首先实现对应接口

import org.apache.commons.io.monitor.FileAlterationListenerAdaptor;

import java.io.File;

public class FilterListener extends FileAlterationListenerAdaptor {
    @Override
    public void onDirectoryCreate(File directory) {
        System.out.println("sdafsdfsafd");
    }

    @Override
    public void onDirectoryChange(File directory) {
        System.out.println("sdafsdfsafd");
    }

    @Override
    public void onDirectoryDelete(File directory) {
        System.out.println("sdafsdfsafd");
    }
}

其次写对应监听器

import org.apache.commons.io.filefilter.FileFilterUtils;
import org.apache.commons.io.filefilter.HiddenFileFilter;
import org.apache.commons.io.filefilter.IOFileFilter;
import org.apache.commons.io.monitor.FileAlterationMonitor;
import org.apache.commons.io.monitor.FileAlterationObserver;

import java.io.File;
import java.util.concurrent.TimeUnit;

public class wertwert {

    public FileAlterationMonitor getMonitor(){
        IOFileFilter directories = FileFilterUtils.and(FileFilterUtils.directoryFileFilter(), HiddenFileFilter.VISIBLE);
        IOFileFilter files = FileFilterUtils.and(FileFilterUtils.fileFileFilter(), FileFilterUtils.suffixFileFilter(".log"));
        IOFileFilter fileFilter = FileFilterUtils.or(directories,files);

        FileAlterationObserver observer = new FileAlterationObserver(new File("E://325345"),fileFilter);
        observer.addListener(new FilterListener());
        return new FileAlterationMonitor(TimeUnit.SECONDS.toMillis(1),observer);

    }
}

最后实现springboot的CommandLineRunner

@Component
class ctt implements CommandLineRunner {
    private wertwert wertwert1 = new wertwert();
    @Override
    public void run(String... args) throws Exception {
        System.out.println("asdf");
        FileAlterationMonitor fileAlterationMonitor = wertwert1.getMonitor();
        try{
            fileAlterationMonitor.start();
        }catch (Exception e){
            System.out.println("asdfasdf");
        }
    }
}