httpclient 4.5.1---连接管理器

package com.cycore.dbs.common.util;import org.apache.http.HttpResponse;import org.apache.http.client.config.RequestConfig;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.ConnectionKeepAliveStrategy;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.DefaultConnectionKeepAliveStrategy;import org.apache.http.impl.client.HttpClients;import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;import org.apache.http.protocol.HttpContext;/** * http客户端连接池管理类 * @author xiawq * */public class HCManager {/*** 连接池管理器*/private static PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();/*** Http客户端*/private static CloseableHttpClient client = null;/***请求配置 */private static RequestConfig requestConfig = null;static{connManager.setDefaultMaxPerRoute(20);//为单路由设置默认最大并发连接数为50if(requestConfig == null){requestConfig=RequestConfig.custom().setSocketTimeout(1000).setConnectTimeout(1000).build();}}/*** 自定义连接保持存活策略:如果响应头中有Keep-Alive相关的timeout设置，* 则按Keep-Alive头中的timeout设定存活时间。不然默认为5秒。*/private static ConnectionKeepAliveStrategy connKeepAliveStrategy = new DefaultConnectionKeepAliveStrategy() {@Overridepublic long getKeepAliveDuration(HttpResponse response, HttpContext context) {long keepAlive = super.getKeepAliveDuration(response, context);if(keepAlive == -1){keepAlive = 5*1000;}return keepAlive;}};/*** 获取http客户端* @return*/protected static CloseableHttpClient getClient() {if(client == null){client = HttpClients.custom().setConnectionManager(connManager).setKeepAliveStrategy(connKeepAliveStrategy).build();}return client;}protected static RequestConfig getRequestConfig() {return requestConfig;}}