spring中的解耦

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本文主要介绍spring中的解耦,采用面向接口编程的思想

首先,beans.xml配置

<?xml version="1.0" encoding="UTF-8"?><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"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><!-- <bean id="changeLetter" class="decoupling.ToLowerCase"><property name="str" value="AbcdEf"></property></bean> --><bean id="changeLetter" class="decoupling.ToUpperCase"><property name="str" value="AbcdEf"></property></bean></beans>

接口文件ChangeLetterInterface.java

package decoupling;public interface ChangeLetterInterface {public  String change();}

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