spring之通过实例工厂方法配置Bean

概述Car.java package com.gong.spring.beans.factory; public class Car { private String name; private doub

Car.java

package com.gong.spring.beans.factory;public class Car {    private String name;    private double price;    public String getname() {        return name;    }    voID setname(String name) {        this.name = getPrice() {         price;    }    voID setPrice( price) {        this.price =public Car(String name,super();         name;         price;    }    @OverrIDe     String toString() {        return "Car [name=" + name + ",price=" + price + "]";    }    }

InstanceFactory.java

import java.util.HashMap; java.util.Map;//实例工厂方法，先要创建工厂方法本身，再调用工厂的实例方法返回Bean的实例 InstanceFactory {    private Map<String,Car> cars = null;     InstanceFactory() {        cars = new HashMap<String,Car>();        cars.put("baoma",1)">new Car("baoma",200000));        cars.put("benchi",1)">new Car("benchi",300000));    }     Car getCar(String name) {         cars.get(name);    }}

beans-factory.xml

<?xml version="1.0" enCoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">        <!-- 配置工厂的实例 -->    bean ID="carFactory" class="com.gong.spring.beans.factory.InstanceFactory"></bean>     通过实例工厂方法配置Bean ="car" factory-bean factory-method="getCar">        constructor-arg value="baoma"constructor-arg</>beans>

Main.java

 org.springframework.context.support.ClasspathXmlApplicationContext; Main {    static  main(String[] args) {        1.创建spring的IOC容器对象        ClasspathXmlApplicationContext ctx = new ClasspathXmlApplicationContext("beans-factory.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：

总结

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