HttpClient Deepdive

public void get(String uri, String param) throws Exception {
    String uriWithParam = uri+"?"+param;
    HttpClient client = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(uriWithParam))
            .build();

    HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
    System.out.println("Sync status code: "+ response.statusCode());
}

public void getAsync(String uri, String param) {
    String uriWithParam = uri+"?"+param;
    HttpClient client = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(uriWithParam))
            .build();

    client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
            .thenApply(HttpResponse::statusCode)
            .thenAccept(statusCode -> System.out.println("Async status code: " + statusCode))
            .join();
}

public void post(String uri, String data) throws Exception {
    HttpClient client = HttpClient.newBuilder().build();
    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(uri))
            .POST(HttpRequest.BodyPublishers.ofString(data))
            .build();

    HttpResponse<?> response = client.send(request, HttpResponse.BodyHandlers.discarding());
    System.out.println("Post status code: " + response.statusCode());
}

public static void main(String[] args) {
    HttpClientExample httpClientExample = new HttpClientExample();
    String requestUrl = "https://nid.naver.com/oauth2.0/authorize";
    String redirectUrl = "https://4d4cat.site/login/naver/callback";
    String clientKey = "네이버키값";

    NaverLoginRequest requestParam = new NaverLoginRequest("code", clientKey, redirectUrl, "state");
    try {
        httpClientExample.get(requestUrl, requestParam.toString());
        httpClientExample.getAsync(requestUrl, requestParam.toString());
        httpClientExample.post(requestUrl, requestParam.toString());
    } catch (Exception e) {
        e.printStackTrace();
    }
}