@Configuration //1.主要用于标记配置类
@EnableScheduling // 2.开启定时任务
public class SaticScheduleTask {
@Resource
UserService userService;
//3.添加定时任务 每隔5秒调用一次
@Scheduled(cron = "0/5 * * * * ?")
public void configureTasks() {
userService.addUser();
System.err.println("执行静态定时任务时间: " + LocalDateTime.now());
}
}

@Configuration //1.主要用于标记配置类，兼备Component的效果。
@EnableScheduling // 2.开启定时任务
@EnableAsync // 2.开启多线程
public class SaticScheduleTask {
@Resource
UserService userService;
//3.添加定时任务
@Scheduled(cron = "0/5 * * * * ?")
@Async //异步方法 异步调用 默认为同步
@Transactional //添加事务
public void configureTasks() {
userService.addUser();
System.err.println("执行静态定时任务时间: " + LocalDateTime.now());
}
}

2.拦截器

1. 实现HandlerInterceptor接口

@Component
public class LoginInterceptor implements HandlerInterceptor {
//preHandle是请求执行前执行的
@Override
public boolean preHandle(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse, Object o) throws Exception {
System.out.println("进入拦截器");
return true;
}
//postHandler是请求结束执行的 当preHandle返回true才会执行
public void postHandle.....
//afterCompletion是视图渲染完成后才执行
public void afterCompletion.....
}

@Configuration
public class WebJavaBeanConfiguration implements WebMvcConfigurer {
@Autowired
private LoginInterceptor loginInterceptor;
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(loginInterceptor)
.addPathPatterns("/**")
.excludePathPatterns("/user/login")
.excludePathPatterns("/user/logout");
}
}