Java/Spring/IoC Resource
File System Resource Demo
<source lang="java">
/* Pro Spring By Rob Harrop Jan Machacek ISBN: 1-59059-461-4 Publisher: Apress
- /
/////////////////////////////////////////////////////////////////////////////////////// //File: beans.xml <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans>
<bean id="oracle" name="wiseworm" class="BookwormOracle"/>
</beans>
/////////////////////////////////////////////////////////////////////////////////////// public interface Oracle {
public String defineMeaningOfLife();
}
/////////////////////////////////////////////////////////////////////////////////////// public class Encyclopedia { } /////////////////////////////////////////////////////////////////////////////////////// public class BookwormOracle implements Oracle {
private Encyclopedia enc;
public void setEncyclopedia(Encyclopedia enc) {
this.enc = enc;
}
public String defineMeaningOfLife() {
return "Encyclopedia"s are a waste of money - use the Internet";
}
} /////////////////////////////////////////////////////////////////////////////////////// import org.springframework.beans.factory.support.DefaultListableBeanFactory; import org.springframework.beans.factory.xml.XmlBeanDefinitionReader; import org.springframework.core.io.FileSystemResource; public class XmlConfig {
public static void main(String[] args) {
DefaultListableBeanFactory factory = new DefaultListableBeanFactory();
XmlBeanDefinitionReader rdr = new XmlBeanDefinitionReader(factory);
rdr.loadBeanDefinitions(new FileSystemResource("build/beans.xml"));
Oracle oracle = (Oracle)factory.getBean("oracle");
}
}
</source>
Message Source
<source lang="java">
/* Pro Spring By Rob Harrop Jan Machacek ISBN: 1-59059-461-4 Publisher: Apress
- /
/////////////////////////////////////////////////////////////////////////////////////// <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans>
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basenames">
<list>
<value>buttons</value>
<value>labels</value>
</list>
</property>
</bean>
</beans>
/////////////////////////////////////////////////////////////////////////////////////// import java.util.Locale; import org.springframework.context.ApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; public class MessageSourceDemo {
public static void main(String[] args) {
ApplicationContext ctx = new FileSystemXmlApplicationContext(
"build/messageSource.xml");
Locale english = Locale.ENGLISH;
Locale czech = new Locale("cs", "CZ");
System.out.println(ctx.getMessage("msg", null, english));
System.out.println(ctx.getMessage("msg", null, czech));
System.out.println(ctx.getMessage("nameMsg", new Object[] { "Rob",
"Harrop" }, english));
}
}
</source>
Spring Load Resource from file, classpath and URL
<source lang="java">
/* Pro Spring By Rob Harrop Jan Machacek ISBN: 1-59059-461-4 Publisher: Apress
- /
/////////////////////////////////////////////////////////////////////////////////////// //File: events.xml <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans>
<bean id="publisher" class="Publisher"/>
<bean id="messageEventListener" class="MessageEventListener"/>
</beans> /////////////////////////////////////////////////////////////////////////////////////// import org.springframework.context.ApplicationEvent;
public class MessageEvent extends ApplicationEvent {
private String msg;
public MessageEvent(Object source, String msg) {
super(source);
this.msg = msg;
}
public String getMessage() {
return msg;
}
} /////////////////////////////////////////////////////////////////////////////////////// import org.springframework.context.ApplicationEvent; import org.springframework.context.ApplicationListener; public class MessageEventListener implements ApplicationListener {
public void onApplicationEvent(ApplicationEvent event) {
if(event instanceof MessageEvent) {
MessageEvent msgEvt = (MessageEvent)event;
System.out.println("Received: " + msgEvt.getMessage());
}
}
} /////////////////////////////////////////////////////////////////////////////////////// import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.support.FileSystemXmlApplicationContext; public class Publisher implements ApplicationContextAware {
private ApplicationContext ctx;
public static void main(String[] args) {
ApplicationContext ctx = new FileSystemXmlApplicationContext(
"build/events.xml");
Publisher pub = (Publisher) ctx.getBean("publisher");
pub.publish("Hello World!");
pub.publish("The quick brown fox jumped over the lazy dog");
}
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
this.ctx = applicationContext;
}
public void publish(String message) {
ctx.publishEvent(new MessageEvent(this, message));
}
} /////////////////////////////////////////////////////////////////////////////////////// import org.springframework.context.ApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; import org.springframework.core.io.Resource; public class ResourceDemo {
public static void main(String[] args) throws Exception{
ApplicationContext ctx = new FileSystemXmlApplicationContext(
"build/events.xml");
Resource res1 = ctx.getResource("file:///c:/test.txt");
displayInfo(res1);
Resource res2 = ctx.getResource("classpath:lib/commons-logging.jar");
displayInfo(res2);
Resource res3 = ctx.getResource("http://www.google.co.uk");
displayInfo(res3);
}
private static void displayInfo(Resource res) throws Exception{
System.out.println(res.getClass());
System.out.println(res.getURL().getContent());
System.out.println("");
}
}
</source>
