Junky's IT Notebook

Spring in Action 筆記(I)

在考試前匆匆看了一遍Spring in Action 也沒有記錄什么,考試結束了,要抓緊時間整理一下.要不然就忘了.^_^:

整理一下我目前可能會用到的模塊, 對于那些現在根本用不到的冬冬還是等有時間再研究吧!

第一個當然是最經典的HelloWorld 了 , 呵呵,簡單,但是說明了原理.

定義一個服務接口

package? test.helloworld;

public?interface? GreetingService?{
?? public?void? sayGreeting();

}

下面是其實現:

package? test.helloworld;

public?class? GreetingServiceImpl? implements? GreetingService?{

?? private? String?greeting;
?? public? GreetingServiceImpl()?{}
?? public? GreetingServiceImpl(String?greeting)?{
???? this .greeting?=?greeting;
?? }
?? public?void? sayGreeting()?{
???? //??Auto-generated?method?stub
???? System.out.println(greeting);
?? }
??
?? public?void? setGreeting(String?greeting)?{
???? this .greeting?=?greeting;
?? }

}

然后就是測試 IoC 的測試代碼:

package? test.helloworld;


import? org.springframework.beans.factory.BeanFactory;
import? org.springframework.beans.factory.xml.XmlBeanFactory;
import? org.springframework.context.ApplicationContext;
import? org.springframework.context.support.ClassPathXmlApplicationContext;
import? org.springframework.core.io.FileSystemResource;

public?class? HelloApp?{

?? /**
??? *? @param? args
??? */
?? public?static?void? main(String[]?args)?{
???? //?TODO?Auto-generated?method?stub
//????BeanFactory?factory;
//????factory?=?new?XmlBeanFactory(new?FileSystemResource("src/test/helloworld/hello.xml"));
???? //?使用不同的方法得到bean.?(BeanFactory?or?ApplicationContext)
???? ApplicationContext?context?=? new? ClassPathXmlApplicationContext( "test/helloworld/hello.xml" );
????
????
???? GreetingService?greetingService?=?(GreetingService)?context.getBean( "greetingService" );
//????GreetingService?greetingService?=?(GreetingService)?factory.getBean("greetingService");
???? greetingService.sayGreeting();
?? }

}

還有重要的配置文件如下:hello.xml

<?

xml version = "1.0" encoding = "UTF-8" ?>

<!

DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"

"http://www.springframework.org/dtd/spring-beans.dtd" >

<

beans >

< bean id = "greetingService"

class = "test.helloworld.GreetingServiceImpl" >

< property name = "greeting" >

< value > ice rain ! </ value >

</ property >

</ bean >

</

beans >

呵呵就這么簡單,實現了 greeting 屬性的 Ioc.

這是Spring 兩大基本支柱其一的工作原理, 關于AoP的內容,在這里不作討論,因為現在我使用AoP的地方不是很多,簡單的應用是很簡單的啦.^_^.

下面一篇我們來看看 在spring包裝下的jdbc訪問. 詳細情況也可以參考這里

posted on 2006-05-23 19:37 junky 閱讀(257) 評論(0)  編輯  收藏 所屬分類: spring