http://joe5456536.blog.163.com/blog/static/85374773201121164219558/ applicationContext.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean class="org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator" />
<bean id="myAspect" class="com.demo.spring.aop.MyAspect" />
<bean id="helloWorld" class="com.demo.spring.test.HelloWorld"/>
</beans>声明一个切面类 ：
package com.demo.spring.aop;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;@Aspect
public class MyAspect {@Pointcut("execution(* execute(. .)) && target(com.demo.spring.test.HelloWorld)" ) //切入点函数
public void pointcut(){
} @Before("pointcut()") //前置通知 (Before Advice)
public void beforeExecute(JoinPoint thisJoinPoint){连接点类型：" + thisJoinPoint.getKind());
System.out.println("代理类名：" + thisJoinPoint.getSourceLocation().getClass().getName());
System.out.println("目标类名：" + thisJoinPoint.getTarget().getClass().getName());
System.out.println("目标函数名：" + thisJoinPoint.getSignature().getName());
System.out.println("参数个数：" + thisJoinPoint.getArgs().length); System.out.println("Before Advice!");
} @AfterReturning(pointcut = "pointcut()", returning = "retVal") //返回后通知(After returning Advice)
public void afterExecuet(Object retVal){
System.out.println("返回值为：" + retVal);
} @AfterThrowing(pointcut = "pointcut()", throwing = "ex") //抛出异常后通知(After Throwing Advice)
public void afterThrowing(Exception ex){
System.out.println("Throwing "+ex);
} @After("pointcut() && args(arg, . .)") //后通知 (After Advice)
public void afterExecute(Obecjt arg){ System.out.print("参数值为：" + args);
System.out.print("After Advice!");
} @Around("pointcut()") //环绕通知（Around Advice）
public Object userOperate(ProceedingJoinPoint thisJoinPoint) throws Throwable{
System.out.println("Around Advice!");
return thisJoinPoint.proceed();
}
}定义一个目标函数：
package com.demo.spring.test;
import org.springframework.context.ApplicationContext;
public class HelloWorld {
public String execute(String message){
System.out.println("Hello " + message + "!");return "Goodbye message;
} public static void main(String[] args){
//ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
ApplicationContext ctx = new FileSystemXmlApplicationContext("applicationContext.xml");
HelloWorld helloWorld = (HelloWorld)ctx.getBean("helloWorld");
helloWorld.execute("World");
}
}
