57. 스프링으로 MVC패턴 만들기

프로젝트를 셋팅한 뒤 pakage를 만든다

customer.domain : Customer.java

customer.main : CustomerRun.java

customer.Service :CustomerServide 인터페이스

ServiceLogic

customer.store : CustomerStore 인터페이스

StoreLogic

Customer

package org.kh.customer.domain;

public class Customer {
	private String id;
	private String name;
	private String address;
	private String email;
	
	public Customer() {}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	@Override
	public String toString() {
		return "Customer [id=" + id + ", name=" + name + ", address=" + address + ", email=" + email + "]";
	}
	
	

}

Run

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

public class CustomerRun {
	
	public static void main(String[] args) {
		ApplicationContext ctx = new GenericXmlApplicationContext("");
	}

}

Service

인터페이스

public interface CustomerService {
	
	public List<Customer> findA11();

}

Logic

public class CustomerServiceImple implements CustomerService{
	//private CustomerStoreLogic cStore //현재 강한결합상태 해소하기 위해 인터페이스로 바꾼다
	private CustomerStore cStore; 
	
	
	public void setStore(CustomerStore cStore) {
		this.cStore = cStore;
	}//이게 DI를 만들기 위해 만든 setter
	
	
	
	//인터페이스로 선언하여 강한결합을 해소할수있다.
	//강한결합을 해소하지 않으면 CustomerStoreLogic이 변화될때마다 고쳐줘야함
	//유지보수의 편리성
	//결합을 해소하는 방법 DI 의존성 주입
	
	
	//public CustomerServiceImple() {
		//cStore = new CustomerStoreLogic(); //DI로 이 결합을 해소할것임
		
	//}
	
	@Override
	public List<Customer> findA11() {
		List<Customer> cList = new CustomerStoreLogic().selectAll();
		return cList;
	}

}

Store

인터페이스

public interface CustomerStore {
public List<Customer> selectAll();

}

Logic

public class CustomerStoreLogic implements CustomerStore{

	@Override
	public List<Customer> selectAll() {
		List<Customer> cList = new ArrayList<Customer>();
		for(int i =0;i<10;i++) {
			Customer cOne = new Customer();
			cOne.setId(i+"");
			cOne.setName(i+"");
			cOne.setAddress(String.valueOf(i));
			cOne.setEmail(new StringBuffer(0).append(i).toString());
		cList.add(cOne);
		}
		return cList;
	}

}

Context.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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans-4.3.xsd">

<bean id="customerService" class="org.kh.customer.service.logic.CustomerServiceImple">
	<property name="store" ref="customerStore"></property>
</bean>

<bean id ="customerStore" class="org.kh.customer.store.logic.CustomerStoreLogic">

</bean>

</beans>

Run

public class CustomerRun {
	
	public static void main(String[] args) {
		ApplicationContext ctx = new GenericXmlApplicationContext("spring-context.xml");

	CustomerService cService = (CustomerServiceImple)ctx.getBean("customerService");
	List<Customer> cList= cService.findA11();
	for(Customer cOne : cList) {
		System.out.println(cOne.toString());
		
	}
	}

}

이해하려면 시간이 필요할 듯 하다