Java文件操作

最新推荐文章于 2024-05-18 16:27:21 发布

cxycxy1112

最新推荐文章于 2024-05-18 16:27:21 发布

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分类专栏： Java Web

本文链接：https://blog.youkuaiyun.com/cxycxy1112/article/details/96689867

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读取某一文件夹下的所有文件

public static boolean readfile(String filepath) throws FileNotFoundException, IOException {

try {

File file = new File(filepath);

if (!file.isDirectory()) {

System.out.println("文件");

System.out.println("path=" + file.getPath());

System.out.println("absolutepath=" + file.getAbsolutePath());

System.out.println("name=" + file.getName());

} else if (file.isDirectory()) {

System.out.println("文件夹");

String[] filelist = file.list();

for (int i = 0; i < filelist.length; i++) {

File readfile = new File(filepath + "\\" + filelist[i]);

if (!readfile.isDirectory()) {

System.out.println("path=" + readfile.getPath());

System.out.println("absolutepath="

+ readfile.getAbsolutePath());

System.out.println("name=" + readfile.getName());

} else if (readfile.isDirectory()) {

readfile(filepath + "\\" + filelist[i]);

}

}

}

} catch (FileNotFoundException e) {

System.out.println("readfile() Exception:" + e.getMessage());

}

return true;

}

删除某一文件夹下所有文件操作

public static boolean deletefile(String delpath)
                        throws FileNotFoundException, IOException {
                try {

                        File file = new File(delpath);
                        if (!file.isDirectory()) {
                                System.out.println("1");
                                file.delete();
                        } else if (file.isDirectory()) {
                                System.out.println("2");
                                String[] filelist = file.list();
                                for (int i = 0; i < filelist.length; i++) {
                                        File delfile = new File(delpath + "\\" + filelist[i]);
                                        if (!delfile.isDirectory()) {
                                                System.out.println("path=" + delfile.getPath());
                                                System.out.println("absolutepath="
                                                                + delfile.getAbsolutePath());
                                                System.out.println("name=" + delfile.getName());
                                                delfile.delete();
                                                System.out.println("删除文件成功");
                                        } else if (delfile.isDirectory()) {
                                                deletefile(delpath + "\\" + filelist[i]);
                                        }
                                }
                                file.delete();

                        }

                } catch (FileNotFoundException e) {
                        System.out.println("deletefile()   Exception:" + e.getMessage());
                }
                return true;
        }

重命名

public static void renameFile(String filePath, String fileName) {
        SimpleDateFormat fmdate = new SimpleDateFormat("yyyyMMddHHmmssSSS");
        String oldFileName = filePath+"/"+fileName;
        File oldFile = new File(oldFileName);
        String newFileName = filePath+"/"+fileName.split("\\.")[0]+fmdate.format(new Date())+"."+fileName.split("\\.")[1];
        File newFile = new File(newFileName);
        if (oldFile.exists() && oldFile.isFile()) {
            oldFile.renameTo(newFile);
        }
    }