Spring集合 (List,Set,Map,Properties) 實例

• List – <list/>
• Set – <set/>
• Map – <map/>
• Properties – <props/>

Spring beans

package com.xuhuhu.common;

import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

public class Customer
{
	private List<Object> lists;
	private Set<Object> sets;
	private Map<Object, Object> maps;
	private Properties pros;

	//...
}

1. List示例

<property name="lists">
		<list>
			<value>1</value>
			<ref bean="PersonBean" />
			<bean class="com.xuhuhu.common.Person">
				<property name="name" value="zaixianList" />
				<property name="address" value="Hainan" />
				<property name="age" value="28" />
			</bean>
		</list>
	</property>

2. Set示例

<property name="sets">
		<set>
			<value>1</value>
			<ref bean="PersonBean" />
			<bean class="com.xuhuhu.common.Person">
				<property name="name" value="zaixianSet" />
				<property name="address" value="Hainan" />
				<property name="age" value="28" />
			</bean>
		</set>
	</property>

3. Map示例

<property name="maps">
		<map>
			<entry key="Key 1" value="1" />
			<entry key="Key 2" value-ref="PersonBean" />
			<entry key="Key 3">
				<bean class="com.xuhuhu.common.Person">
					<property name="name" value="zaixianMap" />
					<property name="address" value="Hainan" />
					<property name="age" value="28" />
				</bean>
			</entry>
		</map>
	</property>

4. Properties示例

<property name="pros">
		<props>
			<prop key="admin">admin@xuhuhu.com</prop>
			<prop key="support">support@xuhuhu.com</prop>
		</props>
	</property>

<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-2.5.xsd">

	<bean id="CustomerBean" class="com.xuhuhu.common.Customer">

		<!-- java.util.List -->
		<property name="lists">
			<list>
				<value>1</value>
				<ref bean="PersonBean" />
				<bean class="com.xuhuhu.common.Person">
					<property name="name" value="zaixianList" />
					<property name="address" value="Hainan Haikou" />
					<property name="age" value="28" />
				</bean>
			</list>
		</property>

		<!-- java.util.Set -->
		<property name="sets">
			<set>
				<value>1</value>
				<ref bean="PersonBean" />
				<bean class="com.xuhuhu.common.Person">
					<property name="name" value="zaixianSet" />
					<property name="address" value="Hainan Haikou" />
					<property name="age" value="28" />
				</bean>
			</set>
		</property>

		<!-- java.util.Map -->
		<property name="maps">
			<map>
				<entry key="Key 1" value="1" />
				<entry key="Key 2" value-ref="PersonBean" />
				<entry key="Key 3">
					<bean class="com.xuhuhu.common.Person">
						<property name="name" value="zaixianMap" />
						<property name="address" value="Hainan Haikou" />
						<property name="age" value="28" />
					</bean>
				</entry>
			</map>
		</property>

		<!-- java.util.Properties -->
		<property name="pros">
			<props>
				<prop key="admin">admin@xuhuhu.com</prop>
				<prop key="support">support@xuhuhu.com</prop>
			</props>
		</property>

	</bean>

	<bean id="PersonBean" class="com.xuhuhu.common.Person">
		<property name="name" value="zaixian1" />
		<property name="address" value="Hainan Haikou 1" />
		<property name="age" value="28" />
	</bean>

</beans>

執行程式

package com.xuhuhu.common;

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

public class App
{
    public static void main( String[] args )
    {
    	ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

    	Customer cust = (Customer)context.getBean("CustomerBean");
    	System.out.println(cust);

    }
}

輸出

Customer [lists=[1, com.xuhuhu.common.Person@4e4ee70b, com.xuhuhu.common.Person@1e1867d2], sets=[1, com.xuhuhu.common.Person@4e4ee70b, com.xuhuhu.common.Person@52f644b4], maps={Key 1=1, Key 2=com.xuhuhu.common.Person@4e4ee70b, Key 3=com.xuhuhu.common.Person@54481b6d}, pros={admin=admin@xuhuhu.com, support=support@xuhuhu.com}]