spring注解形式的IOC与DI

注意，还要配置才能获得下面要用到的提示

配置文件applicationContext.xml如下：

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



<!-- 配置注解驱动与包扫描
        context:component-scan:组件扫描 -->
           <context:component-scan base-package="cn.java.annotation.ioc1"></context:component-scan>
          
</beans>

package cn.java.annotation.ioc1;

import org.springframework.stereotype.Component;

@Component("ya")
public class Duck {
	
	private String duckName="唐老鸭";
	private Integer age=20;
	public String getDuckName() {
		return duckName;
		
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	public void setDuckName(String duckName) {
		this.duckName = duckName;
	}

}

package cn.java.annotation.ioc1;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
//@Component(value="smallJi")相当于在配置文件创建一个id为smallJi的bean对象，在springMVC中可以直接写成Component
@Component(value="smallJi")//可以直接写成：@Component("smallJi")
@Scope(value="singleton")//相当于创建一个bean而且是单例。@Scope("singleton")
public class Ji {
	//@Resource(name="ya")  将Duck的属性赋给Ji
	@Autowired//可以直接这样写，可以直接找到Duck属性并赋给Ji
	private Duck duck;
	
	public void behavior() {
		System.out.println("打鸣="+duck);
		
	}

}

调用结果：