私とSpring 3を学んでノート1を学びます

public interface HelloApi {
	public void sayHello();  

}

public class HelloImpl implements HelloApi{

	public void sayHello() {
		System.out.println("Hello World ! ");
	}

}

<?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"
	xsi:schemaLocation="   
	    http://www.springframework.org/schema/beans
	    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd   
	    http://www.springframework.org/schema/context        
	    http://www.springframework.org/schema/context/spring-context-3.0.xsd">

	<!-- id  ，class  -->
	<bean id="hello"
		class="com.HelloImpl"> 
		
	</bean>

</beans>

public class HelloImplTest {

	@Test
	public void testSayHello() {
		//ClassPathXmlApplicationContext: ApplicationContext ， 
		//  classes 
		//1、 Ioc 
		ApplicationContext context = new ClassPathXmlApplicationContext("helloworld.xml");
		//2、 Bean，  “ ， ”
		HelloApi helloApi = context.getBean("hello",HelloApi.class);
		//3、 
		helloApi.sayHello();
		
		//XmlBeanFactory  classpath    ( )
		File file = new File("helloworld.xml");
		Resource resource = new FileSystemResource(file);
		                  // = new ClassPathResource("helloworld.xml");
		BeanFactory beanFactory = new XmlBeanFactory(resource);
		                  //  = new XmlBeanFactory(resource);
		HelloApi helloApi2 = (HelloApi)beanFactory.getBean("hello");
		helloApi2.sayHello();
		
		// FileSystemXmlApplicationContext：ApplicationContext ，
		//  ( )
		BeanFactory beanFactory2 = new FileSystemXmlApplicationContext("helloworld.xml");
		HelloApi helloApi3 = (HelloApi)beanFactory2.getBean("hello");
		helloApi3.sayHello();
	}

}