<?xml version="1.0" encoding="GBK"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://www.springframework.org/schema/beans"
   xmlns:p="http://www.springframework.org/schema/p"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
   <!-- 配置2個(gè)普通Bean實(shí)例 -->
   <bean id="steelAxe" class="org.crazyit.app.service.impl.SteelAxe"/>
   <bean id="chinese" class="org.crazyit.app.service.impl.Chinese"
      init-method="init" p:axe-ref="steelAxe" p:name="依賴注入的值"/>
   <!-- 配置Bean后處理器，可以無(wú)需指定id屬性 -->
   <bean id="bp" class="org.crazyit.app.util.MyBeanPostProcessor"/>
</beans>

package org.crazyit.app.service;
public interface Axe
{
   public String chop();
}

package org.crazyit.app.service;
public interface Person
{
   public void useAxe();
}

package org.crazyit.app.service.impl;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.crazyit.app.service.*;
public class Chinese
  implements Person,InitializingBean
{
  private Axe axe;
  private String name;
  public Chinese()
  {
    System.out.println("Spring實(shí)例化主調(diào)bean：Chinese實(shí)例...");
  }
  public void setAxe(Axe axe)
  {
    this.axe = axe;
  }
  public void setName(String name)
  {
    System.out.println("Spring執(zhí)行setName()方法注入依賴關(guān)系...");
    this.name = name;
  }
  public void useAxe()
  {
    System.out.println(name + axe.chop());
  }
  // 下面是兩個(gè)生命周期方法
  public void init()
  {
    System.out.println("正在執(zhí)行初始化方法 init...");
  }
  public void afterPropertiesSet() throws Exception
  {
    System.out.println("正在執(zhí)行初始化方法 afterPropertiesSet...");
  }
}

package org.crazyit.app.service.impl;
import org.crazyit.app.service.*;
public class SteelAxe
   implements Axe
{
   public SteelAxe()
   {
      System.out.println("Spring實(shí)例化依賴bean：SteelAxe實(shí)例...");
   }
   public String chop()
   {
      return "鋼斧砍柴真快";
   }
}

package org.crazyit.app.util;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.crazyit.app.service.*;
import org.crazyit.app.service.impl.*;
public class MyBeanPostProcessor
  implements BeanPostProcessor
{
  /**
   * 對(duì)容器中的Bean實(shí)例進(jìn)行后處理
   * @param bean 需要進(jìn)行后處理的原Bean實(shí)例
   * @param beanName 需要進(jìn)行后處理的Bean的配置id
   * @return 返回后處理完成后的Bean
   */
  public Object postProcessBeforeInitialization
    (Object bean , String beanName)
  {
    System.out.println("Bean后處理器在初始化之前對(duì)"
      + beanName + "進(jìn)行增強(qiáng)處理...");
    // 返回的處理后的Bean實(shí)例，該實(shí)例就是容器中實(shí)際使用的Bean
    // 該Bean實(shí)例甚至可與原Bean截然不同
    return bean;
  }
  public Object postProcessAfterInitialization
    (Object bean , String beanName)
  {
    System.out.println("Bean后處理器在初始化之后對(duì)"
      + beanName + "進(jìn)行增強(qiáng)處理...");
    // 如果該Bean是Chinese類(lèi)的實(shí)例
    if (bean instanceof Chinese)
    {
      // 修改其name成員變量
      Chinese c = (Chinese)bean;
      c.setName("瘋狂iOS講義");
    }
    return bean;
  }
}