Spring AOP使用

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1. 使用Spring AOP API配置

package aop.springaop;public class HelloBean { public String sayHello(String name, int age) { // TODO Auto-generated method stub return "hello, my name is " + name + " and I am " + age; } public String sayHi(String name, int age) { // TODO Auto-generated method stub return "Hi, my name is " + name + " and I am " + age; } public String greeting() { return "hey, dude......"; }}=================package aop.springaop;import org.aopalliance.intercept.MethodInterceptor;import org.aopalliance.intercept.MethodInvocation;public class HelloInterceptor implements MethodInterceptor { public Object invoke(MethodInvocation methodInvocation) throws Throwable { // TODO Auto-generated method stub System.out.println("Before invoking " + methodInvocation.getMethod().getName()); Object ret = methodInvocation.proceed(); System.out.println("Return value=" + ret); System.out.println("After invoking " + methodInvocation.getMethod().getName()); System.out.println("=========================================================="); return ret; }}===================package aop.springaop;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class TestSpringAOP { ApplicationContext beans = new ClassPathXmlApplicationContext("aop/springaop/aop.xml"); public void testAOP() { HelloBean bean = (HelloBean) beans.getBean("helloProxy"); bean.sayHello("vampire", 25); bean.sayHi("Terry", 22); bean.greeting(); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub TestSpringAOP test = new TestSpringAOP(); test.testAOP(); }}=============Place aop.xml under the springaop package<?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"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><bean id="helloBean" class="aop.springaop.HelloBean" /><bean id="helloBeanInterceptor" class="aop.springaop.HelloInterceptor" /><bean id="helloBeanAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> <property name="patterns"> <list> <value>.*say.*</value> </list> </property> <property name="advice" ref="helloBeanInterceptor"></property></bean><bean id="helloProxy" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="target" ref="helloBean" /> <property name="interceptorNames"> <list> <value>helloBeanAdvisor</value> </list> </property></bean></beans>

主要是使用Spring的ProxyFactoryBean, 配置好advisor(包含pointcut和advice)

我们可以使用NameMatchMethodPointcutAdvisor或者RegexpMethodPointcutAdvisor

2. 使用ASPECTJ样式的XML配置

package aop;public class OriginalBean { public String sayHello(String name, int age) { String str = "Hello I am " + name + ", I am " + age + " years old."; return str; }}=============package aop;import org.aspectj.lang.ProceedingJoinPoint;//import org.springframework.util.StopWatch;public class OriginalBeanAdvice { public void beforeAdvice(String name, int age) throws Throwable { System.out.println("I am before advice......"); //return call.proceed(); } public Object aroundAdvice(ProceedingJoinPoint call, String name, int age) throws Throwable { System.out.println("I am around advice......"); try { Object ret = call.proceed(); System.out.println(call.toLongString() + " invoked."); return ret; } finally { } }}=============package aop;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class TestAspectJ { ApplicationContext beans = new ClassPathXmlApplicationContext("aop/aop.xml"); public void testAOPAcound() { OriginalBean bean = (OriginalBean) beans.getBean("originalBean"); bean.sayHello("vampire", 25); } // public String sayHello(String name, int age) {// String str = "Hello I am " + name + ", I am " + age + " years old.";// return str;// } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub TestAspectJ test = new TestAspectJ(); test.testAOPAcound(); }}=============aop.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"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><bean id="originalBean" class="aop.OriginalBean" /><bean id="originalBeanAdvice" class="aop.OriginalBeanAdvice" /><aop:config>  <aop:aspect id="originalBeanAspect" ref="originalBeanAdvice"> <aop:pointcut id="sayHelloPointCut" expression="execution(* aop.OriginalBean.sayHello(String,int)) and args(name, age)" /> <aop:around pointcut-ref="sayHelloPointCut" method="aroundAdvice" /> </aop:aspect>  <aop:aspect id="originalBeanAspect1" ref="originalBeanAdvice"> <aop:pointcut id="sayHelloPointCut1" expression="execution(* aop.OriginalBean.sayHello(String,int)) and args(name, age)" /> <aop:before pointcut-ref="sayHelloPointCut1" method="beforeAdvice" /> </aop:aspect></aop:config></beans>

使用这个样式其实简单些.

3. ASPECTJ 使用到annotation的配置（To be continued）

4. 特殊的关于事物的 TransactionProxyFactoryBean以及aspectj style tx:advice

（To be continued）