学习笔记：AOP(before、after)
代码(转bea)
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- mypack.MethodTracing-->
<!-- Bean configuration -->
<bean id="businesslogicbean"
/>
</property>
<property name="interceptorNames">
<list>
<value>theTracingBeforeAdvisor</value>
<value>theTracingAfterAdvisor</value>
</list>
</property>
</bean>
<!-- Bean Classes -->
<bean id="beanTarget" />
<!-- Advisor pointcut definition for before advice -->
<bean id="theTracingBeforeAdvisor"
/>
</property>
<property name="pattern">
<value>.*</value>
</property>
</bean>
<!--<value>.*</value>：该表达式选择advisor所关联到的一个或多个bean上的所有联结点。 -->
<!--<value>./IBusinessLogic/.foo</value>：该表达式只选择IbusinessLogic接口上的foo()方法的联结点。-->
<!--如果是advisor所关联到的bean，则该表达式只选择IBusinessLogic接口上的联结点。 -->
<!-- Advisor pointcut definition for after advice -->
<bean id="theTracingAfterAdvisor"
/>
</property>
<property name="pattern">
<value>.*</value>
</property>
</bean>
<!-- Advice classes -->
<bean id="theTracingBeforeAdvice" />
<bean id="theTracingAfterAdvice" />
</beans>
IBusinessLogic
public interface IBusinessLogic {public void foo();}public class BusinessLogic implements IBusinessLogic {public void foo() { System.out.println( "Inside BusinessLogic.foo()"); }}public class TracingAfterAdvice implements AfterReturningAdvice {public void afterReturning(Object arg0, Method arg1, Object[] arg2,Object arg3) throws Throwable {System.out.println( "Hello world! (by " + this.getClass().getName() + ")");}}public class TracingBeforeAdvice implements MethodBeforeAdvice {public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable {System.out.println( "Hello world! (by " + this.getClass().getName() + ")");}}public class MainApplication {/** * @param args */public static void main(String[] args) {// Read the configuration file// ApplicationContext ctx = new FileSystemXmlApplicationContext("springconfig.xml");ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml"); //Instantiate an object IBusinessLogic testObject = (IBusinessLogic) ctx.getBean("businesslogicbean"); // Execute the public // method of the bean testObject.foo();}} 1 楼 raykcn 2007-01-05 希望还有下文.... 2 楼 lighter 2007-01-05 就我自身用过的情况来说.