Spring定时任务注解实现定时清空指定文件夹下的文件
@EnableScheduling和@Scheduled(cron = "0 0 4 * * ?"),通过注解方式实现定时任务:
1 import org.slf4j.Logger; 2 import org.slf4j.LoggerFactory; 3 import org.springframework.scheduling.annotation.EnableScheduling; 4 import org.springframework.scheduling.annotation.Scheduled; 5 import org.springframework.stereotype.Component; 6 import java.io.File; 7 import java.util.Date; 8 9 /** 10 * Created by xxx on 2018-11-17. 11 */ 12 @Component 13 @EnableScheduling 14 public class InitTaskConfig { 15 private static Logger logger = LoggerFactory.getLogger(InitTaskConfig.class); 16 /** 17 *设置定时任务 18 */ 19 @Scheduled(cron = "0 0 4 * * ?") 20 public void deleteEmailFileTask(){ 21 logger.info ("清空邮件附件临时文件夹的定时任务开始"); 22 Date date = new Date(System.currentTimeMillis() - 1000 * 60 * 60*4); 23 File folder = new File(ConfigUtils.get("pdpm.app.delegate.filepath")); 24 File[] files = folder.listFiles(); 25 for (int i=0;i<files.length;i++){ 26 File file = files[i]; 27 if (new Date(file.lastModified()).before(date)){ 28 file.delete(); 29 } 30 } 31 logger.info ("清空邮件附件临时文件夹的定时任务结束"); 32 } 33 }
本代码实现的了,每天4点,清空指定文件夹下,文件的最后修改时间是上一工作日及之前的所有文件~