samples/src/main/java/org/apache/hc/client5/migration/examples/HttpClient4Example.java

/*
 * Copyright 2018 OK2 Consulting Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hc.client5.migration.examples;

import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.TimeUnit;

import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.CookieStore;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.config.SocketConfig;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.EntityTemplate;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContexts;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class HttpClient4Example {

    public static void main(String... args) throws Exception {
        CloseableHttpClient client = HttpClients.custom()
                .setSSLSocketFactory(new SSLConnectionSocketFactory(
                        SSLContexts.createSystemDefault(),
                        new String[] { "TLSv1.2" },
                        null,
                        SSLConnectionSocketFactory.getDefaultHostnameVerifier()))
                .setConnectionTimeToLive(1, TimeUnit.MINUTES)
                .setDefaultSocketConfig(SocketConfig.custom()
                        .setSoTimeout(5000)
                        .build())
                .setDefaultRequestConfig(RequestConfig.custom()
                        .setConnectTimeout(5000)
                        .setSocketTimeout(5000)
                        .setCookieSpec(CookieSpecs.STANDARD_STRICT)
                        .build())
                .build();

        CookieStore cookieStore = new BasicCookieStore();
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();

        HttpClientContext clientContext = HttpClientContext.create();
        clientContext.setCookieStore(cookieStore);
        clientContext.setCredentialsProvider(credentialsProvider);
        clientContext.setRequestConfig(RequestConfig.custom()
                .setConnectTimeout(10000)
                .setSocketTimeout(10000)
                .setCookieSpec(CookieSpecs.STANDARD)
                .build());

        JsonFactory jsonFactory = new JsonFactory();
        ObjectMapper objectMapper = new ObjectMapper(jsonFactory);

        HttpPost httpPost = new HttpPost("https://httpbin.org/post");
        List<NameValuePair> requestData = Arrays.asList(
                new BasicNameValuePair("name1", "value1"),
                new BasicNameValuePair("name2", "value2"));

        EntityTemplate requestEntity = new EntityTemplate(outstream -> {
            objectMapper.writeValue(outstream, requestData);
            outstream.flush();

        });
        requestEntity.setContentType(ContentType.APPLICATION_JSON.toString());
        httpPost.setEntity(requestEntity);

        JsonNode responseData = client.execute(httpPost, response -> {
            if (response.getStatusLine().getStatusCode() >= 300) {
                throw new ClientProtocolException(Objects.toString(response.getStatusLine()));
            }
            final HttpEntity responseEntity = response.getEntity();
            if (responseEntity == null) {
                return null;
            }
            try (InputStream inputStream = responseEntity.getContent()) {
                return objectMapper.readTree(inputStream);
            }
        });
        System.out.println(responseData);

        client.close();
    }

}