一、demo
1、spring项目
（1）pom
<dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.3.13.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.3.13.RELEASE</version><scope>runtime</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>4.3.13.RELEASE</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>1.8.10</version></dependency><dependency><groupId>aopalliance</groupId><artifactId>aopalliance</artifactId><version>1.0</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.10</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies>（2）applicationContext.xml配置文件
<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><context:component-scan base-package="com.demo"></context:component-scan><aop:aspectj-autoproxy />
</beans>（3）业务代码
@Service
public class EmployeeService {public int addEmployee(Employee emp) {System.out.println("添加员工成功");return 0;}public int delEmployee(Employee emp) {System.out.println("删除员工成功");return 0;}public int updateEmployee(Employee emp) {System.out.println("修改员工成功");return 0;}public Employee findEmployee(String empno) {System.out.println("查询员工成功");return new Employee();}
}@Service
public class PersonService{public void save(String name) {System.out.println("我是save()方法");}public void update(String name, Integer id) {System.out.println("我是update()方法");}public String getPersonName(Integer id) {System.out.println("我是getPersonName()方法");return "xxx";}}
（4）AOP：
@Aspect
@Component
public class MyInterceptor {@Pointcut("execution (* com.demo.service.PersonService.add*(..))")private void anyMethod() {} // 声明一个切入点，anyMethod为切入点名称@Pointcut("execution (* com.demo.service.EmployeeService.update*(..))")private void anotherMethod() {}// 声明该方法是一个前置通知：在目标方法开始之前执行 @Before("anyMethod()")public void doAccessCheck() {System.out.println("前置通知");}@After(value = "anyMethod()")public void closeResource() {System.out.println("关闭数据库连接");}@Before("anotherMethod()")public void openSession() {System.out.println("开启session");}
}（5）测试：
public class SpringAOPTest {@Testpublic void interceptorTest() {ApplicationContext cxt = new ClassPathXmlApplicationContext("applicationContext.xml");EmployeeService employeeService = (EmployeeService) cxt.getBean("employeeService");
// personService.save("xxx");
// personService.update("zhangsan", 1);
// personService.getPersonName(1);employeeService.updateEmployee(new Employee());}
}
