删除某目录下n天之前的文件

来源：互联网发布：js面试题及答案2016 编辑：程序博客网时间：2024/05/17 23:42
功能：删除N天之前的文件import java.io.File;import java.util.Date;import java.util.Iterator;import org.apache.commons.io.FileUtils;import org.apache.commons.io.filefilter.FileFileFilter;import org.apache.commons.io.filefilter.FileFilterUtils;import org.apache.commons.io.filefilter.IOFileFilter;import org.apache.commons.io.filefilter.TrueFileFilter;public class FileTools{    public static void deleteFiles(String dirPath, int days)    {                // 计算备份日期，备份该日期之前的文件        Date pointDate = new Date();        long timeInterval = pointDate.getTime() - convertDaysToMilliseconds(days);        pointDate.setTime(timeInterval);                // 设置文件过滤条件        IOFileFilter timeFileFilter = FileFilterUtils.ageFileFilter(pointDate, true);        IOFileFilter fileFiles = FileFilterUtils.andFileFilter(FileFileFilter.FILE, timeFileFilter);                // 删除符合条件的文件        File deleteRootFolder = new File(dirPath);        Iterator itFile = FileUtils.iterateFiles(deleteRootFolder, fileFiles, TrueFileFilter.INSTANCE);        while (itFile.hasNext())        {            File file = (File)itFile.next();            file.delete();                    }            }        /**     * 天与毫秒的转换     *      * @param days     * @return     */    private static long convertDaysToMilliseconds(int days)    {        return days * 24L * 3600 * 1000;    }        public static void main(String[] args)    {        FileTools.deleteFiles("D:\\delete_file", 1);    }}
0 0