Spring也是一个开源框架，我在学习Spring的时候，认为最重要的几点是：IOC（控制反转）、AOP（面向切面）和容器概念。

详细的教程还请大家去看网上的视频，这里贴一个小Demo以供学习。

（前提是大家把该导入的jar包都导入了）

1、Student类和Teacher类

public class Student {	private String name;		public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}		public void sayHello() {		System.out.println("Hi," + name);	}}

import java.util.List;public class Teacher {	private List
     
       stuList;	private String name;		public List
      
        getStuList() {		return stuList;	}	public void setStuList(List
       
         stuList) {		this.stuList = stuList;	}	public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}		public void myStu() {		System.out.println(name + " :");		for(int i = 0; i < stuList.size(); i++)			System.out.println(stuList.get(i).getName());	}}
       
      
     

2、配置文件：applicationContext.xml的配置

> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans> <bean id="student_1" class="Student"> <property name="name" value="小明"> </property> </bean> <bean id="student_2" class="Student"> <property name="name" value="小凡"> </property> </bean> <bean id="teacher" class="Teacher"> <property name="name" value="崔老师"/> <property name="stuList"> <list> <ref bean= "student_1"/> <ref bean= "student_2"/> </list> </property> </bean> </beans>

3、主类：main（直接执行就可以）

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class main {	public static void main(String[] args) {		// TODO Auto-generated method stub		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");				Student stu = (Student) ac.getBean("student_1");		stu.sayHello();				Teacher tec = (Teacher) ac.getBean("teacher");		tec.myStu();	}}