I have a spring boot project for backend, and an angular project for front-end. I am not able to get the response from backend to front-end through ingress. The backend service is running on port- 8000 and front-end service is running on the port-80

Both the endpoints- backend(http://localhost:8000/hello) and frontend(http://localhost:80) are accessible individually. I want the angular to interact with backend service through ingress, which is not working

Ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: api-call-app
annotations:
  nginx.ingress.kubernetes.io/rewrite-target: /
  nginx.ingress.kubernetes.io/enable-cors: "true"
  nginx.ingress.kubernetes.io/configuration-snippet: |
       more_set_headers "Access-Control-Allow-Origin: $http_origin";
  nginx.ingress.kubernetes.io/cors-allow-origin: "*"
  nginx.ingress.kubernetes.io/cors-allow-methods: "PUT, GET, POST, OPTIONS, DELETE"
  nginx.ingress.kubernetes.io/cors-allow-credentials: "true"
  nginx.ingress.kubernetes.io/cors-allow-headers: "DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization,X-CSRFToken"
spec:
  rules:
  - host: localhost
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: angular-service
            port:
              number: 80
      - path: /hello
        pathType: Prefix
        backend:
          service:
            name: springboot-service
            port:
              number: 8000

Spring boot code

@CrossOrigin(origins = "*", allowedHeaders = "*")
@RestController
public class HelloController {
	

	@GetMapping(value= "/hello", produces="text/plain")
	public String hello()
	{
		return "hello";
	}
...

Angular code

export class HelloComponent implements OnInit {

  resp: any
  constructor(private http :HttpClient) { }

  ngOnInit(): void {

    let response= this.http.get("/hello", {responseType: 'text'});
  response.subscribe((data)=>this.resp=(data));  

  }


}

The error that I see is-

Access to XMLHttpRequest at 'http://localhost:8000/hello' from origin 'http://localhost' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.