Hutool监听文件工具类的demo

@RestController
public class Watch {
    // 服务启动就执行该方法	
    @PostConstruct
    public void  monitor() {
        File file = FileUtil.file("D:\\test.xlsx");
        //这里只监听文件或目录的修改事件
        WatchMonitor watchMonitor = WatchMonitor.create(file, WatchMonitor.ENTRY_MODIFY);
        watchMonitor.setWatcher(new Watcher(){
            @Override
            public void onCreate(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("创建：{}-> {}", currentPath, obj);
            }
            @Override
            public void onModify(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("修改：{}-> {}", currentPath, obj);
            }
            @Override
            public void onDelete(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("删除：{}-> {}", currentPath, obj);
            }
            @Override
            public void onOverflow(WatchEvent<?> event, Path currentPath) {
                Object obj = event.context();
                Console.log("Overflow：{}-> {}", currentPath, obj);
            }
        });
        //设置监听目录的最大深入，目录层级大于制定层级的变更将不被监听，默认只监听当前层级目录
        watchMonitor.setMaxDepth(3);
        //启动监听
        watchMonitor.start();

    }

}