一、demo
1、spring项目
(1)pom
html
<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
html
<?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/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
http://www.springframework.org/schema/context
http://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
java
@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();
}
}
java
@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:
java
@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:
java
public class SpringAOPTest {
@Test
public 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());
}
}