How to pass JsonWebToken(JWT) through AngularJS - angularjs

Question

I created a Django RESTful API with JWT as authentication method, but unable to pass the token as headers using angularJS.
I think there is no error on my API, since I used the token I acquired by this script and tested it in Postman:
my JWT token authentication script is here:
// Uses http.get() to load data from a single API endpoint
list() {
return this.http.get('api/', this.getHttpOptions());
}
// helper function to build the HTTP headers
getHttpOptions() {
return {
headers: new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': 'JWT ' + this._userService.token
})
};
}
I tried using http.get() here. Thanks in advance!
the error will be like:
401 (Unauthorized)

Answer 1

Try this:
list() {
return this.http.get('api/', { this.getHttpOptions() });
}
getHttpOptions() {
const headers = new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': 'JWT ' + this._userService.token
});
return headers;
}

Answer 2

Same issue on JWT for CakePHP3, and follow header slove it, may it is helpful.
this.http.get('api/', { headers: new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': 'JWT ' + this._userService.token,
'Authenticationtoken': 'JWT ' + this._userService.token
}) });

Answer 3

Thanks guys,
I found the problem is about CORS, My solutions are here, there are two approaches to solve this problem, one is add 'Access-Control-Allow-Origin': '*' to your http request, sometimes you need add more. Another answer is add CORS_ORIGIN_WHITELIST = 'localhost:4200', in your backend.
https://www.youtube.com/watch?v=OIbndrrUYiY