• 高性能RestTemplate连接池封装配置实战

package net.xdclass.config;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.CloseableHttpClient;
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.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;/*** 小滴课堂,愿景：让技术不再难学** @Description* @Author 二当家小D* @Remark 有问题直接联系我，源码-笔记-技术交流群* @Version 1.0**/@Configuration
public class RestTemplateConfig {@Beanpublic RestTemplate restTemplate(ClientHttpRequestFactory requestFactory){return new RestTemplate(requestFactory);}@Beanpublic ClientHttpRequestFactory httpRequestFactory(){return new HttpComponentsClientHttpRequestFactory(httpClient());}@Beanpublic HttpClient httpClient(){Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create().register("http", PlainConnectionSocketFactory.getSocketFactory()).register("https", SSLConnectionSocketFactory.getSocketFactory()).build();PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);//设置连接池最大是500个连接connectionManager.setMaxTotal(500);//MaxPerRoute是对maxtotal的细分，每个主机的并发最大是300，route是指域名connectionManager.setDefaultMaxPerRoute(300);/*** 只请求 xdclass.net,最大并发300** 请求 xdclass.net,最大并发300* 请求 open1024.com,最大并发200*/RequestConfig requestConfig = RequestConfig.custom()//返回数据的超时时间.setSocketTimeout(20000)//连接上服务器的超时时间.setConnectTimeout(10000)//从连接池中获取连接的超时时间.setConnectionRequestTimeout(1000).build();CloseableHttpClient closeableHttpClient = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).setConnectionManager(connectionManager).build();return closeableHttpClient;}}