Spring Boot 4 HTTPクライアント

RestTemplate

getForObject

レスポンスのBodyをString型で取得
String s = new RestTemplate()
　.getForObject("https://office-yone.com", String.class);

getForEntity

レスポンスのBodyをString型で取得
ResponseEntity<String> entity = new RestTemplate()
　.getForEntity("https://office-yone.com", String.class);
HttpStatus status = entity.getStatusCode();
HttpHeaders header = entity.getHeaders();
String s = entity.getBody();

postForEntity

ResponseEntity<String> res = new RestTemplate()
　.postForEntity("https://office-yone.com", "aaa", String.class);
String s = res.getBody();

RestOperations

RestOperations restoperations = new RestTemplateBuilder()
　接続タイムアウト設定
　.setConnectTimeout(30000)
　応答タイムアウト設定
　.setReadTimeout(60000)
　基本認証設定
　.basicAuthorization("user", "pass")
　作成
　.build();
String s = restoperations.getForObject("https://office-yone.com", String.class);