Attempting to attach a JWT web token to my outgoing request, I implemented an interceptor approach. However, after adding the interceptor, I encountered an error message stating "ERROR TypeError: Cannot read property 'length' of undefined". The app functions correctly when the interceptor file is removed. https://i.sstatic.net/PJV4U.png
Here is my interceptor class code:
Here is a simplified version that has proven to work effectively in my application:
public intercept(
req: HttpRequest<any>,
next: HttpHandler
): Observable<HttpEvent<any>> {
req = this.addAuthHeader(req);
}
addAuthHeader(request) {
const r: HttpRequest<any> = request.clone({
headers: new HttpHeaders({
Authorization: 'Bearer ' + this.authService.getToken()
})
});
return r;
}
For further information, you can visit the following links: how-to-add-multiple-headers-in-angular-5-httpinterceptor and interceptor-angular-4-3-set-multiple-headers-on-the-cloned-request
Best regards,
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