Spring实战之搜索Bean类操作示例

<?xml version="1.0" encoding="GBK"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context-4.0.xsd">
   <!-- 自动扫描指定包及其子包下的所有Bean类 -->
   <context:component-scan
      base-package="org.crazyit.app.service"/>
</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.stereotype.*;
import org.crazyit.app.service.*;
@Component
public class Chinese
  implements Person
{
  private Axe axe;
  // axe的setter方法
  public void setAxe(Axe axe)
  {
    this.axe = axe;
  }
  // 实现Person接口的useAxe()方法
  public void useAxe()
  {
    System.out.println(axe.chop());
  }
}

package org.crazyit.app.service.impl;
import org.springframework.stereotype.*;
import org.crazyit.app.service.*;
@Component
public class SteelAxe implements Axe
{
  public String chop()
  {
    return "钢斧砍柴真快";
  }
}

package org.crazyit.app.service.impl;
import org.springframework.stereotype.*;
import org.crazyit.app.service.*;
@Component
public class StoneAxe implements Axe
{
  public String chop()
  {
    return "石斧砍柴好慢";
  }
}

package lee;
import org.springframework.context.*;
import org.springframework.context.support.*;
public class BeanTest
{
  public static void main(String[] args)
  {
    // 创建Spring容器
    ApplicationContext ctx = new
      ClassPathXmlApplicationContext("beans.xml");
    // 获取Spring容器中的所有Bean实例的名
    System.out.println("--------------" +
      java.util.Arrays.toString(ctx.getBeanDefinitionNames()));
  }
}