Spring AOP 之 AfterAdviceDemo3

平台：spring2.5

 

IHello.java：

package onlyfun.caterpillar;

public interface IHello {
    public void hello(String name);
}

 

HelloSpeaker.java

package onlyfun.caterpillar;

public class HelloSpeaker implements IHello {
    public void hello(String name) {
        System.out.println("Hello, " + name);
    }
}

 

LogAspect.java

 

package onlyfun.caterpillar;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LogAspect {
    private Logger logger =
            Logger.getLogger(this.getClass().getName());
   
    @Pointcut("execution(* onlyfun.caterpillar.IHello.*(..))")
    private void logging() {}
   
    @Before("logging()" )
    public void before(JoinPoint jointPoint) {
        logger.log(Level.INFO, "method starts..." +
            jointPoint.getSignature().getDeclaringTypeName() +
            "." + jointPoint.getSignature().getName());
   }

   @AfterReturning(pointcut="logging()", returning="retVal")
   public void afterReturning(JoinPoint jointPoint, Object retVal) {
        logger.log(Level.INFO, "method ends..." +
            jointPoint.getSignature().getDeclaringTypeName() +
            "." + jointPoint.getSignature().getName());
   }
}

 

applicationContext.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"
  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="logAdvice"
          class="onlyfun.caterpillar.LogAspect"/>

    <bean id="helloSpeaker"
          class="onlyfun.caterpillar.HelloSpeaker"/>

    <aop:aspectj-autoproxy/>

</beans>

 

log4j.properties

log4j.rootLogger=WARN, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

 

test.java

package onlyfun.caterpillar;

import org.springframework.context.ApplicationContext;
import org.springframework.context.
              support.ClassPathXmlApplicationContext;

public class test{
    public static void main(String[] args) {
        ApplicationContext context =
                new ClassPathXmlApplicationContext(
                        "beans-config.xml");
        IHello helloSpeaker =
            (IHello) context.getBean("helloSpeaker");
        helloSpeaker.hello("Justin");
    }
}