IOC注解版

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="
		http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">

    <!--通过注解依赖注入-->
    <context:annotation-config></context:annotation-config>

    <!--自动扫描包-->
    <context:component-scan base-package="com.bh"></context:component-scan>
</beans>

package com.bh.service;

import org.springframework.stereotype.Service;

@Service
public class DeptService3 {
    public void test(){
        System.out.println("DeptService3 start=========");
        System.out.println("DeptService3 end=========");
    }
}

package com.bh.controller;

import com.bh.service.DeptService3;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

@Controller
//@Controller(value = "deptcontroller")//可以定义一个id
public class DeptController {
    @Autowired
    DeptService3 deptService3;
    public void test(){
        System.out.println("controller start====");
          deptService3.test();
        System.out.println("end start====");
    }
}

package com.bh.test;

import com.bh.controller.DeptController;
import com.bh.dao.StudentDAO;
import com.bh.service.DeptService3;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test3 {
    public static void main(String[] args) {
        System.out.println("start=======");
        ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("applicationAutoContext.xml");
        DeptController bean = ac.getBean(DeptController.class);
        bean.test();

        //获取controller层注解定义的id(一般不用)
       // DeptController deptcontroller = (DeptController) ac.getBean("deptcontroller");
        //deptcontroller.test();

        DeptService3 bean = ac.getBean(DeptService3.class);
        bean.test();

        StudentDAO bean = ac.getBean(StudentDAO.class);
        bean.test();
        System.out.println("end=======");
    }
}