如何使用工厂方法在Spring中创建SocketConfig类？

Question

我正在使用ApacheCommonsHttpClient 4.3。x和spring3。我正在尝试将connectionpool与其关联的socketconfig实例连接起来。

http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/impl/conn/PoolingHttpClientConnectionManager.html

http://hc.apache.org/httpcomponents-core-ga/httpcore/apidocs/org/apache/http/config/SocketConfig.html?is-external=true

我的代码如下所示：

<bean id="socketConfig" class="org.apache.http.config.SocketConfig" factory-method="custom" init-method="build">
        <property name="soTimeout" value="60000"/>
        <property name="soLinger" value="5" />
</bean>

<bean name="poolingHttpConnectionManager" class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager" depends-on="socketConfig">
        <property name="maxTotal" value="20" />
        <property name="defaultMaxPerRoute" value="20" />
        <property name="defaultSocketConfig" ref="socketConfig" />
</bean>

然而，这是行不通的。用于在PoolghttpClientConnectionManager上设置DefaultSocketConfig（）的实例类型为SocketConfig类型。生成器而不是SocketConfig。

我希望发生的事情如下：

SocketConfig config = SocketConfig.custom()
 .setSoTimeout(60000)
 .setSoLinger(5)
 .build()

因此，我希望socketConfig bean类型应该是socketConfig实例，而不是socketConfig。生成器实例。

根据spring文档，我认为这应该有效。

http://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/htmlsingle/spring-framework-reference.html#beans-工厂类静态工厂方法

我做错什么了吗？或者这在Spring是不受支持的？

Answer 1

我能够通过在Spring做下一个配置来实现它：

<bean id="socketConfig" class="org.apache.http.config.SocketConfig" factory-method="custom">
    <property name="soTimeout" value="1000" />
    <property name="soLinger" value="5" />
</bean>

<bean name="poolingHttpConnectionManager" class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager">
    <property name="maxTotal" value="20" />
    <property name="defaultMaxPerRoute" value="20" />
    <property name="defaultSocketConfig">
        <bean factory-bean="socketConfig" factory-method="build" />
    </property>
</bean>

Answer 2

事实证明，socketconfig构建器实例的设计并不能很好地与spring配合使用。

我必须使用一个Spring beanFactory实现来创建实例。

bean类：

import org.apache.http.config.SocketConfig;
import org.springframework.beans.factory.FactoryBean;

public class SocketConfigFactoryBean implements FactoryBean<SocketConfig> {
    int soLinger;
    int soTimeout;

    public SocketConfig getObject() throws Exception {
        return SocketConfig.custom()
                .setSoLinger(soLinger)
                .setSoTimeout(soTimeout)
                .build();
    }

    public Class<?> getObjectType() {
        return SocketConfig.class;
    }

    public boolean isSingleton() {
        return true;
    }

    public int getSoLinger() {
        return soLinger;
    }

    public void setSoLinger(int soLinger) {
        this.soLinger = soLinger;
    }

    public int getSoTimeout() {
        return soTimeout;
    }

    public void setSoTimeout(int soTimeout) {
        this.soTimeout = soTimeout;
    }
}

bean定义

<bean name="poolingHttpConnectionManager" class="org.apache.http.impl.conn.PoolingHttpClientConnectionManager">
    <property name="maxTotal" value="20" />
    <property name="defaultMaxPerRoute" value="20" />
    <property name="defaultSocketConfig">
        <bean class="org.apache.http.config.SocketConfig" factory-method="custom" init-method="build">
        <bean class="com.ex.spring.beans.factory.SocketConfigFactoryBean">
            <property name="soTimeout" value="60000"/>
            <property name="soLinger" value="5" />
        </bean>
    </property>
</bean>