import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
/**
 * @return a new jersey client using a multithreaded http client
 */
public WebResource newApiClient() {
  ClientConfig cc = new DefaultClientConfig();
  cc.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, true);
  cc.getProperties().put(ClientConfig.PROPERTY_READ_TIMEOUT, timeout);
  cc.getProperties().put(ClientConfig.PROPERTY_CONNECT_TIMEOUT, timeout);
  cc.getClasses().add(JacksonJsonProvider.class);
  // use custom configured object mapper ignoring unknown properties
  cc.getClasses().add(ObjectMapperContextResolver.class);

  HttpClient http = HttpUtil.newMultithreadedClient(timeout, maxConnections, maxConnections);
  ApacheHttpClient4Handler hch = new ApacheHttpClient4Handler(http, null, false);
  Client client = new ApacheHttpClient4(hch, cc);

  LOG.info("Connecting to GBIF API: {}", url);
  return client.resource(url);
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
private static ApacheHttpClient4 createDefaultJerseyClient(HttpClientConfiguration configuration, MetricRegistry metricRegistry, String serviceName) {
    HttpClient httpClient = new HttpClientBuilder(metricRegistry).using(configuration).build(serviceName);
    ApacheHttpClient4Handler handler = new ApacheHttpClient4Handler(httpClient, null, true);
    ApacheHttpClient4Config config = new DefaultApacheHttpClient4Config();
    config.getSingletons().add(new JacksonMessageBodyProvider(Jackson.newObjectMapper(), _validatorFactory.getValidator()));
    return new ApacheHttpClient4(handler, config);
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
private static ApacheHttpClient4 createDefaultJerseyClient(HttpClientConfiguration configuration, String serviceName, MetricRegistry metricRegistry) {
    HttpClient httpClient = new HttpClientBuilder(metricRegistry).using(configuration).build(serviceName);
    ApacheHttpClient4Handler handler = new ApacheHttpClient4Handler(httpClient, null, true);
    ApacheHttpClient4Config config = new DefaultApacheHttpClient4Config();
    config.getSingletons().add(new JacksonMessageBodyProvider(Jackson.newObjectMapper(), _validatorFactory.getValidator()));
    return new ApacheHttpClient4(handler, config);
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
private static ApacheHttpClient4 createDefaultJerseyClient(HttpClientConfiguration configuration) {
    HttpClient httpClient = new HttpClientBuilder().using(configuration).build();
    ApacheHttpClient4Handler handler = new ApacheHttpClient4Handler(httpClient, null, true);
    ApacheHttpClient4Config config = new DefaultApacheHttpClient4Config();
    // For shading reasons we can't add a Jackson JSON message body provider.  However, our client implementation will
    // handle wrapping all request and response entities using the shaded Jackson so this shouldn't matter.
    return new ApacheHttpClient4(handler, config);
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
static ApacheHttpClient4 createDefaultJerseyClient(HttpClientConfiguration configuration, String serviceName, MetricRegistry metricRegistry) {
    HttpClient httpClient = new HttpClientBuilder(metricRegistry).using(configuration).build(serviceName);
    ApacheHttpClient4Handler handler = new ApacheHttpClient4Handler(httpClient, null, true);
    ApacheHttpClient4Config config = new DefaultApacheHttpClient4Config();
    config.getSingletons().add(new JacksonMessageBodyProvider(Jackson.newObjectMapper(), _validatorFactory.getValidator()));
    return new ApacheHttpClient4(handler, config);
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
public WebServicesClient(ClientConfig config)
{
  if (SecurityUtils.isHadoopWebSecurityEnabled()) {
    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setConnectionManager(connectionManager);
    httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
    httpClientBuilder.setDefaultAuthSchemeRegistry(authRegistry);
    ApacheHttpClient4Handler httpClientHandler = new ApacheHttpClient4Handler(httpClientBuilder.build(), new BasicCookieStore(), false);
    client = new Client(httpClientHandler, config);
  } else {
    client = Client.create(config);
  }
}
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
public DownloadClient(HttpAutomationClient httpAutomationClient) {

        ApacheHttpClient4Handler handler = new ApacheHttpClient4Handler(
                httpAutomationClient.http(), new BasicCookieStore(), false);
        client = new ApacheHttpClient4(handler);

        if (httpAutomationClient.getRequestInterceptor() != null) {
            client.addFilter(httpAutomationClient.getRequestInterceptor());
        }
        apiURL = httpAutomationClient.getBaseUrl();
    }
 

import com.sun.jersey.client.apache4.ApacheHttpClient4Handler; //导入依赖的package包/类
private ApacheHttpClient4Handler buildClientHandler(HttpClient httpClient) {
    return new ApacheHttpClient4Handler(httpClient, null, true);
}