Spring快速入门

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

public class HelloServiceImpl implements HelloService {
　　private String info;
　　public void setInfo(String info) {
　　　　this.info = info;
　　}
　　public void sayHello() {
　　　　System.out.println("Hello Spring..."+info);
　　}
}

<!-- 通过一个<bean>标签设置类的信息,通过id属性为类起个标识. -->
<bean id="userService" class="cn.yzu.spring3.demo1.HelloServiceImpl">
　　<!-- 使用<property>标签注入属性 -->
　　<property name="info" value="你好"/>
</bean>

@Test
// Spring开发
public void demo2() {
　　// 创建一个工厂类.
　　ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
　　HelloService helloService = (HelloService) applicationContext.getBean("userService");
　　helloService.sayHello();
}

@Test
public void demo4(){
　　// ClassPathResource FileSystemResource
　　BeanFactory beanFactory = new XmlBeanFactory(new FileSystemResource("applicationContext.xml"));
　　HelloService helloService = (HelloService) beanFactory.getBean("userService");
　　helloService.sayHello();
}