Source Code : Simple Before Advice

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Simple Before Advice

/*
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() {
        System.out.print("World");
    }

}
///////////////////////////////////////////////////////////////////////////////////////


import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;

public class SimpleBeforeAdvice implements MethodBeforeAdvice {

    public static void main(String[] args) {
        MessageWriter target = new MessageWriter();

        // create the proxy
        ProxyFactory pf = new ProxyFactory();

        pf.addAdvice(new SimpleBeforeAdvice());
        pf.setTarget(target);

        MessageWriter proxy = (MessageWriter) pf.getProxy();

        // write the messages
        proxy.writeMessage();
    }

    public void before(Method method, Object[] args, Object target)
            throws Throwable {
        System.out.println("Before method: " + method.getName());
    }

}

           
       

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