(笔记)IOC Spring 初学逻辑整理(Inversion of control)

最新推荐文章于 2022-06-29 21:47:56 发布

最新推荐文章于 2022-06-29 21:47:56 发布 · 108 阅读

文章标签：

#Spring #IOC #Apple #Myeclipse #XML

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本文介绍如何使用MyEclipse创建Spring项目，并详细解释了如何通过 applicationContext.xml 文件进行Bean的定义与依赖注入。文章提供了具体的代码示例，包括Bean的定义方式、依赖关系的建立及如何通过Main类来调用这些Bean的功能。

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（MyEclipse）基本构架

--> MyEclipse-->Add Spring Capabilities

在SRC文件夹出现ApplicationContext.xml，在此处Compile.
[color=darkred](Contents)[/color]
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
<bean name="[color=red]apple[/color]" class="Apple.AppleDaoImpl"></bean>
<bean name="[color=green]apple2[/color]" class="Apple.AppleDaoImple"></bean>

<bean name="[u]apples[/u]" class="Apple.Apples">
<property name="apple" ref="[color=green]apple2[/color]"></property>
</bean>
</beans>

--> Create new package,Apple

The file (AppleDao,AppleDaoImpl,Apples) must be exist.

AppleDao
AppleDaoImpl --> implements AppleDao --> [color=red]Apple[/color]
AppleDaoImple --> implements AppleDao --> [color=green]Apple2[/color]
[b][color=red]Apples[/color][/b]
package Apple;

public class [b][color=red]Apples [/color][/b]{
AppleDao apple;

public AppleDao getApple() {
return apple;
}
// set method is needed here....
public void setApple(AppleDao apple) {
this.apple = apple;
}

public void add(){
apple.addApple(1, "", "", 102);
apple.deleteApple(1);
}
}

create Main to realize the function:

package Apple;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {

public static void main(String[] args) {
BeanFactory beanFactory = new ClassPathXmlApplicationContext("applicationContext.xml");
Apples apple=(Apples)beanFactory.getBean("[u]apples[/u]");
apple.add();
}

}