我有如下3个类，分别是Soldier、Gun和Bullet，可是getBean()之后Spring返回给我的不是一个完成了属性注入的soldier，请问何解？
Soldier:
[code="java"]
public class Soldier {
private Gun gun = null;
public Soldier() {
System.out.println("Inside soldier's constructor: soldier is here, gun is ready? - " + String.valueOf(this.gun != null));
}
public Gun getGun() {
return this.gun;
}
public void setGun(Gun arg_gun) {
this.gun = arg_gun;
}
public static void main(String arg[]) {
ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
Soldier soldier = (Soldier)ac.getBean("soldier");
System.out.println("In the Main: soldier has a gun? - " + String.valueOf(soldier.getGun() != null));
System.out.println("In the Main: soldier's gun is loaded? - " + String.valueOf(soldier.getGun().getBullet() != null));
}
}
[/code]
Gun:
[code="java"]
public class Gun {
private Bullet bullet;
public Gun() {
System.out.println("Inside gun's constructor: gun is here, bullet is ready? - " + String.valueOf(this.bullet != null));
}
public Bullet getBullet() {
return this.bullet;
}
public void setBullet(Bullet arg_bullet) {
this.bullet = arg_bullet;
}
}
[/code]
Bullet:
[code="java"]
public class Bullet {
public Bullet() {
System.out.println("Inside bullet's constructor: bullet is ready");
}
}
[/code]
XML:
[code="xml"]
<bean id="gun" class="Gun" depends-on="bullet">
<property name="gunType" value="AK-47" />
<property name="bullet" ref="bullet" />
</bean>
<bean id="bullet" class="Bullet" />
[/code]
输出：
[quote]
Inside bullet's constructor: bullet is ready
Inside gun's constructor: gun is here, bullet is ready? - false
Inside soldier's constructor: soldier is here, gun is ready? - false
In the Main: soldier has a gun? - true
In the Main: soldier's gun is loaded? - true
[/quote]
通过getBean得到了soldier，可是gun和bullet均“==null”；而当调用soldier的getGun()和gun的getBullet()，才能看到gun和bullet均“!=null”了。
请问：
1、如果main里不调getter，spring是否只初始化了各个实例，却不完成属性注入？
2、有没有什么办法，使getBean的来的soldier，让spring自动完成所有的注入，返回一个属性完整的soldoer？
谢谢
[b]问题补充：[/b]
嗯谢谢。
我想找到一种方法，让getBean()得到soldier已经能够有完整的属性（包括gun以及gun.bullet）而不必事先手动调用setter。我在想bean后处理器能否实现这样的功能？抑或有其他方法？
