Angular2应用程序中的异常

Question

I am getting this exception in console:

Error in ./AppComponent class AppComponent - inline template:0:32 caused by: No provider for Http!

Why should I provide HTTP providers in app component?

Answer 1

Make sure you have the following code in your App Module or whichever module declares AppComponent :

import { HttpModule } from '@angular/http';

@NgModule({
    // ...
    imports: [
        // ...
        HttpModule
    ]
    // ...
})
export class AppModule {}

For an example, see this page from Angular's tutorial.