spring通过FactoryBean配置Bean的方法

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Car.java

package com.gong.spring.beans.factoryBean; public class Car { private String name; private double price; public String getName() { return name; } public void setName(String name) { this.name = name; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public Car(String name, double price) { super(); this.name = name; this.price = price; } @Override public String toString() { return "Car [name=" + name + ", price=" + price + "]"; } }

CarFactoryBean.java

package com.gong.spring.beans.factoryBean; import org.springframework.beans.factory.FactoryBean; public class CarFactoryBean implements FactoryBean<Car> { private String name; public void setName(String name) { this.name = name; } //返回Bean的对象 @Override public Car getObject() throws Exception { // TODO Auto-generated method stub return new Car(name,200000); } //返回bean的类型 @Override public Class<?> getObjectType() { // TODO Auto-generated method stub return Car.class; } //是否是单例 @Override public boolean isSingleton() { // TODO Auto-generated method stub return true; } }

beans-factoryBean.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="" xmlns:xsi="" xsi:schemaLocation=" "> <bean id="car" class="com.gong.spring.beans.factoryBean.CarFactoryBean"> <property name="name" value="baoma"></property> </bean> </beans>

Main.java

package com.gong.spring.beans.factoryBean; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { public static void main(String[] args) { //1.创建spring的IOC容器对象 ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans-factoryBean.xml"); //2.从容器中获取Bean实例 Car car = (Car) ctx.getBean("car"); System.out.println(car.toString()); ctx.close(); } }

输出：

spring通过FactoryBean配置Bean的方法