Spring AOP 之 BeforeAdviceDemo

平台：Spring2.5

 

IHello.java   HelloSpeaker.java  log4j.properties和AroundAdviceDemo2相同

LogBeforeAdvice.java

package onlyfun.caterpillar;

import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.springframework.aop.MethodBeforeAdvice;

public class LogBeforeAdvice
        implements MethodBeforeAdvice {
    private Logger logger =
            Logger.getLogger(this.getClass().getName());
   
    public void before(Method method, Object[] args,
                     Object target) throws Throwable {
        logger.log(Level.INFO,
                "method starts..." + method);
   }
}

 

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="logBeforeAdvice"
          class="onlyfun.caterpillar.LogBeforeAdvice"/>

    <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>logBeforeAdvice</value>
            </list>
        </property>
    </bean>

</beans>

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");
    }
}