Design Pattern-4.1 spring getting started spring Bean Factory

We mentioned spring Bean factory when talking about the factory model. Here is a detailed description:

 

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Spring bean containers and bean factories, also known as IOC (inverseof control), are interface-oriented and abstract-oriented.

 

Getting started with spring:

The moveable interface is also available:

PackageCom. bjsxt. Spring. factory;

 

PublicInterfaceMoveable {

VoidRun ();

}

 

Of course, there are also implementations.MoveableSubclass of the interface:

CarAndTrain

 

PackageCom. bjsxt. Spring. factory;

 

 

PublicClassCarImplementsMoveable {

PublicVoidRun (){

System.Out. Println ("Running in smokeCar .......");

}

}

 

PackageCom. bjsxt. Spring. factory;

 

PublicClassTrainImplementsMoveable {

 

@ Override

PublicVoidRun (){

System.Out. Println ("Whining");

}

}

 

The key is in test (User:

PackageCom. bjsxt. Spring. factory;

 

ImportJava. Io. ioexception;

 

ImportOrg. springframework. Beans. Factory. beanfactory;

ImportOrg. springframework. Context. Support. classpathxmlapplicationcontext;

 

//We used to usePropertiesFile to read information,Obtain the name of the class. Then, we get the object of this class through reflection.

PublicClassTest {

 

/**

 *@ ParamARGs

 *@ ThrowsIoexception

 */

PublicStaticVoidMain (string [] ARGs)Throws
Exception {

//PassXMLFile to read information

//BecauseXMLTherefore, the reading method is different.

Beanfactory F =NewClasspathxmlapplicationcontext ("Applicationcontext. xml");

Object o = f. getbean ("V");

Moveable M = (moveable) O;

M. Run ();

}

 

}

 

 

Let's take a look at the information in the XML file:

 

<?XMLVersion="1.0"Encoding=UTF-8"?>

<BeansXmlns=Http://www.springframework.org/schema/beans"

Xmlns: xsi=Http://www.w3.org/2001/XMLSchema-instance"

Xsi: schemalocation=Http://www.springframework.org/schema/beans

Http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

 

<BeanID="V"Class="Com. bjsxt. Spring. Factory. Train">

</Bean>

<! --// V = com. bjsxt. Spring. Factory. Car -->

 

 

</Beans>

 

It's easy.Bean, ItsIDIsVAnd then itsClassYesCom. bjsxt. Spring. Factory. Train

 

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