Apakah klien HTTP/2 dalam Java 9?

Http/2 Client APIDiperkenalkan di Java 9. Ia mempunyai lebih banyak peningkatan prestasi daripada Http/1.1 dan turut menyokong acara tolak sebelah pelayan . Ini menjadikan tapak cekap dan lebih pantas untuk menyemak imbas. Http/2 Client ialah modul inkubator bernama jdk.incubator.httpclient, yang bermaksud bahawa semua ciri belum dimuktamadkan lagi dan perubahan baharu mungkin Muncul dalam versi masa hadapan java. Ia mengeksport pakej jdk.incubator.http yang mengandungi semua API awam.

Untuk menggunakan Http/2 client , kita perlu menggunakan modul inkubator , kita hanya menggunakan “–tambah - modules" arahan melepasi httpclient modul ke dalam JShell seperti ditunjukkan di bawah

<strong>C:\>jshell -v --add-modules jdk.incubator.httpclient
| Welcome to JShell -- Version 9.0.4
| For an introduction type: /help intro</strong>

Contoh

<strong>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</strong>
<strong>
jshell> System.out.println(httpResponse.body());
Apache HTTP Server Test Page powered by CentOS
Testing 123..
<p class="lead">This page is used to test the proper operation of the Apache HTTP server after it has been insta
lled. If you can read this page it means that this site is working properly. Thi
s server is powered by CentOS.</p><p class="lead">The website you just visited is either experiencing problems or is undergoing routine maintenance.</p>If you would like to let the administrators of this website know that you&#39;ve seen this page instead of the page you expected, you should send them e-mail. In general, mail sent to the name "webmast
er" and directed to the website&#39;s domain should reach the appropriate person.For example, if you experienced problems while visiting www.example.com, you should send e-mail to "webmaster@example
.com".
Are you the Administrator?
<p>You should add your website content to the directory /var/www/html/.</p><p>To prevent this page from ever being used, follow the instructions in the file /etc/httpd/conf.d/welcome.conf.</p>Promoting Apache and CentOS
</strong><p><strong>You are free to use the images below
on Apache and CentOS Linux powered HTTP servers. Thanks for using Apache and CentOS!</strong></p>

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