Aspect Hello World Example : Spring Aspect « Spring « Java

Aspect Hello World Example

Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress


public interface IMessageWriter {

    public void writeMessage();


public class MessageWriter implements IMessageWriter{

    public void writeMessage() {


import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class MessageDecorator implements MethodInterceptor {

    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.print("Hello ");
        Object retVal = invocation.proceed();
        return retVal;


import org.springframework.aop.framework.ProxyFactory;

public class HelloWorldAOPExample {

    public static void main(String[] args) {
        MessageWriter target = new MessageWriter();
        // create the proxy
        ProxyFactory pf = new ProxyFactory();

        pf.addAdvice(new MessageDecorator());

        MessageWriter proxy = (MessageWriter) pf.getProxy();
        // write the messages
       1,479 k)

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