spring如何通過FactoryBean配置Bean
阿新 • • 發佈:2020-01-10
這篇文章主要介紹了spring如何通過FactoryBean配置Bean,文中通過示例程式碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下
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的物件 @Override public Car getObject() throws Exception { // TODO Auto-generated method stub return new Car(name,200000); } //返回bean的型別 @Override public Class<?> getObjectType() { // TODO Auto-generated method stub return Car.class; } //是否是單例 @Override public boolean isSingleton() { // TODO Auto-generated method stub return true; } }
beans-factoryBean.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"> <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.建立spring的IOC容器物件 ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans-factoryBean.xml"); //2.從容器中獲取Bean例項 Car car = (Car) ctx.getBean("car"); System.out.println(car.toString()); ctx.close(); } }
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以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。