pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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>
<parent>
<groupId>com.aistart</groupId>
<artifactId>Spring_demo</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>Aspect_demo</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.3.30</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
</dependencies>
</project>
LogAspect.java
package com.aistart.aspect;
import org.aspectj.lang.ProceedingJoinPoint;
public class LogAspect {
public void LogInfoAfter(){
System.out.println("后置日志");
}
public void LogInfoBefore(){
System.out.println("前置日志");
}
public void doAfterReturning(String result) {
System.out.println("后置通知, 返回值: " + result);
}
public void doAfterThrowing(Exception e) {
System.out.println("后置通知, 异常是: " + e);
}
public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
System.out.println("-----------------------");
System.out.println("环绕通知: 进入方法");
Object o = pjp.proceed();
System.out.println("环绕通知: 退出方法");
return o;
}
}
StudentServiceImpl.java
package com.aistart.service.impl;
import com.aistart.service.StudentService;
import org.springframework.stereotype.Service;
@Service
public class StudentServiceImpl implements StudentService {
@Override
public void insertStudent() {
System.out.println("加入一个学生的业务");
// System.out.println(1/0);
}
}
StudentService.java
package com.aistart.service;
public interface StudentService {
void insertStudent();
}
applicationContext.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"
xmlns:context="http://www.springframework.org/schema/context"
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
http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.aistart.service"></context:component-scan>
<context:annotation-config></context:annotation-config>
<!-- <bean id="studentService" class="com.aistart.service.impl.StudentServiceImpl"/>-->
<!--增强类/切面对象-->
<bean id="logAspect" class="com.aistart.aspect.LogAspect"/>
<!-- bean definitions here -->
<aop:config>
<aop:aspect ref="logAspect">
<!--代理的功能-->
<!--execution([修饰符] 返回类型 全限类名.函数名() )-->
<aop:pointcut id="studentServiceCut" expression="execution(* com.aistart.service.impl.StudentServiceImpl.*(..))"/>
<aop:pointcut id="studentServiceCut1" expression="execution(* com.aistart.service.impl.StudentServiceImpl.*(..))"/>
<aop:before method="LogInfoBefore" pointcut-ref="studentServiceCut"></aop:before>
<aop:after method="LogInfoAfter" pointcut-ref="studentServiceCut"></aop:after>
<aop:around method="doAround" pointcut-ref="studentServiceCut"></aop:around>
<aop:after-throwing throwing="e" method="doAfterThrowing" pointcut-ref="studentServiceCut"></aop:after-throwing>
<aop:after-returning returning="result" method="doAfterReturning" pointcut-ref="studentServiceCut"></aop:after-returning>
</aop:aspect>
</aop:config>
</beans>
StudentServiceImplTest.java
package com.aistart.service.impl;
import com.aistart.service.StudentService;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import static org.junit.Assert.*;
public class StudentServiceImplTest {
@Test
public void insertStudent() {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
StudentService studentService = context.getBean( StudentService.class);
studentService.insertStudent();
}
}
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