Spring的xml文件配置方式实现AOP

配置文件与注解方式的有很大不同，多了很多配置项。

beans2.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: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-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
     <aop:aspectj-autoproxy />
    <bean id="personService" class="test.spring.service.impl.PersonServiceBean"></bean>
    <bean id="myInterceptor" class="test.spring.aop.MyInterceptor2"></bean>
    <aop:config>
           <aop:aspect id="myAspect" ref="myInterceptor">
                    <aop:pointcut  id="myPointCut"  expression="execution(* test.spring.service.impl.PersonServiceBean.*(..))" />
                    <aop:before pointcut-ref="myPointCut" method="doAccessCheck" />
                    <aop:after-returning pointcut-ref="myPointCut"  method="doAfterReturning" />
                    <aop:after-throwing pointcut-ref="myPointCut"  method="doAfterThrowing" />
                    <aop:around pointcut-ref="myPointCut" method="doAround" />
                    <aop:after pointcut-ref="myPointCut" method="doAfter" />
           </aop:aspect>
    </aop:config>
</beans> 

      切面的切入点语法定义

• 拦截test.spring.service.impl.PersonServiceBean下的所有方法
  expression="execution(* test.spring.service.impl.PersonServiceBean.*(..))"
  
• 拦截test.spring.service.impl子包下的所有类的所有方法
  expression="execution(* test.spring.service.impl..*.*(..))"
  
• 拦截test.spring.service.impl.PersonServiceBean下的所有返回值为String类型的方法
  expression="execution(java.lang.String test.spring.service.impl.PersonServiceBean.*(..))"
  
• 拦截test.spring.service.impl.PersonServiceBean下的所有方法中第一个参数类型为String的方法
  expression="execution(* test.spring.service.impl.PersonServiceBean.*(java.lang.String,..))"

package test.spring.service.impl;

import test.spring.service.PersonService;

//代理对象实现目标对象所有接口
public class PersonServiceBean implements PersonService {

    public PersonServiceBean() {

    }

    @Override
    public void save(String name) {
        System.out.println("save()->>" + name);
        throw new RuntimeException(">>----自定义异常----<<");
    }

    @Override
    public String getResult() {
        return "getResult()==>>返回结果";
    }

}

package test.spring.aop;

import org.aspectj.lang.ProceedingJoinPoint;

public class MyInterceptor2 {

    public void doAccessCheck() {
        System.out.println("前置通知-->>");
    }

    public void doAfterReturning() {
        System.out.println("后置通知-->>");
    }

    public void doAfter() {
        System.out.println("最终通知");
    }

    public void doAfterThrowing() {
        System.out.println("异常通知-->");
    }

    public Object doAround(ProceedingJoinPoint pJoinPoint) throws Throwable {
        System.out.println("环绕通知");
        // 这里如果pJoinPoint.proceed()不执行，后面拦截到的方法都不会执行，非常适用于权限管理
        Object result = pJoinPoint.proceed();
        System.out.println("退出");
        return result;
    }

}

package test.spring.junit;

import org.junit.Test;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import test.spring.service.PersonService;

public class AOPTest3 {

    @Test
    public void test() {
        AbstractApplicationContext aContext = //
        new ClassPathXmlApplicationContext("beans2.xml");
        PersonService pService = (PersonService) aContext
                .getBean("personService");
        pService.save("LinDL");
        pService.getResult();
        aContext.close();
    }

}