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。

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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;    public Collection
       
         getInstrument() {        return instrument;    }    public void setInstrument(Collection
        
          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();    }}

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

public class Band {    private Collection
      
        instrument;    private Map
       
         mapIns;    public Map
        
          getMapIns() {        return mapIns;    }    public void setMapIns(Map
         
           mapIns) {        this.mapIns = mapIns;    }    public Collection
          
            getInstrument() {        return instrument;    }    public void setInstrument(Collection
           
             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。