Spring注入集合

可以注入的类型：Array、List、Set、Map、Properties。（虽然Map不是Collection）

创建新项目或者下载我做好的

BeanCollections.java文件：

package com.explause.CollectionInjectExamples;

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

public class BeanCollections {
	private Object[] array;
	private List<?> list;
	private Set<?>  set;
	private Map<?, ?>  map;
	private Properties prop;
	
	public void setArray(Object[] array) {
		this.array = array;
	}
	public void getArray() {
		System.out.print("Array Elements :");
		for (Object i : array) {
			System.out.print(i);
			System.out.print(", ");
		}
		System.out.println();
	}
	public void setList(List<?> list) {
		this.list = list;
	}
	public void getList() {
		System.out.println("List Elements :"  + list);
	}
	public void setSet(Set<?> set) {
		this.set = set;
	}
	public void getSet() {
		System.out.println("Set Elements :"  + set);
	}
	public void setMap(Map<?, ?> map) {
		this.map = map;
	}
	public void getMap() {
		System.out.println("Map Elements :"  + map);
	}
	public void setProp(Properties prop) {
		this.prop = prop;
	}
	public void getProp() {
		System.out.println("Properties Elements :"  + prop);
	}
}

CollectionInjectDemo.java文件：

package com.explause.CollectionInjectExamples;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class CollectionInjectDemo {
	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
		BeanCollections bc = (BeanCollections) context.getBean("beanCollections");
		bc.getArray();
		bc.getList();
		bc.getMap();
		bc.getProp();
		bc.getSet();
		context.close();
	}
}

Beans.xml配置文件：

<?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-3.0.xsd">
	
	<bean id='beanCollections' class='com.explause.CollectionInjectExamples.BeanCollections'>
		<property name="array">
			<array>
				<value>1</value>
				<value>2</value>
				<value>3</value>
				<value>4</value>
			</array>
		</property>
		<property name="list">
			<list>
				<value>1</value>
				<value>2</value>
				<value>3</value>
				<value>4</value>
			</list>
		</property>
		<property name="set">
			<set>
				<value>one</value>
				<value>two</value>
				<value>three</value>
				<value>three</value>
			</set>
		</property>
		<property name="map">
			<map>
				<entry key='1' value='one'/>
				<entry key='2' value='two'/>
				<entry key='3' value='three'/>
				<entry key='4' value='four'/>
			</map>
		</property>
		<property name="prop">
			<props>
				<prop key="one">一</prop>
				<prop key="two">二</prop>
				<prop key="three">三</prop>
				<prop key="four">四</prop>
			</props>
		</property>
	</bean>
</beans>

最后的输出结果：

就像一般的依赖注入一样执行。只是要注意property标签里面的子标签以及它们的子标签，list和set都是value，map是entry，props是prop。

就是bean配置文件又臭又长。