How to send JWT token as authorization header in angular 6
Another solution is to use angular-jwt: https://github.com/auth0/angular2-jwt
No need to create an interceptor just update your AppModule:
import { JwtModule } from "@auth0/angular-jwt";
import { HttpClientModule } from "@angular/common/http";
export function tokenGetter() {
return localStorage.getItem('access_token');
}
@NgModule({
declarations: [
AppComponent
],
imports: [
HttpClientModule,
JwtModule.forRoot({
config: {
tokenGetter: tokenGetter,
allowedDomains: ['localhost:3000', 'example.com'],
disallowedRoutes: ["http://example.com/examplebadroute/"],
authScheme: "Bearer " // Default value
}
})
],
bootstrap: [AppComponent]
})
export class AppModule { }
Any requests sent using Angular's HttpClient will automatically have a token attached as an Authorization header.
The problem with your code is that the HttpHeaders
class is immutable, so when you call append
it actually returns a new instance with the specified value, but does not modify the original object.
Try this
var headers_object = new HttpHeaders().set("Authorization", "Bearer " + t);
Content-Type is set to json by default by HttpClient
If you need to do send a the Authorization token in all your API calls, then it's better to use an interceptor as suggested by Martin
Please create HttpHeaders object like this (instead of appending) ,
var t="eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJodHRwOlwvXC9sb2NhbGhvc3Q6ODAwMFwvYXBpXC9sb2dpbiIsImlhdCI6MTUzNzcxNTMyNSwiZXhwIjoxNTM3NzE4OTI1LCJuYmYiOjE1Mzc3MTUzMjUsImp0aSI6IlBKWVhnSkVyblQ0WjdLTDAiLCJzdWIiOjYsInBydiI6Ijg3ZTBhZjFlZjlmZDE1ODEyZmRlYzk3MTUzYTE0ZTBiMDQ3NTQ2YWEifQ.1vz5lwPlg6orzkBJijsbBNZrnFnUedsGJUs7BUs0tmM";
var headers_object = new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': "Bearer "+t)
});
const httpOptions = {
headers: headers_object
};
this.http.post(
'http://localhost:8000/api/role/Post', {limit:10}, httpOptions
).subscribe(resp => {
this.roles = console.log(resp)
}
);
Add AuthInterceptor
that will intercept all your http requests and add the token to its headers:
import { Injectable } from '@angular/core';
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class AuthInterceptor implements HttpInterceptor {
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const token = localStorage.token; // you probably want to store it in localStorage or something
if (!token) {
return next.handle(req);
}
const req1 = req.clone({
headers: req.headers.set('Authorization', `Bearer ${token}`),
});
return next.handle(req1);
}
}
Then register it in your AppModule
:
@NgModule({
declarations: [...],
imports: [...],
providers: [
{ provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true },
],
bootstrap: [ AppComponent ],
})
export class AppModule { }
More about interceptors:
https://angular.io/guide/http#intercepting-requests-and-responses