工厂方法配置，

bean的配置方式：通过全类名（反射），通过工厂方法（静态工厂方法&实例工厂方法），FactoryBean

静态工厂方法

package com.hous.factory;

import java.util.HashMap;
import java.util.Map;

import com.hous.spring.Car;

public class StaticCarFactory {
	private static Map<String, Car> cars = new HashMap<String, Car>();

	static {
		cars.put("qirui", new Car("qirui", 200000));
		cars.put("hanma", new Car("hanma", 100000));
	}

	/**
	 * 静态工厂方法
	 * 
	 * @param name
	 * @return
	 */
	public static Car getCar(String name) {
		return cars.get(name);
	}

}

 

实例工厂方法

package com.hous.factory;

import java.util.HashMap;
import java.util.Map;

import com.hous.spring.Car;

/**
 * 实例工厂方法需要创建工厂本身，再调用工厂实例方法返回bean实例
 *
 */
public class InstanceCarFactory {
	private Map<String, Car> cars = null;

	public InstanceCarFactory() {
		this.cars = new HashMap<String, Car>();
		cars.put("qirui", new Car("qirui", 200000));
		cars.put("luhu", new Car("luhu", 100000));
	}

	public Car getCar(String brand) {
		return cars.get(brand);
	}

}

 

applicationContext.xml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:util="http://www.springframework.org/schema/util"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
	<!-- 通过静态工厂方法配置Bean，不是工厂方法实例而是Bean的实例 -->
	<!-- 
		class:静态工厂全类名
		factory-method:指向静态工厂类的静态方法
		constructor-arg：传入静态方法中的参数
	 -->
	<bean id="car1" class="com.hous.factory.StaticCarFactory" factory-method="getCar">
		<constructor-arg value="hanma"></constructor-arg>
	</bean>
	
	<!-- 配置工厂实例 -->
	<bean id="carFactory" class="com.hous.factory.InstanceCarFactory"></bean>
	<!-- 通过实例工厂方法配置bean -->
	<bean id="car2" factory-bean="carFactory" factory-method="getCar">
		<constructor-arg value="luhu"></constructor-arg>
	</bean>
</beans>

 

 FactoryBean配置

package com.hous.factory;

import org.springframework.beans.factory.FactoryBean;

import com.hous.spring.Car;

/**
 * 自定义FactoryBean实现接口
 * @author Administrator
 *
 */
public class CarFactoryBean implements FactoryBean<Car> {
	
	private String brand;
	
	public String getBrand() {
		return brand;
	}

	public void setBrand(String brand) {
		this.brand = brand;
	}

	@Override
	public Car getObject() throws Exception {
		return new Car(brand, 5000);
	}

	@Override
	public Class<?> getObjectType() {
		return Car.class;
	}

	@Override
	public boolean isSingleton() {
		return true;
	}

}

 

 

<?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:util="http://www.springframework.org/schema/util"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

	<!-- 
		通过FactoryBean配置bean实例
		class：配置FactoryBean的全类名
		property：指向FactoryBean的属性
		通过FactoryBean的getObject方法返回bean实例
	 -->
	<bean id="car" class="com.hous.factory.CarFactoryBean">
		<property name="brand" value="fute"></property>
	</bean>
	
</beans>