Spring ioc注解方式获取bean[转]

原文地址：http://liuzhaomin.iteye.com/blog/1097266

    package com.ls.spring.ioc.dummy;  
      
    import org.springframework.stereotype.Component;  
      
    @Component  
    public class B {  
      
        public void put() {  
            System.out.println("B is outing...");  
        }  
          
    }  
      
    package com.ls.spring.ioc.dummy;  
      
    import org.springframework.beans.factory.annotation.Autowired;  
    import org.springframework.stereotype.Component;  
      
    @Component  
    public class A {  
        @Autowired  
        private B b;  
          
        public A() {  
            super();  
        }  
      
        public A(B b) {  
            super();  
            this.b = b;  
        }  
      
        public B getB() {  
            return b;  
        }  
      
        public void setB(B b) {  
            this.b = b;  
        }  
          
    }  

<?xml version="1.0" encoding="GBK"?>
<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:tx="http://www.springframework.org/schema/tx"
        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
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<context:component-scan base-package="com.ls.spring.ioc.dummy"/>

</beans>

    package com.ls.spring.ioc.dummy;  
      
    import org.springframework.context.ApplicationContext;  
    import org.springframework.context.support.ClassPathXmlApplicationContext;  
      
    public class TestBeanFactoryViaScan {  
          
        public static void main(String[] args) {  
            ApplicationContext context = new ClassPathXmlApplicationContext("com/ls/spring/ioc/dummy/ioc-classpath-scan.xml");  
            A a = (A) context.getBean("a");  
            a.getB().put();  
        }  
          
    }