Spring AOP 之 AroundAdviceDemo

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);
    }
}

 

LogInterceptor.java

package onlyfun.caterpillar;

import java.util.logging.Level;
import java.util.logging.Logger;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class LogInterceptor implements MethodInterceptor {
    private Logger logger =
            Logger.getLogger(this.getClass().getName());
   
   public Object invoke(MethodInvocation methodInvocation)
                                           throws Throwable {
        logger.log(Level.INFO,
           "method starts..." + methodInvocation.getMethod());
       
        Object result = null;
       
        try {
          result = methodInvocation.proceed();
        }
        finally {
            logger.log(Level.INFO,
               "method ends..." +
               methodInvocation.getMethod() + "/n");
        }

        return result;
   }
}

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"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
 
    <bean id="logInterceptor"
          class="onlyfun.caterpillar.LogInterceptor"/>

    <bean id="helloSpeaker"
          class="onlyfun.caterpillar.HelloSpeaker"/>
   
    <bean id="helloProxy"
         class="org.springframework.aop.framework.ProxyFactoryBean">
        <property name="proxyInterfaces"
                  value="onlyfun.caterpillar.IHello"/>
        <property name="target" ref="helloSpeaker"/>
        <property name="interceptorNames">
            <list>
                <value>logInterceptor</value>
            </list>
        </property>
    </bean>

</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 helloProxy =
            (IHello) context.getBean("helloProxy");
        helloProxy.hello("Justin");
    }
}