maven 기초 (1)

maven repository

https://mvnrepository.com

pom.xml version 관리

	<properties>
		<org.springframewor-version>5.2.22.RELEASE</org.springframewor-version>
	</properties>
	<dependencies>
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
		<dependency>
			<!--library-->
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframewor-version}</version>
		</dependency>

com.java.www

package com.java.www;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;

public class MainClass {
	public static void main(String[] args) {
		//HelloWorldEn hello1=new HelloWorldEn();
		//bean 호출법
		
		AbstractApplicationContext ctx= new GenericXmlApplicationContext("classpath:beans.xml");
		
		Hello hello1=ctx.getBean("hello1",Hello.class);
        //Hello.class<-interface 인가요?
		callMethod(hello1);
        
        //<bean id="hello1" class="com.java.www.HelloWorldGem"/>
        
        //public interface Hello {public void sayHello();}
	
	



</beans>
	}
	
	
	public static void callMethod(Hello helloVo) {
		helloVo.sayHello();
	}

}

---

package com.java.www;

public interface Hello {
	
	public void sayHello();

}

---

package com.java.www;

public class HelloWorldKo implements Hello {
	
	public void sayHello() {
		System.out.println("한국어: 안녕");
	}


}

------------------------------------------------------
package com.java.www;

public class HelloWorldEn implements Hello {
	
	public void sayHello() {
		System.out.println("English:hello!");
	}

}

<?xml version="1.0" encoding="UTF-8"?>
<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">

<!-- HelloWorldEn hello1 = new HelloWorldEn();  / 위치점 - copyqualifiedName-->
<bean id="hello1" class="com.java.www.HelloWorldGem"/>

</beans>