spring中基于XML的各种通知AOP

通知分为前置通知、后置通知、异常通知、后置返回通知、环绕通知

其中环绕通知中相当于包含了前置通知、后置通知、异常通知 外加一个最终通知

直接上代码

pom文件中导包

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.1.9.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.4</version>
    </dependency>
</dependencies>

接口中的三个方法

public interface IAccountService {
    void saveAccount();
    void updateAccount(int i,int j);
    int deleteAccount();
}
实现类中的三个方法

public class AccountServiceImpl implements IAccountService {
    public void saveAccount() {
        System.out.println("保存账户信息");
    }
    public void updateAccount(int i,int j) {
        int m= 1/0;  //测试异常通知时可以解开注释
        System.out.println("修改金额："+i);
    }
    public int deleteAccount() {
        System.out.println("删除账户");
        return 0;
    }
}
工具Logger中增加一个通知方法

public class Logger {
    public void beforePrintLogger(){
        System.out.println("前置通知打印日志。。。");
    }
    public void afterPrintLogger(){
        System.out.println("后置通知打印日志。。。");
    }
    public void retrunPrintLogger(){
        System.out.println("返回通知通知打印日志。。。");
    }
    public void exceptionPrintLogger(){
        System.out.println("异常通知打印日志。。。");
    }
    public Object aroundPrintLogger(ProceedingJoinPoint pjp){
        Object rtValue=null;
        try {
            System.out.println("环绕通知打印日志。。。业务方法执行前的代码相当于前置通知");
            Object[] args=pjp.getArgs();
            rtValue = pjp.proceed(args);
            System.out.println("环绕通知打印日志。。。业务方法执行厚的代码相当于后置通知");
            return rtValue;
        } catch (Throwable throwable) { //这里的异常类型必须是Throwable类型
            System.out.println("环绕通知打印日志。。。这里相当于异常通知");
            throw  new RuntimeException(throwable);
        }
        finally {
            System.out.println("环绕通知打印日志。。。这里相当于返回通知");
        }

    }
}

 

配置Bean.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="accountService" class="com.itheima.aop.AccountServiceImpl"></bean>

    <bean id="logger" class="com.itheima.utils.Logger"></bean>

    <!--com.itheima.aop.AccountServiceImpl.saveAccount()-->
    <aop:config>
        <!--pointcut可以放置到切面外所哟切面均可引用，但必须放到引用他的切面的最上边-->
        <aop:pointcut id="accountPoint" expression="execution(* *..*(int,int))"></aop:pointcut>
        <aop:aspect id="logAdvicer" ref="logger">
            <aop:before method="beforePrintLogger" pointcut="execution(* *..*(int,int))"></aop:before>
            <aop:after method="afterPrintLogger" pointcut-ref="accountPoint"></aop:after>
            <aop:after-returning method="retrunPrintLogger" pointcut-ref="accountPoint"></aop:after-returning>
            <aop:after-throwing method="exceptionPrintLogger" pointcut-ref="accountPoint"></aop:after-throwing>


            <aop:around method="aroundPrintLogger"  pointcut-ref="accountPoint"></aop:around>
            <!--pointcut可以放置在切面内，此时只能当前切面内引用-->
            <!--<aop:pointcut id="accountPoint" expression="execution(* *..*(int,int))"></aop:pointcut>-->
        </aop:aspect>
    </aop:config>

</beans>

 

测试类

public class Client {

    public static void main(String[] args) {
        ApplicationContext ac=new ClassPathXmlApplicationContext("Bean.xml");
        IAccountService accountService = (IAccountService)ac.getBean("accountService");
//        accountService.saveAccount();
        accountService.updateAccount(1,2);
//        accountService.deleteAccount();
    }
}