ClientClassicOverAsync.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.hc.client5.http.examples;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.core5.annotation.Experimental;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.util.Timeout;

/**
 * This example demonstrates create an {@link CloseableHttpClient} adaptor over
 * {@link CloseableHttpAsyncClient} providing compatibility with the classic APIs
 * based on the {@link java.io.InputStream} / {@link java.io.OutputStream} model
 */
@Experimental
public class ClientClassicOverAsync {

    public static void main(final String[] args) throws Exception {
        try (final CloseableHttpClient httpclient = HttpAsyncClients.classic(
                HttpAsyncClients.createDefault(),
                Timeout.ofMinutes(1))) {
            final HttpGet httpget = new HttpGet("http://httpbin.org/get");
            System.out.println("Executing request " + httpget.getMethod() + " " + httpget.getUri());
            httpclient.execute(httpget, response -> {
                System.out.println("----------------------------------------");
                System.out.println(httpget + "->" + new StatusLine(response));
                final HttpEntity entity = response.getEntity();
                if (entity != null) {
                    final ContentType contentType = ContentType.parseLenient(entity.getContentType());
                    final Charset charset = ContentType.getCharset(contentType, StandardCharsets.UTF_8);
                    try (BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), charset))) {
                        String line;
                        while ((line = reader.readLine()) != null) {
                            System.out.println(line);
                        }
                    }
                }
                return null;
            });
        }
    }

}