IoC in properties file
/* Pro Spring By Rob Harrop Jan Machacek ISBN: 1-59059-461-4 Publisher: Apress */ /////////////////////////////////////////////////////////////////////////////////////// //File: beans.properties # The View view. class =StandardOutView view.model ( ref ) =model # The Model model. class =HelloWorldModel /////////////////////////////////////////////////////////////////////////////////////// public interface View { public void render () ; public void setModel ( Model m ) ; public Model getModel () ; } /////////////////////////////////////////////////////////////////////////////////////// public interface Model { public String getMessage () ; } /////////////////////////////////////////////////////////////////////////////////////// public class StandardOutView implements View { private Model model = null ; public void render () { if ( model == null ) { throw new RuntimeException ( "You must set the property model of class:" + StandardOutView. class .getName ()) ; } System.out.println ( model.getMessage ()) ; } public void setModel ( Model m ) { this .model = m; } public Model getModel () { return this .model; } } /////////////////////////////////////////////////////////////////////////////////////// public class HelloWorldModel implements Model { public String getMessage () { return "Hello World!" ; } } /////////////////////////////////////////////////////////////////////////////////////// import java.io.FileInputStream; import java.util.Properties; import org.springframework.beans.factory.BeanFactory; import org.springframework.beans.factory.support.DefaultListableBeanFactory; import org.springframework.beans.factory.support.PropertiesBeanDefinitionReader; public class HelloWorldSpring { public static void main ( String [] args ) throws Exception { // get the bean factory BeanFactory factory = getBeanFactory () ; View v = ( View ) factory.getBean ( "view" ) ; Model mp = ( Model ) factory.getBean ( "model" ) ; v.setModel ( mp ) ; v.render () ; } private static BeanFactory getBeanFactory () throws Exception { // get the bean factory DefaultListableBeanFactory factory = new DefaultListableBeanFactory () ; // create a definition reader PropertiesBeanDefinitionReader rdr = new PropertiesBeanDefinitionReader ( factory ) ; // load the configuration options Properties props = new Properties () ; props.load ( HelloWorldSpring. class .getResource ( "beans.properties" ) .openStream ()) ; rdr.registerBeanDefinitions ( props ) ; return factory; } }
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HelloWorld.zip( 1,199 k)