这里说说bean装配集合。spring的支持的集合元素，其基本使用方式如同与Java的集合，所以假设对Java的集合不太了解的能够先找个帖子好好学习一下， 时间关系这里就不说了。
~~ list的样例
public interface Instrument { void play(); } public class Guitar implements Instrument { @Override public void play() { // TODO Auto-generated method stub System.out.println("dang dang dang"); } } public class Piano implements Instrument{ @Override public void play() { // TODO Auto-generated method stub System.out.println("ding ding ding"); } } public class Saxophone implements Instrument{ @Override public void play() { // TODO Auto-generated method stub System.out.println("wu wu wu "); } } public class Band { private Collection<Instrument> instrument; public Collection<Instrument> getInstrument() { return instrument; } public void setInstrument(Collection<Instrument> instrument) { this.instrument = instrument; } public void play(){ for(Instrument ins:instrument) ins.play(); } } public class test { public static void main(String[] args) { // TODO Auto-generated method stub ApplicationContext ac = new ClassPathXmlApplicationContext("blog3/bean.xml"); Band band = (Band) ac.getBean("band"); band.play(); } } <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="band" class="blog3.Band"> <property name="instrument"> <list> <ref bean="guitar"/> <ref bean="piano"/> <ref bean="saxophone"/> </list> </property> </bean> <bean id="guitar" class="blog3.Guitar"/> <bean id="piano" class="blog3.Piano"/> <bean id="saxophone" class="blog3.Saxophone"/>set和list使用方式一致。把list换成set就好了，主要是set中元素不能反复。另外多说一点，为了解耦Spring推荐使用基于接口的编程方式。
另外数组也是使用这样的装配方式。
map
<bean id="bandmap" class="blog3.Band"> <property name="mapIns"> <map> <entry key="GUITAR" value-ref="guitar"/> <entry key="PINAO" value-ref="piano"/> <entry key="SAXOPHONE" value-ref="saxophone"/> </map> </property> </bean> public class Band { private Collection<Instrument> instrument; private Map<String, Instrument> mapIns; public Map<String, Instrument> getMapIns() { return mapIns; } public void setMapIns(Map<String, Instrument> mapIns) { this.mapIns = mapIns; } public Collection<Instrument> getInstrument() { return instrument; } public void setInstrument(Collection<Instrument> instrument) { this.instrument = instrument; } public void play(){ for(Instrument ins:instrument) ins.play(); } public void mapPlay(){ for(String key:mapIns.keySet()){ System.out.println(key); Instrument tmp = mapIns.get(key); tmp.play(); } } } public static void main(String[] args) { // TODO Auto-generated method stub ApplicationContext ac = new ClassPathXmlApplicationContext("blog3/bean.xml"); // Band band = (Band) ac.getBean("band"); // band.play(); Band band2 = (Band) ac.getBean("bandmap"); band2.mapPlay(); }properties装配，对照与map，properties的key和value仅仅能是string类型。其余都差点儿相同 好了，差点儿相同了。上代码吧。 http://download.csdn.net/detail/wsrspirit/8868347
转载于:https://www.cnblogs.com/bhlsheji/p/5355402.html
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