CODE EXAMPLE FOR JAVASCRIPT

angular 13 deploy on tomcat 9

@RestController 
// we allow localhost:4200 for testing purposes 
@CrossOrigin(origins = "http://localhost:4200") 
public class HelloController { 
 
    @RequestMapping(value = "/message", produces = MediaType.APPLICATION_JSON_VALUE) 
    public Map<String, String> index() { 
        return Collections.singletonMap("message", "Greetings from Spring Boot!"); 
    } 
 
}