本文实例讲述了Spring实战之搜索Bean类操作。分享给大家供大家参考，具体如下：
一 配置文件
<?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>
二 接口
Axe
package org.crazyit.app.service;
public interface Axe
{
public String chop();
}
Person
package org.crazyit.app.service;
public interface Person
{
public void useAxe();
}
三 Bean
Chinese
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());
}
}
SteelAxe
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";
}
}
StoneAxe
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";
}
}
四 测试类
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()));
}
}
五 测试结果
--------------[chinese, steelAxe, stoneAxe, org.springframework.context.annotation.internalConfigurationAnnotationProcessor, org.springframework.context.annotation.internalAutowiredAnnotationProcessor, org.springframework.context.annotation.internalRequiredAnnotationProcessor, org.springframework.context.annotation.internalCommonAnnotationProcessor, org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor, org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor]
希望本文所述对大家java程序设计有所帮助。
