RestTemplate GET request with request param - spring

Question

I use RestTemplate for GET Request with requestParam as :
final String Url = "http://localhost:8080/player/{nickname}";
final Map<String, String> nickname = new HashMap<String, String>();
nickname.put("nickname", score.getPlayer());
String Uri = "http://localhost:8081/game/{code}";
final Map<String, String> code = new HashMap<String, String>();
code.put("code", score.getGamecode());
Player player = restTemplate.getForObject(Url, Player.class, nickname);
Game game = restTemplate.getForObject(Uri, Game.class, code);
but I have an error
Connection refused
in the console
and error:
"I/O error on GET request for \"http://localhost:8080/player/sahar1\": Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect"
in the Postman
could you help me how can I send GET request with requestParam?
the POST method:
#PostMapping
public ResponseEntity<?> createScore(#RequestBody #JsonView(Views.class) #Valid Score score) {
final String Url = "http://localhost:8080/player?nickname={nickname}";
final Map<String, String> nickname = new HashMap<String, String>();
nickname.put("nickname", score.getPlayer());
String Uri = "http://localhost:8081/game?code={code}";
final Map<String, String> code = new HashMap<String, String>();
code.put("code", score.getGamecode());
Player player = restTemplate.getForObject("http://localhost:8080/player/" + nickname, Player.class);
Game game = restTemplate.getForObject(Uri, Game.class, code);
if ((repo.findByScoreid(score.getScoreid())) == null) {
if((player!= null) && (game!=null)) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("score", score.getScore());
map.put("date", score.getDate());
m = null;
m.add(map);
score.setHistory(m);
repo.save(score);
return ResponseEntity.status(201).body("Created!");
}
else return ResponseEntity.status(400).body("Bad Request!");
}
else
return ResponseEntity.status(409).body("Conflict!");
}
}