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);
        }
   
    }