HttpClient.send metodu - HttpClient API

Giriş

GET veya POST için yaratılan HttpRequest nesnesini senkron olarak gönderir.

Cancel

Açıklaması şöyle. Java 20'den sonra Thread.interrupt ile yapılıyor

Since Java 16 it is possible to cancel a request by interrupting the thread that called HttpClient::send or by invoking cancel(true) on the CompletableFuture returned by HttpClient::sendAsync. 

Örnek

Şöyle yaparız. Burada Project Loom kullanılıyor. Aslında HttpClient  değil Virtual Thread iptal ediliyor.

import org.slf4j.LoggerFactory
import java.net.URI
import java.net.http.HttpResponse.BodyHandlers
import java.net.http.{HttpClient, HttpRequest}
import scala.sys.process._

object Run extends App {
  val log = LoggerFactory.getLogger(this.getClass)
  val client = HttpClient.newHttpClient()

  log.info("Starting virtual thread ...")

  val t = Thread.startVirtualThread(() => {
    log.info("Sending ...")
    val r = client.send(
      HttpRequest
          .newBuilder(new URI("http://localhost:8080/wait"))
            .GET().version(HttpClient.Version.HTTP_1_1)
              .build(),
      BodyHandlers.ofString()
    )
    log.info(s"Received, body length: ${r.body().length}")
  })

  Thread.sleep(1000)
  log.info("Interrupting ...")
  t.interrupt()

  log.info("Done.")
}

send metodu

Örnek

Şöyle yaparız

HttpResponse<String> postData(String jsonStr, String endpoint, String accessToken)
throws Exception {
  HttpClient httpClient = HttpClient.newHttpClient();
  HttpRequest httpRequest = HttpRequest.newBuilder()
    .header("Content-Type", "application/json")
    .header("Authorization", "Bearer " + accessToken)
    .uri(URI.create("https://..."))
    .POST(HttpRequest.BodyPublishers.ofString(jsonStr))
    .build();

  HttpResponse<String> httpResponse = httpClient.send(httpRequest,
    HttpResponse.BodyHandlers.ofString());
  return httpResponse;
}