RestTemplateConfig

import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

/**
 * http请求工厂类配置
 *
 * @author
 */
@Configuration
public class RestTemplateConfig {

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate(httpRequestFactory());
    }

    @Bean
    public ClientHttpRequestFactory httpRequestFactory() {
        return new HttpComponentsClientHttpRequestFactory(httpClient());
    }

    @Bean
    public HttpClient httpClient() {
        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.getSocketFactory())
                .register("https", SSLConnectionSocketFactory.getSocketFactory())
                .build();
        PoolingHttpClientConnectionManager poolingHttpClientConnectionManager = new PoolingHttpClientConnectionManager(registry);
        //最大连接数
        poolingHttpClientConnectionManager.setMaxTotal(200);
        //最大路由数
        poolingHttpClientConnectionManager.setDefaultMaxPerRoute(100);
        //定义不活动的时间
        poolingHttpClientConnectionManager.setValidateAfterInactivity(2000);
        RequestConfig requestConfig = RequestConfig.custom()
                //服务器返回数据的时间，超时抛出read timeout
                .setSocketTimeout(65000)
                //连接上服务器的时间，超时抛出connect timeout
                .setConnectTimeout(5000)
                //从连接池中获取的超时时间，超时未拿到连接会报错ConnectionTimeoutException:Timeout waiting for connection from pool
                .setConnectionRequestTimeout(1000)
                .build();
        return HttpClientBuilder.create()
                .setDefaultRequestConfig(requestConfig)
                .setConnectionManager(poolingHttpClientConnectionManager)
                .build();
    }

}

CPU为4C8G