SpringAOP切入点规范及获取方法参数的实现

@Pointcut("execution(* com.example.server.service.TeacherService.*(..))")

"execution(* com.example.server.service.TeacherService.uploadExperience(..)) && args(userId)"

    @After("execution(* com.example.server.service.TeacherService.uploadExperience(..)) && args(userId)")
    public void updateLevel(Long userId){
  //代码块，现在就可以在代码块中使用userId
    }

ServletRequestAttributes attr = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
HttpSession session = attr.getRequest().getSession(true);
long userId = (long) session.getAttribute(USER_ID);

HttpServletResponse response = attr.getResponse();
HttpServletRequest request = attr.getRequest();

@Service("studentService")
public class StudentServiceImpl implements StudentService {
    @Override
    public int addStudent(Student student) throws Exception {
            System.out.println("addStudent...业务层代码执行...");
            return 1;
    }
    @Override
    public int deleteStudent(Integer id) throws Exception{
            System.out.println("deleteStudent...业务层代码执行...");
            int i = 1/0;
            return 0;
    }
}

@Aspect
@Component
public class StudentServiceLogger {
    @Before("execution(* com.wuwl.service.impl.StudentServiceImpl.*(..) )")
    public void doBefore(JoinPoint joinPoint){
        Object[] args = joinPoint.getArgs();
        String methodName = joinPoint.getSignature().getName();
        System.out.println(methodName+"方法执行前...");
        System.out.println("参数为："+ Arrays.asList(args));
    }

    @After("execution(* com.wuwl.service.impl.StudentServiceImpl.*(..) )")
    public void doAfter(JoinPoint joinPoint){
        String methodName = joinPoint.getSignature().getName();
        System.out.println(methodName+"方法执行后...");
    }

    @AfterReturning(value = "execution(* com.wuwl.service.impl.StudentServiceImpl.*(..) )" , returning = "returning")
    public void doReturn(JoinPoint joinPoint,Object returning){
        String methodName = joinPoint.getSignature().getName();
        System.out.println(methodName+"方法返回，返回值为:"+returning);
    }

    @AfterThrowing(value = "execution(* com.wuwl.service.impl.StudentServiceImpl.*(..) )",throwing = "ex")
    public void doThrow(JoinPoint joinPoint,Exception ex){
        String methodName = joinPoint.getSignature().getName();
        System.out.println(methodName+"方法异常，异常信息为："+ex.getMessage());
    }
}

public class AopTest {
    ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
    @Test
    public void test1() throws Exception {
        StudentService studentService = ac.getBean("studentService",StudentService.class);
        studentService.addStudent(new Student());
        System.out.println("==================割===============");
        studentService.deleteStudent(1);
    }
}