1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4         xmlns:aop="http://www.springframework.org/schema/aop" 5         xmlns:tx="http://www.springframework.org/schema/tx" 6         xsi:schemaLocation=" 7             http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd 8             http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd 9             http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">10     11     <!-- 12         lazy-init:true 懒加载，初始ioc化容器的时候，不建立对象13         lazy-init:false(默认) 不懒加载，初始化ioc容器的时候，就讲applicationContext.XML中所有配置的类的对象创建，并建立关系14         scope:prototype每次取对应id的类的对象，都新创建一个15         scope:singleton（默认）类似于单例模式，只要容器初始化一个类对象，以后所有的取用，都是取这一个16       -->17       18       <!-- 通过setter方法，依赖注入对象。控制反转 -->19     <bean id="userDao" class="com.bjsxt.shang.dao.UserDao" lazy-init="default" scope="singleton"></bean>20     <bean id="userAction" class="com.bjsxt.shang.action.UserAcion" lazy-init="default" scope="prototype">21         <property name="userDao" ref="userDao"></property>22     </bean>23     24     25     26 </beans>

 1 package com.bjsxt.shangxiaofei; 2  3 import org.springframework.context.ApplicationContext; 4 import org.springframework.context.support.ClassPathXmlApplicationContext; 5  6 import com.bjsxt.shang.action.UserAcion; 7 import com.bjsxt.shang.dao.UserDao; 8  9 public class Test {10 public static void main(String[] args) {11         12         //官方推荐，建立xml文件，配置程序中对象，和建立对象间关系的是applicationContext.xml13         //平民版的xml是 beans.xml controller.xml dao.xml service.xml14         //获取解析，并依赖注入applicationContext.XML文件的ioc容器15         ApplicationContext acIoc=new ClassPathXmlApplicationContext("applicationContext.xml");16         //ApplicationContext ioc=new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});17     18         19         //获取所有的ioc容器20         //BeanFactory是所有Spring Ioc容器的父接口21         //BeanFactory beanFactory=new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});22         23         UserDao dao=(UserDao) acIoc.getBean("userDao");24         UserDao dao1=(UserDao) acIoc.getBean("userDao");25         //测试IOC容器中生成的对象是不是单例的。26         System.out.println(dao==dao1);27         28         UserAcion userAction=(UserAcion) acIoc.getBean("userAction");29         userAction.test();30     }31 32 33 34 }