切面类StudentServiceAspect.java
package com.su.advice; import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint; public class StudentServiceAspect { public void doBefore(JoinPoint jp){
System.out.println("类名:"+jp.getTarget().getClass().getName());
System.out.println("方法名:"+jp.getSignature().getName());
System.out.println("开始添加学生:");
} public void doAfter(JoinPoint jp){
System.out.println("类名:"+jp.getTarget().getClass().getName());
System.out.println("方法名:"+jp.getSignature().getName());
System.out.println("学生添加完成:"+jp.getArgs()[]);
} public Object doAround(ProceedingJoinPoint pjp) throws Throwable{
System.out.println("添加学生前");
Object retVal=pjp.proceed();
System.out.println(retVal);
System.out.println("添加学生后");
return retVal;
} public void doAfterReturning(JoinPoint jp){
System.out.println("返回通知");
} public void doAfterThrowing(JoinPoint jp,Throwable ex){
System.out.println("异常通知");
System.out.println("异常信息:"+ex.getMessage());
}
}
接口StudentService
package com.su.service; public interface StudentService { public void addStudent(String name);
}
接口的实现类StudentServiceImpl
package com.su.service.impl; import com.su.service.StudentService; public class StudentServiceImpl implements StudentService{ @Override
public void addStudent(String name) {
// System.out.println("开始添加学生"+name);
System.out.println("添加学生"+name);// System.out.println("完成学生"+name+"的添加");
} }
测试类
package com.su.test; import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; import com.su.service.StudentService; public class T { public static void main(String[] args) {
ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");
StudentService studentService=(StudentService)ac.getBean("studentService");
studentService.addStudent("张三"); } }
xml文件配置(切面、切点配置)
<?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="studentServiceAspect" class="com.su.advice.StudentServiceAspect"></bean> <bean id="studentService" class="com.su.service.impl.StudentServiceImpl"></bean> <aop:config>
<aop:aspect id="studentServiceAspect" ref="studentServiceAspect">
<aop:pointcut expression="execution(* com.su.service.*.*(..))" id="businessService"/>
<aop:before method="doBefore" pointcut-ref="businessService"/><!-- 将doBefore切入 切点配置的方法中 -->
<aop:after method="doAfter" pointcut-ref="businessService"/>
<aop:around method="doAround" pointcut-ref="businessService"/>
<aop:after-returning method="doAfterReturning" pointcut-ref="businessService"/>
<aop:after-throwing method="doAfterThrowing" pointcut-ref="businessService" throwing="ex"/>
</aop:aspect>
</aop:config>
</beans>
如果只配置doBefore、doAfter,只切入这两个方法的话,执行结果如图