简单的httpclient的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

 <!-- 声明一个httpclient的链接池管理器 -->
 <bean id="clientConnectionManager"
  class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager">
  <!-- 设置最大链接数 -->
  <property name="maxTotal" value="${httpclient.maxTotal}" />
  <!-- 设置每一个主机地址的并发数 -->
  <property name="defaultMaxPerRoute" value="${httpclient.defaultMaxPerRoute}" />
 </bean>

 <!-- 建立clientBuilder，用来建立httpclient -->
 <bean id="clientBuilder" class="org.apache.http.impl.client.HttpClientBuilder">
  <!-- 设置链接池管理器 -->
  <property name="connectionManager" ref="clientConnectionManager" />
 </bean>

 <!-- 声明httpclient -->
 <!-- httpclient必须是多例的 -->
 <bean id="httpClient" class="org.apache.http.impl.client.CloseableHttpClient"
  factory-bean="clientBuilder" factory-method="build" scope="prototype" />

 <!-- 声明Builder -->
 <bean id="builder" class="org.apache.http.client.config.RequestConfig.Builder">
  <!-- 建立链接的最长时间 -->
  <property name="connectTimeout" value="${httpclient.connectTimeout}" />
  <!-- 从链接池中获取到链接的最长时间 -->
  <property name="connectionRequestTimeout" value="${httpclient.connectionRequestTimeout}" />
  <!-- 数据传输的最长时间 -->
  <property name="socketTimeout" value="${httpclient.socketTimeout}" />
  <!-- 提交请求前测试链接是否可用 -->
  <property name="staleConnectionCheckEnabled" value="${httpclient.staleConnectionCheckEnabled}" />
 </bean>

 <!-- 构建请求配置信息 -->
 <bean id="requestConfig" class="org.apache.http.client.config.RequestConfig"
  factory-bean="builder" factory-method="build" />

 <!-- 配置清理无效链接 -->
 <bean class="com.taotao.web.evictor.IdleConnectionEvictor"
  init-method="start" destroy-method="shutdown" />

</beans>