SSM[spring] 基于xml的AOP使用

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示例代码

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<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.2.25.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.7</version>
    </dependency>
</dependencies>
[IAccountService]
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package com.gphper;

public interface IAccountService {
    void saveAccount();

    void updateAccount(int i);

    void deleteAccount();
}
[AccountServiceImp]
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package com.gphper.Imp;

import com.gphper.IAccountService;

public class AccountServiceImp implements IAccountService {
    @Override
    public void saveAccount() {
        System.out.println("保存账号成功");
    }

    @Override
    public void updateAccount(int i) {
        System.out.println("更新账号id"+i);
    }

    @Override
    public void deleteAccount() {
        System.out.println("删除账号成功");
    }
}
[LogUtil]
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package com.gphper.utils;

public class LogUtil {
    public void printLog(){
        System.out.println("打印日志输出········");
    }
}
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<?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
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd">

    <bean id="accountService" class="com.gphper.Imp.AccountServiceImp"></bean>

    <bean id="log" class="com.gphper.utils.LogUtil"></bean>

    <!--
      表达式的写法
      1.修饰可以不用写
      2.可以使用 * 代替任意返回值
      3.使用 *.. 表示任意包及其下的子包
      4.使用 *.* 表示任意类的任意方法
      5.使用 (..) 匹配任意数量的参数 (*) 匹配带有一个参数的方法
      -->

    <aop:config>
        <aop:aspect id="logAop" ref="log">
            <aop:before method="printLog" pointcut="execution(* *..*.*(..))"></aop:before>
        </aop:aspect>
    </aop:config>

    <!-- 还可以这样写 -->
    <aop:config>
        <aop:aspect id="logAop" ref="log">
            <aop:before method="printLog" pointcut-ref="pt1"></aop:before>
            <!-- 避免多个切片做成重复写 expression-->
            <!--  aop:pointcut 也可以定义在 aop:aspect外面-->
            <aop:pointcut id="pt1" expression="execution(* *..*.*(..))"/>
        </aop:aspect>
    </aop:config>
</beans>
[Test]
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package com.test;

import com.gphper.IAccountService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ApoTest {

    public static void main(String[] args) {

        ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");

        IAccountService as = (IAccountService)ac.getBean("accountService");

        as.saveAccount();

    }
}

环绕通知

[LogUtil]
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package com.gphper.utils;

import org.aspectj.lang.ProceedingJoinPoint;

public class LogUtil {
    
    public Object aroundNotify(ProceedingJoinPoint pjp){

        Object valObj = null;
        try {
            Object[] args = pjp.getArgs();
            System.out.println("通知前····");
            valObj = pjp.proceed(args);
            System.out.println("通知后····");
        }catch (Throwable e){

        }

        return valObj;
    }
}
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<bean id="log" class="com.gphper.utils.LogUtil"></bean>
<aop:config>
    <aop:aspect id="logAop" ref="log">
        <aop:around method="aroundNotify" pointcut-ref="pt1"></aop:around>
        <!-- 避免多个切片做成重复写 expression-->
        <aop:pointcut id="pt1" expression="execution(* *..*.*(..))"/>
    </aop:aspect>
</aop:config>