配置高性能的http连接池

<!--配置一个httpClient 连接池 -->
<bean id="poolingHttpClientConnectionManager"
class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager">
<!-- 最大链接数 -->
<property name="maxTotal" value="${http.maxTotal}" />
<!-- 设置每个主机地址的并发数 -->
<property name="defaultMaxPerRoute" value="${http.defaultMaxPerRoute}" />
</bean>
<!-- 生成httpClientBuilder(用于得到httpClient) -->
<bean id="httpClientBuilder" class="org.apache.http.impl.client.HttpClientBuilder">
<!-- 注入连接池 -->
<property name="connectionManager" ref="poolingHttpClientConnectionManager" />
</bean>
<!-- 配置httpClient (通过httpClientBuilder得到httpClient对象，并且要设置httpClient为多利模式) -->
<bean class="org.apache.http.impl.client.CloseableHttpClient"
factory-bean="httpClientBuilder" factory-method="build" scope="prototype"></bean>
<!-- 构造(配置)请求参数 -->
<bean id="requestConfigBuilder" class="org.apache.http.client.config.RequestConfig.Builder">
<!-- 创建连接的最长时间 -->
<property name="connectTimeout" value="${http.connectTimeout}" />
<!-- 从连接池中获取到连接的最长时间 -->
<property name="socketTimeout" value="${http.socketTimeout}" />
<!-- 数据传输的最长时间 -->
<property name="staleConnectionCheckEnabled" value="${http.staleConnectionCheckEnabled}" />
<!-- 提交请求前测试连接是否可用 -->
<property name="connectionRequestTimeout" value="${http.connectionRequestTimeout}" />
</bean>

<bean class="org.apache.http.client.config.RequestConfig"
factory-bean="requestConfigBuilder" factory-method="build"></bean>

<!-- 清理无效链接 -->
<bean class="com.liuzw.common.service.IdleConnectionEvictor">
<constructor-arg index="0" ref="poolingHttpClientConnectionManager" />
</bean>

package com.liuzw.common.service;

import org.apache.http.conn.HttpClientConnectionManager;

/**
* 清理一些无用的链接
* @author schoolBoy 刘志伟
* @data 2015年5月18日 下午1:21:39
*/
public class IdleConnectionEvictor extends Thread {

private final HttpClientConnectionManager connMgr;

private volatile boolean shutdown;

public IdleConnectionEvictor(HttpClientConnectionManager connMgr) {
this.connMgr = connMgr;
this.start();//启动线程
}

@Override
public void run() {
try {
while (!shutdown) {
synchronized (this) {
wait(5000);
// 关闭失效的连接
connMgr.closeExpiredConnections();
}
}
} catch (InterruptedException ex) {
// 结束
}
}
public void shutdown() {
shutdown = true;
synchronized (this) {
notifyAll();
}
}
}

http.maxTotal=200
http.defaultMaxPerRoute=20

http.connectTimeout=1000
http.connectionRequestTimeout=500
http.socketTimeout=10000
http.staleConnectionCheckEnabled=true