spring笔记7---使用模板bean来为其他bean提供属性值

1 新建类User：

package com.gm.spring_test;

public class User {
private int age;
private String name;

@Override
public String toString() {
return "User [name = " + name + ", age = " + age + "]";
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}


2 修改配置文件spring-conf.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" xmlns:p="http://www.springframework.org/schema/p" >

<bean abstract="true" id="UserTemplate" p:age="20" p:name="gongmin"></bean>

<bean id="User" class="com.gm.spring_test.User" parent="UserTemplate">
</bean>
</beans>



注意： abstract设置为true的bean为模板bean，可以用来为其他bean提供属性值。

3 使用bean：

ApplicationContext context = new ClassPathXmlApplicationContext("spring-conf.xml");
User user = (User) context.getBean("User");
System.out.println(user);