Unable to get Response from API in angular

Question

I have created a Rest API in Java with the request Mapping(/value/generate).

System.out.println(value);
        
        
        if(!value.equals(null)){
         return new ResponseEntity(value, HttpStatus.OK);
        }
        return new ResponseEntity(HttpStatus.FORBIDDEN);
            
    }

Value is getting printed in Console when iam call this through postman.

But i need to print this value in my Angular console.

Below is code i have created in angular.

service.ts

generatevalue(): Observable<String> {
return this.http.get('https://localhost:8080/value/generate')

Component.ts

ngOnInit() {
     this.service.generatevalue().subscribe((Response) => {
      console.log(Response)
     
  }
 }

Please let me know where i went wrong.

What does Observable<any> instead of Observable<String> give you? — Enrico
– Enrico, Commented Feb 25, 2022 at 11:11
You'll want to use http for localhost. Angular should still be smart enough to run it successfully nonetheless, but just a tip. Other than that, this could be related to CORS (an issue Postman would not run into). But as others have mentioned, check your console first and see what the actual API response is. — Aldin Bradaric
– Aldin Bradaric, Commented Feb 25, 2022 at 11:28
@Enrico It won't change anything since changing TypeScript types won't change the runtime javascript code. — ShamPooSham
– ShamPooSham, Commented Feb 25, 2022 at 11:39
@enrico Iam getting the desried value.Basicaly the value is nothing but token value.So iam getting that. — harish
– harish, Commented Feb 25, 2022 at 11:42

Yochyo · Accepted Answer · 2022-02-25 11:36:36Z

1

Your url should probably be "http://localhost:8080/value/generate". Did you check your console for errors? It should print an error 404 somewhere.

edited Feb 25, 2022 at 11:36

answered Feb 25, 2022 at 11:05

Yochyo

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5 Comments

harish Over a year ago

Thats Typo error @yochyo.I have edit now

Yochyo Over a year ago

It should probably be http instead of https. For https, you would need a certificate. Can you update your question with the error message you get?

harish Over a year ago

iam not getting any error i just want to print the response in angular console

Yochyo Over a year ago

Try replacing your js code with this this.service.generatevalue().subscribe((Response) => { console.log(Response)}, error =>console.error(error)) it should print an error now

harish Over a year ago

You saved my day Yochyo..!! That error log helped me to find my mistake.Now its working..thanks a lot man..~~

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