spring-AOP详解

转载自：http://www.cnblogs.com/garinzhang/p/java_spring_aop_aspect.html

public interface PersonServer {    public void save(String name);    public void update(String name, Integer id);    public String getPersonName(Integer id);}

import org.springframework.stereotype.Component;@Component("personServerBean")public class PersonServerBean implements PersonServer {    public void save(String name) {        System.out.println("save方法");    }    public void update(String name, Integer id) {        System.out.println("update方法");    }    public String getPersonName(Integer id) {        System.out.println("getPersonName方法");        return "myName";    }}

切面类：

import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.*;import org.springframework.stereotype.Component;@Aspect@Componentpublic class MyInterceptor {    @Pointcut("execution(* com.alibaba.aop.PersonServerBean.*(..))")    private void anyMethod(){}    @Before("anyMethod()")    public void doAccessCheck() {        System.out.println("前置通知");    }    @After("anyMethod()")    public void after() {        System.out.println("最终结果");    }    @AfterReturning("anyMethod()")    public void doAfter() {        System.out.println("后置通知");    }    @AfterThrowing("anyMethod()")    public void doAfterThrow() {        System.out.println("例外通知");    }    @Around("anyMethod()")    public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {        System.out.println("进入环绕通知");        Object object = pjp.proceed();        System.out.println("退出方法");        return object;    }    // 顺序: before->method->after->afterReturning}

XML文件配置：

<?xml version="1.0" encoding="GBK"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xmlns:aop="http://www.springframework.org/schema/aop"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">    <!--<context:annotation-config />这个配置可以去掉，在aspject-autoproxy里面包含了这个配置-->        <aop:aspectj-autoproxy />    <context:component-scan base-package="com...." />    <!--<import resource="classpath:tutorial-beans.xml" /> 写到其他文件里面去，引入--></beans>

引用jar包pom文件配置：

<aspect-version>1.8.0</aspect-version><spring-version>3.2.7.RELEASE</spring-version>            <dependency>                <groupId>org.springframework</groupId>                <artifactId>spring-aspects</artifactId>                <version>${spring-version}</version>            </dependency>            <dependency>                <groupId>org.aspectj</groupId>                <artifactId>aspectjrt</artifactId>                <version>${aspect-version}</version>            </dependency>            <dependency>                <groupId>org.aspectj</groupId>                <artifactId>aspectjweaver</artifactId>                <version>${aspect-version}</version>            </dependency>

执行测试类：

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.stereotype.Component;@Component("springAOPTest")public class SpringAOPTest {    public static void main(String[] args) {        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");        PersonServer bean = (PersonServerBean) ctx.getBean("personServerBean");        bean.save("test");    }}

执行结果：

进入环绕通知前置通知save方法退出方法最终结果后置通知

总结-执行顺序：around->before->around->after->afterReturning