By : icess ,我的部落格 http://blog.matrix.org.cn/page/icess
在考试前匆匆看了一遍Spring in Action 也没有记录什么,考试结束了,要抓紧时间整理一下.要不然就忘了.^_^:
整理一下我目前可能会用到的模块, 对于那些现在根本用不到的冬冬还是等有时间再研究吧!
第一个当然是最经典的HelloWorld 了 , 呵呵,简单,但是说明了原理.
定义一个服务接口
package?
test.helloworld;
public?interface?
GreetingService?{
??
public?void?
sayGreeting();
}
下面是其实现:
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;
??
}
}
然后就是测试 IoC 的测试代码:
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();
??
}
}
还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 >呵呵就这么简单,实现了 greeting 属性的 Ioc.
这是Spring 两大基本支柱其一的工作原理, 关于AoP的内容,在这里不作讨论,因为现在我使用AoP的地方不是很多,简单的应用是很简单的啦.^_^.
下面一篇我们来看看 在spring包装下的jdbc访问. 详细情况也可以参考这里
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