[Spring] Collection

 

 

 

세 가지 유형이 있다. (List, Set, Map)

 

1. List

 

package com.springbook.ioc.injection;

import java.util.List;

public class CollectionBean {

	private List<String> addressList;

	public List<String> getAddressList() {
		return addressList;
	}

	public void setAddressList(List<String> addressList) {
		System.out.println(addressList.size());
		this.addressList = addressList;
	}

}

<?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">

	<bean id="collection" class="com.springbook.ioc.injection.CollectionBean">
		<property name="addressList">
			<list>
				<value>서울시 영등포구</value>
				<value>부천시 원미구</value>
			</list>
		</property>
	</bean>
</beans>

 

 

package com.springbook.ioc.injection;

import java.util.List;

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

public class CollectionBeanClient {

	public static void main(String[] arhs) {
		AbstractApplicationContext factory = new GenericXmlApplicationContext("applicationContext2.xml");
		
		CollectionBean bean = (CollectionBean)factory.getBean("collectionBean");
		
		
		List<String> list = bean.getAddressList();
		for(int i = 0 ; i<list.size(); i++) {
			String a = list.get(i).toString();
			System.out.println(a);
		}
		
		
	}

}

 

 

 

 

2.set

 

package com.springbook.ioc.injection;

import java.util.Set;

public class CollectionBean {

	private Set<String> addressList;

	public Set<String> getAddressList() {
		return addressList;
	}

	public void setAddressList(Set<String> addressList) {
		System.out.println(addressList.size());
		this.addressList = addressList;
	}

}

<?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">

	<bean id="collectionBean" class="com.springbook.ioc.injection.CollectionBean">
		<property name="addressList">
			<set>
				<value>서울시 영등포구</value>
				<value>부천시 원미구</value>
			</set>
		</property>
	</bean>
</beans>

package com.springbook.ioc.injection;

import java.util.Set;

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

public class CollectionBeanClient {

	public static void main(String[] arhs) {
		AbstractApplicationContext factory = new GenericXmlApplicationContext("applicationContext2.xml");
		
		CollectionBean bean = (CollectionBean)factory.getBean("collectionBean");
		
		
		Set<String> addressList = bean.getAddressList();
		 for(String list : addressList) {
	         System.out.println(list);
	      }

		
		
	}

}

 

 

 

3.map

package com.springbook.ioc.injection;

import java.util.Map;

public class CollectionBean {

	private Map<String,String> addressList;

	public Map<String,String> getAddressList() {
		return addressList;
	}

	public void setAddressList(Map<String,String> addressList) {
		System.out.println(addressList.size());
		this.addressList = addressList;
	}

	
}

 

<?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">

	<!-- <bean id="collectionBean" class="com.springbook.ioc.injection.CollectionBean">
		<property name="addressList">
			<set>
				<value>서울시 영등포구</value>
				<value>부천시 원미구</value>
			</set>
		</property>
	</bean> -->
	
	<bean id="collectionBean" class="com.springbook.ioc.injection.CollectionBean">
		<property name="addressList">
			<map>
				<entry>
					<key>
						<value>고길동</value>
					</key>
					<value>서울시 영등포구</value>
				</entry>
				<entry>
					<key>
						<value>마이클</value>
					</key>
					<value>부천시 원미구</value>
				</entry>
			</map>
		</property>
	</bean> 
</beans>

package com.springbook.ioc.injection;

import java.util.Iterator;
import java.util.Map;

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

public class CollectionBeanClient {

	public static void main(String[] arhs) {
		AbstractApplicationContext factory = new GenericXmlApplicationContext("applicationContext2.xml");
		
		CollectionBean bean = (CollectionBean)factory.getBean("collectionBean");
		
		Map<String, String> addressList = bean.getAddressList();
        
        1.
		Iterator<String> list = addressList.keySet().iterator();
		while(list.hasNext()) {
			String key = list.next();
			String value = addressList.get(key);
			System.out.println(String.format("키:%s, 값:%s", key,value));

			//System.out.println(String.format("키:%s, 값:%s",key,addressList.get(key)));
		}

		2.
        for(String list : addressList.keySet()) {
        	System.out.println(String.format("키 : %s, 값 : %s",list,addressList.get(list)));
        }
        
		
		
	}

}

 

 

4.properties

package com.springbook.ioc.injection;

import java.util.Properties;

public class CollectionBean {

	private Properties addressList;

	public Properties getAddressList() {
		return addressList;
	}

	public void setAddressList(Properties addressList) {
		this.addressList = addressList;
	}
	
	
}

<?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">

	<bean id="collectionBean" class="com.springbook.ioc.injection.CollectionBean">
		<property name="addressList">
			<props>
				<prop key="고길동">서울시 영등포구 여의도1동</prop>
				<prop key="마이클">서울시 영등포구 여의도2동</prop>
			</props>
		</property>
	</bean>
</beans>

package com.springbook.ioc.injection;

import java.util.Properties;

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

public class CollectionBeanClient {

	public static void main(String[] arhs) {
		AbstractApplicationContext factory = new GenericXmlApplicationContext("applicationContext2.xml");
		
		CollectionBean bean = (CollectionBean)factory.getBean("collectionBean");
		Properties addressList = bean.getAddressList();
		
		for(String list : addressList.stringPropertyNames()) {
			System.out.println(String.format("키:%s,값:%s", list,addressList.get(list)));
		}
		
	}

}