批量给当前文件夹下文件或文件名加创建日期前缀

绝地灬酷狼 2023-10-05 09:27 51阅读 0赞

import java.io.File;
    import java.nio.file.Files;
    import java.nio.file.LinkOption;
    import java.nio.file.Path;
    import java.nio.file.Paths;
    import java.nio.file.attribute.BasicFileAttributeView;
    import java.nio.file.attribute.BasicFileAttributes;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    
    
    /**
     * 文件工具类
     */
    public class FileTools {
    
        public static void main(String[] args) {
            // TODO Auto-generated method stub
            String filePath = ".";
            reNameFile(filePath);
        }
    
        /**
         * @return 获取当天是周记
         */
        private static String getWeekDay(Date date) {
            Calendar now = Calendar.getInstance();
            now.setTime(date);
            boolean isFirstSunday = (now.getFirstDayOfWeek() == Calendar.SUNDAY);
            int weekDay = now.get(Calendar.DAY_OF_WEEK);
            if (isFirstSunday) {
                weekDay = (weekDay - 1 == 0 ? 7 : weekDay);
            }
            String[] weekDays = {"周日", "周一", "周二", "周三", "周四", "周五", "周六"};
            return weekDays[weekDay - 1];
        }
    
        /**
         * 重命名文件夹下所有文件 只遍历第一层文件,不涉及文件夹    重命名效果:  dsadas.bat   =>   20200902 周三 dsadas.bat
         *
         * @param dirPath 文件夹路径
         */
        private static void reNameFile(String dirPath) {
            File fileDir = new File(dirPath);
            File[] files = fileDir.listFiles();
            assert files != null;
            for (File file : files) {
                String namePrefix = getFilePrefix(file);
                String fileName = file.getName();
                /*排除jar文件*/
                if (!fileName.startsWith(namePrefix) /*&& !file.isDirectory()*/ && !fileName
                    .endsWith(".jar")) {
                    String newPath = file.getPath().replace(fileName, namePrefix + fileName);
                    file.renameTo(new File(newPath));
                }
            }
        }
    
        /**
         * @param file 文件
         * @return 前缀格式
         */
        private static String getFilePrefix(File file) {
            //文件最后修改时间
            Date modifiedTime = new Date(file.lastModified());
            return new SimpleDateFormat("MMdd").format(modifiedTime) + "_";
        }
    
        /**
         * @param filePath 文件全路径
         * @return 获取文件创建日期
         */
        private static Date getCreateTime(String filePath) {
            Path path = Paths.get(filePath);
            BasicFileAttributeView basicview = Files
                .getFileAttributeView(path, BasicFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
            BasicFileAttributes attr;
            try {
                attr = basicview.readAttributes();
                return new Date(attr.creationTime().toMillis());
            } catch (Exception e) {
                e.printStackTrace();
            }
            Calendar cal = Calendar.getInstance();
            cal.set(1970, 0, 1, 0, 0, 0);
            return cal.getTime();
        }
    }

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[https://blog.csdn.net/xiaoerbuyu1233/article/details/102608339][https_blog.csdn.net_xiaoerbuyu1233_article_details_102608339]

[https_blog.csdn.net_xiaoerbuyu1233_article_details_102608339]: https://blog.csdn.net/xiaoerbuyu1233/article/details/102608339