Admin: 1 версия

2010-06-01T06:17:01Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:44Z

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== ApplicationContext Aware ==



<source lang="java">

File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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.xsd">

<bean id="contextAware" class="ContextAwareDemo"/>

</beans>

File: Main.java
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext(
"context.xml");
ContextAwareDemo demo = (ContextAwareDemo) ctx.getBean("contextAware");
demo.displayAppContext();
}
}
class ContextAwareDemo implements ApplicationContextAware {
private ApplicationContext ctx;
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
ctx = applicationContext;
}
public static void main(String[] args) {
}
public void displayAppContext() {
System.out.println(ctx);
}
}

</source>



== ContextApplication Event ==



<source lang="java">
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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.xsd">

<bean id="publisher" class="EventPublisherDemo"/>
<bean class="MessageEventListener"/>
</beans>

File: Main.java
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("context.xml");
EventPublisherDemo pub = (EventPublisherDemo) ctx.getBean("publisher");
pub.report("A");
pub.report("B");
}
}
class EventPublisherDemo implements ApplicationContextAware {
private ApplicationContext ctx;
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.ctx = applicationContext;
}
public void report(String message) {
ctx.publishEvent(new MessageEvent(this, message));
}
}
class MessageEvent extends ApplicationEvent {
private String message;
public MessageEvent(Object source, String message) {
super(source);
this.message = message;
}
public String getMessage() {
return message;
}
}
class MessageEventListener implements ApplicationListener {
public void onApplicationEvent(ApplicationEvent event) {
if (event instanceof MessageEvent) {
MessageEvent messageEvent = (MessageEvent) event;
System.out.println("Received " + messageEvent.getMessage());
}
}
}

</source>



== Create ApplicationContext with ClassPathXmlApplicationContext ==



<source lang="java">

File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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.xsd">

<bean id="errorReporter" class="ErrorReporter"/>
</beans>

File: Main.java
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext(
"context.xml");
ErrorReporter reporter = (ErrorReporter) ctx.getBean("errorReporter");
reporter.evaluate(1);
}
}
class ErrorReporter {
public void evaluate(int value) {
System.out.println(value);
}
}

</source>



== ResourceLoader Demo ==



<source lang="java">

File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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.xsd">
</beans>

File: Main.java
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.Resource;
public class Main {
public static void main(String[] args) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("context.xml");
Resource res1 = ctx.getResource("file:///tmp");
System.out.println(res1.getClass());
Resource res2 = ctx.getResource("classpath:com/yourName/Complex.class");
System.out.println(res2.getURL());
Resource res3 = ctx.getResource("http://www.google.ru");
System.out.println(res3.getFile());
}
}

</source>

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Admin: 1 версия

в 18:01, 31 мая 2010