When working on http requests in Angular 6.0, I typically follow this block of code.
https://i.sstatic.net/XsSv9.png
I attempted to incorporate the newer features introduced in Angular 8.0 such as HttpClient, HttpResponse, and HttpHeaders. However, I found that the syntax did not align with what I was accustomed to. Can someone guide me on how to integrate the new syntax from Angular 8.0 into my existing setup?
To properly utilize the @angular/common/http module, make sure to import it in your Angular application like this:
import { HttpClient, HttpHeaders } from '@angular/common/http';
In this context, HTTP corresponds to HttpClient, and Headers corresponds to HttpHeaders.
Avoid using RequestOptions; instead, structure your requests as demonstrated below:
Example:
let headers = new HttpHeaders({
'Content-Type': 'application/json'
});
let options = {
headers: headers
}
this.http.post(URL, param, options)....
For further guidance, consult the official documentation at https://angular.io/guide/http#adding-headers
Remember to include HttpClientModule in your main module setup [https://angular.io/guide/http#setup]
Example:
@NgModule({
imports: [
BrowserModule,
// Import HttpClientModule after BrowserModule.
HttpClientModule,
],
declarations: [
AppComponent,
],
bootstrap: [ AppComponent ]
})
export class AppModule {}
Be certain to import HttpClientModule in your app.module.ts file.
Once you have imported HttpClientModule into the AppModule, you will be able to inject the HttpClient into your application or service.
Remember to import HttpClient from '@angular/common/http'; in your service files.
import { HttpClient, HttpResponse, HttpHeaders } from '@angular/common/http';
Inject the HttpClient instead of using Http in your service, and utilize the instance to make HTTP requests.
post(url: string, value: any) {
const headers = new HttpHeaders().append('X-UDS-USER', sessionStorage.getItem('username'))
.append('token', sessionStorage.getItem('token'));
return this.http.post(url, value, {headers: headers}).map(response: HttpResponse) => {
// perform actions after receiving response
}
}
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