吴裕雄--天生自然轻量级JAVA EE企业应用开发Struts2Sping4Hibernate整合开发学习笔记：Spring_instanceFactory

<?xml version="1.0" encoding="GBK"?>
<project name="spring" basedir="." default="">
    <property name="src" value="src"/>
    <property name="dest" value="classes"/>

    <path id="classpath">
        <fileset dir="../../lib">
            <include name="**/*.jar"/>
        </fileset>
        <pathelement path="${dest}"/>
    </path>

    <target name="compile" description="Compile all source code">
        <delete dir="${dest}"/>
        <mkdir dir="${dest}"/>
        <copy todir="${dest}">
            <fileset dir="${src}">
                <exclude name="**/*.java"/>
            </fileset>        
        </copy>
        <javac destdir="${dest}" debug="true" includeantruntime="yes"
            deprecation="false" optimize="false" failonerror="true">
            <src path="${src}"/>
            <classpath refid="classpath"/>
            <compilerarg value="-Xlint:deprecation"/>
        </javac>
    </target>

    <target name="run" description="Run the main class" depends="compile">
        <java classname="lee.SpringTest" fork="yes" failonerror="true">
            <classpath refid="classpath"/>
        </java>
    </target>

</project>

<?xml version="1.0" encoding="GBK"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
    <!-- 配置工厂Bean,该Bean负责产生其他Bean实例 -->
    <bean id="personFactory" class="org.crazyit.app.factory.PersonFactory"/>
    <!-- 下面配置驱动Spring调用personFactory Bean的getPerson()方法来创建Bean
    该bean元素包含的constructor-arg元素用于为工厂方法指定参数，
    因此这段配置会驱动Spring以反射方式来执行如下代码：
    PersonFactory pf = container.get("personFactory"); // container代表Spring容器
    chinese = pf.getPerson("chin"); -->
    <bean id="chinese" factory-bean="personFactory" 
        factory-method="getPerson">
        <!-- 配置实例工厂方法的参数 -->
        <constructor-arg value="chin"/>
    </bean>
    <!--  下面配置会驱动Spring以反射方式来执行如下代码：
    PersonFactory pf = container.get("personFactory"); // container代表Spring容器
    american = pf.getPerson("ame"); -->
    <bean id="american" factory-bean="personFactory"
        factory-method="getPerson">
        <constructor-arg value="ame"/>
    </bean>
</beans>

package org.crazyit.app.factory;

import org.crazyit.app.service.*;
import org.crazyit.app.service.impl.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class PersonFactory
{
    // 获得Person实例的实例工厂方法
    // ethnic参数决定返回哪个Person实现类的实例
    public Person getPerson(String ethnic)
    {
        if (ethnic.equalsIgnoreCase("chin"))
        {
            return new Chinese();
        }
        else
        {
            return new American();
        }
    }
}

package org.crazyit.app.service;

/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public interface Person
{
    // 定义一个打招呼的方法
    public String sayHello(String name);
    // 定义一个告别的方法
    public String sayGoodBye(String name);
}

package org.crazyit.app.service.impl;

import org.crazyit.app.service.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class Chinese implements Person
{
    // 实现Person接口必须实现如下两个方法
    public String sayHello(String name)
    {
        return name + "，您好";
    }
    public String sayGoodBye(String name)
    {
        return name + "，下次再见";
    }
}

package org.crazyit.app.service.impl;

import org.crazyit.app.service.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class American implements Person
{
    // 实现Person接口必须实现如下两个方法
    public String sayHello(String name)
    {
        return name + ",Hello!";
    }
    public String sayGoodBye(String name)
    {
        return name + ",Good Bye!";
    }
}

package lee;

import org.springframework.context.*;
import org.springframework.context.support.*;

import org.crazyit.app.service.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class SpringTest
{
    public static void main(String[] args)
    {
        ApplicationContext ctx = new
            ClassPathXmlApplicationContext("beans.xml");
        Person p1 = ctx.getBean("chinese"
            , Person.class);
        System.out.println(p1.sayHello("Mary"));
        System.out.println(p1.sayGoodBye("Mary"));
        Person p2 = ctx.getBean("american"
            , Person.class);
        System.out.println(p2.sayHello("Jack"));
        System.out.println(p2.sayGoodBye("Jack"));
    }
}