(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 }
<?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()); } }
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