package com.wrox.begspring;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class CalculateSpringAOP {
 private Operation ops;
 private ResultWriter wtr;
public void setOps(Operation ops) {
 this.ops = ops;
}
public void setWriter(ResultWriter writer) {
 wtr = writer;
}
public static void main(String[] args) {
 ApplicationContext context =
 new ClassPathXmlApplicationContext(
 "beans.xml");
 BeanFactory factory = (BeanFactory) context;
 CalculateSpringAOP calc =
 (CalculateSpringAOP) factory.getBean("opsbean");
 calc.execute(args);
}


 public void execute(String [] args) {
 long op1 = Long.parseLong(args[0]);
 long op2 = Long.parseLong(args[1]);
 wtr.showResult("The result of " + op1 +
 ops.getOpsName() + op2 + " is "
 + ops.operate(op1, op2) + "!");
 }
}
 

<beans xmlns=”http://www.springframework.org/schema/beans”
 xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
 xmlns:aop=”http://www.springframework.org/schema/aop”
 xsi:schemaLocation=”http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
 http://www.springframework.org/schema/aop
 http://www.springframework.org/schema/aop/spring-aop-2.0.xsd”>
 <bean id=”screen” class=”com.wrox.begspring.ScreenWriter” />
 <bean id=”multiply” class=”com.wrox.begspring.OpMultiply” />
 <bean id=”opsbean” class=”com.wrox.begspring.CalculateSpringAOP”
 autowire=”byType”/>
 <aop:aspectj-autoproxy/>
 <bean id=”logaspect” class=”com.wrox.begspring.aspects.LoggingAspect”/>
 </beans>
 

package com.wrox.begspring.aspects;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
@Aspect
public class LoggingAspect {
 @Before("execution(* com.wrox.begspring.Operation.*(..))”)
 public void logMethodExecution(JoinPoint jp) {
 System.out.println("AOP logging -> "
 + jp.toShortString() );
 }
}