Spring中的继承与依赖关系

1：beans-relation.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"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:util="http://www.springframework.org/schema/util"

xmlns:p="http://www.springframework.org/schema/p"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

<bean id="address" class="com.autowire.Address"

p:city="Beijing" p:street="书香路"></bean>

<bean id="address1" class="com.autowire.Address"

p:city="Beijing" p:street="都水路"></bean>

<bean id="car" class="com.autowire.Car"

p:brand="Audi" p:price="50000"></bean>

<bean id="address2" class="com.autowire.Address"

p:street="求知路" parent="address"></bean>

<!-- 要求在配置Person时,必须拥有一个关联的car(Person依赖于Car)Car必须在Person执行之前配置好bean-->

<bean id="person" class="com.autowire.Person"

p:name="Tom" p:address-ref="address2" depends-on="car"></bean>

</beans>

2:Main

package com.relation;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.autowire.Address;

import com.autowire.Person;

public class Main {

public static void main(String[] args) {

ApplicationContext ctx=new ClassPathXmlApplicationContext("beans-relation.xml");

//2:从IOC容器中获取Bean实例

Address address=(Address)ctx.getBean("address");

System.out.println(address);

Address address1=(Address)ctx.getBean("address1");

System.out.println(address1);

Address address2=(Address)ctx.getBean("address2");

System.out.println(address2);

Person person=(Person)ctx.getBean("person");

System.out.println(person);

}

}