Spring 使用xml配置aop

Posted 2020-10-22 junge8619

1.xml文件需要引入aop命名空间

2.xml内容：

<?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"
    xmlns:context="http://www.springframework.org/schema/context"
    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-4.3.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
        
    <context:component-scan base-package="com.junge.demo"></context:component-scan>

    <aop:config>
        <aop:aspect id="logAspect" ref="myLog">
            <aop:pointcut expression="execution (* com.junge.demo.spring.dao..*(..))" id="point_cut"/>
            <!-- <aop:before method="beforeFunc" pointcut-ref="point_cut"/>
            <aop:after method="afterFunc" pointcut-ref="point_cut"/>
            <aop:after-returning method="returnFunc" pointcut-ref="point_cut"/>
            <aop:after-throwing method="throwExpFunc" pointcut-ref="point_cut" throwing="e"/> -->
            <aop:around method="aroundFunc" pointcut-ref="point_cut"/>
        </aop:aspect>
    </aop:config>
</beans>

切点的配置：使用一个星号*是匹配所有（同级的）；使用2个点..匹配任意（同级和任意子级），如:

execution (* com.junge.demo.spring.dao.*.*(..)) 匹配dao包下所有类的所有方法

execution (* com.junge.demo.spring.dao..*(..))  匹配dao包下所有类，包括子类的子类(以及子类的子类的子类等)的所有方法。

3.日志类（通知配置，可以获取被拦截方法的参数、返回结果、异常信息）

package com.junge.demo.spring.advice;

import org.aspectj.lang.ProceedingJoinPoint;
import org.springframework.stereotype.Component;

import com.alibaba.fastjson.JSONObject;

@Component("myLog")
public class MyLogImpl {

    public void beforeFunc() {
        System.out.println("beforeFunc ...");

    }

    public void afterFunc() {
        System.out.println("afterFunc ...");

    }

    public void returnFunc() {
        System.out.println("returnFunc ...");

    }

    public void throwExpFunc(Exception e) {
        System.out.println("throwExpFunc ...");
        System.out.println(e.getMessage());

    }

    public void aroundFunc(ProceedingJoinPoint point) {
        System.out.println("arount before invoke ...");
        
        if (null != point.getArgs() && point.getArgs().length > 0) {
            for (Object arg : point.getArgs()) {
                System.out.println("args:" + JSONObject.toJSON(arg));
            }
        }
        System.out.println(point.getTarget());
        System.out.println(point.getThis());
        System.out.println(point.getKind());
        System.err.println(point.getClass());
        System.out.println(point.getSignature());
        
        try {
            Object result = point.proceed();
            System.out.println("result:" + JSONObject.toJSONString(result));
            System.out.println("after return ...");
        } catch (Throwable e) {
            e.printStackTrace();
            System.out.println("arount after throws ...");
        }
        
        System.out.println("after ...");

    }

}

4.运行结果

 

5.spring和aop匹配的包maven配置如下，其中aspectjweaver和aspectjrt需要用1.8.11，用高版本的报错

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.junge.demo</groupId>
  <artifactId>spring-demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>spring-demo</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.44</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.3.13.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>4.3.13.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.11</version>
    </dependency>

    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>1.8.11</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.3.13.RELEASE</version>
    </dependency>
  </dependencies>
</project>