spring来了-02-HelloWorld

spring的各个版本说明：

　　在3.0以下的版本,源码有spring中相关的所有包[spring功能+依赖包]，如：2.5版本

　　在3.0以上的版本，源码中只有spring的核心功能包[没有依赖包]，如果要用依赖包，需要单独下载！

1. 在spring-framework-3.2.5.RELEASE中,
   • 核心的5个jar包，必需的
     • commons-logging-1.1.3.jar               日志(依赖包)
     • spring-beans-3.2.5.RELEASE.jar        bean节点
     • spring-context-3.2.5.RELEASE.jar      spring上下文节点
     • spring-core-3.2.5.RELEASE.jar 　　    spring核心功能
     • spring-expression-3.2.5.RELEASE.jar  spring表达式相关
2. 核心配置文件：applicationContext.xml，也可以为bean.xml

   <?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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop.xsd
           http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx.xsd">
   
       <bean id="user" class="cn.fuyi.a_helloworld.User"></bean>
   </beans>

3. 测试

   public class App {
   
       @Test
       public void testIOC() {
           Resource resource = new ClassPathResource("cn/fuyi/a_helloworld/ApplicationContext.xml");
           BeanFactory factory = new XmlBeanFactory(resource);
           
           User user = (User) factory.getBean("user");
           System.out.println(user);
       }
       
       
       @Test
       public void testAc() throws Exception {
           ApplicationContext ac = new ClassPathXmlApplicationContext("cn/fuyi/a_helloworld/ApplicationContext.xml");
           
           User user = (User)ac.getBean("user");
           System.out.println(user);
       }
   
   }