RewriteRule ^ - [L] # If the requested resource doesn't exist, use index.html RewriteRule ^ /index.html

We have to make sure that inside index.html base href is

Answer 3

这可能有点奇怪，但我在cssclass="class class2 " 中有一个尾随空格