核心概念：
切面，Aspect：其实就是我们需要定义的AOP类，它对功能类似的代码进行封装。
导包：
导包
实现代码：
package com.spring.aop;
import java.util.Date;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
@Aspect
public class LogAop {
@Before("execution(public void com.spring.dao.impl.StudentDaoImpl.*(..))")
public void logBefore(){
Date date=new Date();
System.out.println("在方法执行之前执行日志------");
}
}
package com.spring.dao;
public interface StudentDao {
public void insert();
public void update();
}
package com.spring.aop;
import java.util.Date;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
@Aspect
public class LogAop {
@Before("execution(public void com.spring.dao.impl.StudentDaoImpl.*(..))")
public void logBefore(){
Date date=new Date();
System.out.println("在方法执行之前执行日志------");
}
}
package com.spring.dao;
public interface StudentDao {
public void insert();
public void update();
}
package com.spring.dao.impl;
import com.spring.dao.StudentDao;
public class StudentDaoImpl implements StudentDao {
@Override
public void insert() {
System.out.println("method insert");
}
@Override
public void update() {
System.out.println("update method!");
}
}
package com.spring.services;
import com.spring.dao.StudentDao;
public class StudentServices {
private StudentDao dao;
public void setDao(StudentDao dao) {
this.dao = dao;
}
public void insert() {
dao.insert();
}
public void update(){
dao.update();
}
}
package com.spring.test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.spring.services.StudentServices;
public class test01 {
public static void main(String[] args) {
ApplicationContext context=new ClassPathXmlApplicationContext("bean-aop-annotation.xml");
StudentServices ss=(StudentServices) context.getBean("studentServices");
ss.insert();
ss.update();
}
}
XML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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<bean id="studentServices" class="com.spring.services.StudentServices">
<property name="dao" ref="studentDao"></property>
</bean>
<bean id="studentDao" class="com.spring.dao.impl.StudentDaoImpl">
</bean>
<bean id="logAop" class="com.spring.aop.LogAop"></bean>
</beans>
运行结果：
在方法执行之前执行日志------
method insert
在方法执行之前执行日志------
update method!
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