Spring中继承配置的注入方法

（1）两个java类。一个父类一个字类

package com.lc.inherit;

/*
 * 这里是父类
 */
public class Student {

	protected String name;
	protected int age;
	public String getName() {
	//get/set方法
}

package com.lc.inherit;
/**
 * 继承Student类
 * @author xuliugen
 */
public class Gradate extends Student {

	//Gradate自由的属性
	private String degree;
	//get、set方法

}

（3）Spring注入使用的配置文件

<?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:context="http://www.springframework.org/schema/context"
		xmlns:tx="http://www.springframework.org/schema/tx"
		xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
				http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
				http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<!-- 配置一个学生对象 -->
<bean id="student" class="com.lc.inherit.Student">
	<property name="name" value="顺平" />
	<property name="age" value="30"/>
</bean>

<!-- 配置Grdate对象 -->
<bean id="grdate" parent="student" class="com.lc.inherit.Gradate">
	<!-- 假设自己在这里配置属性name,age,则会替换从父对象继承的数据  没有配置的话依照父类-->
	<property name="name" value="小明"/>
	<property name="degree" value="学士"/>
</bean>

</beans>

（4）怎样使用注入的值

package com.lc.inherit;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App1 {

	public static void main(String[] args) {

		ApplicationContext ac=new ClassPathXmlApplicationContext("com/lc/inherit/beans.xml");

		Gradate gradate=(Gradate) ac.getBean("grdate");
		System.out.println(gradate.getName()+" "+gradate.getAge()+" "+gradate.getDegree());
	}

}