Http/2 클라이언트 API Java 9에 도입되었습니다. Http/1.1 보다 성능이 더 향상되었습니다. 서버 측 푸시 이벤트도 지원합니다. . 이렇게 하면 웹사이트가 효율적 및 빠른 탐색합니다. Http/2 클라이언트 jdk.incubator.httpclient라는 인큐베이터 모듈입니다. , 이는 모든 기능이 아직 완료되지 않았으며 Java의 향후 버전에 새로운 변경 사항이 있을 수 있음을 의미합니다. jdk.incubator.http를 내보냅니다. 모든 공개 API를 포함하는 패키지.
Http/2 클라이언트를 사용하려면 , 인큐베이터 모듈을 사용해야 합니다. , 우리는 단순히 httpclient 모듈 "–add-modules" 를 사용하여 JShell로 아래와 같이 명령
C:\>jshell -v --add-modules jdk.incubator.httpclient | Welcome to JShell -- Version 9.0.4 | For an introduction type: /help intro
예시
jshell> import jdk.incubator.http.*;
jshell> HttpClient httpClient = HttpClient.newHttpClient();
httpClient ==> jdk.incubator.http.HttpClientImpl@534df152
| created variable httpClient : HttpClient
jshell> HttpRequest httpRequest = HttpRequest.newBuilder().uri(new URI("https: //www.google.com")).GET().build();
httpRequest ==> https://www.google.com GET
| created variable httpRequest : HttpRequest
jshell> HttpResponse httpResponse = httpClient.send(httpRequest, HttpResponse.BodyHandler.asString());
httpResponse ==> jdk.incubator.http.HttpResponseImpl@609cd4d8
| created variable httpResponse : HttpResponse
jshell> System.out.println(httpResponse.statusCode());
403
jshell> System.out.println(httpResponse.body());
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