1. 在程序中提供需要依赖Spring为其注入属性的属性名和类型
package com.hao947.ioc;
public class UserService {
private String name;
private String year;
public void setName(String name) {
this.name = name;
}
public void setYear(String year) {
this.year = year;
}
public void show() {
System.out.println("show...." + name + "," + year);
}
}
2. 提供该属性的setter方法（标准封装的setter方法）
3. spring中初始化该资源Bean时为其提供资源的值
<?xml version="1.0" encoding="UTF-8"?>
<!-- 整个Spring文件根元素就是beans -->
<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-3.1.xsd">
<!-- 此处及用Bean元素来定义Spring能创建的对象 -->
<bean id="userService" class="com.hao947.ioc.UserService">
<!-- 为该Bean提供资源 -->
<property name="name" value="hao947"></property>
<property name="year" value="2014"></property>
</bean>
</beans>
4.调试
public class IoCApp {
@Test
public void hao947() {
// 获取Bean需要使用Spring的工厂类
ApplicationContext act = new ClassPathXmlApplicationContext(
"applicatioContext.xml");
// 获取Bean
UserService us = (UserService) act.getBean("userService");
// 执行操作
us.show();
System.out.println(us);
}
}