BeanFactory是一個類工廠，是類的通用工廠。不多說，直接進入BeanFactory的使用:

首先建一個Bean類，Car.java

package com.techman.reflect;

public class Car 
{
	private String brand;
	private String color;
	private int maxSpeed;
	public String getBrand() {
		return brand;
	}
	public void setBrand(String brand) {
		this.brand = brand;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}
	public int getMaxSpeed() {
		return maxSpeed;
	}
	public void setMaxSpeed(int maxSpeed) {
		this.maxSpeed = maxSpeed;
	}
	
	public Car(){
		
	}
	
	public Car(String brand,String color,int maxSpeed){
		this.brand=brand;
		this.color=color;
		this.maxSpeed=maxSpeed;		
	}
	
	public void introduce()
	{
		System.out.println("Brand is "+brand+" Color is "+color+" Max Speed is "+maxSpeed);
	}
}
 

配置一個beans.xml檔案來指明bean的位置。

<?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"
	
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
						http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
						http://www.springframework.org/schema/context 
						http://www.springframework.org/schema/context/spring-context-3.0.xsd">
	<bean id="car1" class="com.techman.reflect.Car" p:brand="寶馬X7" p:color="白色" p:maxSpeed="350"/>						
</beans>
 

然後在類中實現Bean的初始化和呼叫。

BeanFactoryTest.java

package com.techman.resource;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

import com.techman.reflect.Car;

public class BeanFactoryTest 
{
	public static void main(String []args)throws Throwable
	{
		ResourcePatternResolver resolver=new PathMatchingResourcePatternResolver();
		Resource res=resolver.getResource("classpath:com/techman/resource/beans.xml");
		BeanFactory bf=new XmlBeanFactory(res);
		System.out.println("Init BeanFactory.");
		
		Car car=bf.getBean("car1",Car.class);
		
		car.introduce();
		
		System.out.println("Car Bean is ready for use!");
	}
}
 

結果為:

Init BeanFactory.
Brand is 寶馬X7 Color is 白色 Max Speed is 350
Car Bean is ready for use!