zip文件夹及其子文件夹中的文件列表 [英] List of files inside a zip folder and its subfolder

问题描述

我正在寻找一种方法来获取zip文件中的文件列表。我创建了一个方法来获取目录中的文件列表，但我也在寻找一种方法来获取zip文件，而不是只显示zip文件。

I am looking a way to get the list of files inside a zip file. I created a method to get the list of files inside a directory but I am also looking a way to get files inside a zip as well instead of showing just zip file.

这是我的方法：

public ArrayList<String> listFiles(File f, String min, String max) {
    try {
        // parse input strings into date format
        Date minDate = sdf.parse(min);
        Date maxDate = sdf.parse(max);
        //
        File[] list = f.listFiles();
        for (File file : list) {
            double bytes = file.length();
            double kilobytes = (bytes / 1024);
            if (file.isFile()) {
                String fileDateString = sdf.format(file.lastModified());
                Date fileDate = sdf.parse(fileDateString);
                if (fileDate.after(minDate) && fileDate.before(maxDate)) {
                    lss.add("'" + file.getAbsolutePath() + 
                        "'" + " Size KB:" + kilobytes + " Last Modified: " +
                        sdf.format(file.lastModified()));
                }
            } else if (file.isDirectory()) {
                listFiles(file.getAbsoluteFile(), min, max);
            }
        }
    } catch (Exception e) {
        e.getMessage();
    }
    return lss;
}

推荐答案

寻找更好的回答一下，我终于找到了一个更好的方法来做到这一点。实际上，您可以使用Java NIO API（自Java 7开始）以更通用的方式执行相同的操作。

After having searched for a better answer for a while, I finally found a better way to do this. You can actually do the same thing in a more generic way using the Java NIO API (Since Java 7).

// this is the URI of the Zip file itself
URI zipUri = ...; 
FileSystem zipFs = FileSystems.newFileSystem(zipUri, Collections.emptyMap());

// The path within the zip file you want to start from
Path root = zipFs.getPath("/"); 

Files.walkFileTree(root, new SimpleFileVisitor<Path>() {
    @Override
    public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) throws IOException {
        // You can do anything you want with the path here
        System.out.println(path);
        // the BasicFileAttributes object has lots of useful meta data
        // like file size, last modified date, etc...
        return FileVisitResult.CONTINUE;
    }

    // The FileVisitor interface has more methods that 
    // are useful for handling directories.
});

这种方法的优点是可以通过这种方式遍历任何文件系统：普通的Windows或Unix文件系统，文件系统包含在zip或jar中，或任何其他包含在内。

This approach has the advantage that you can travers ANY file system this way: your normal windows or Unix filesystem, the file system contain contained within a zip or a jar, or any other really.

然后，您可以轻松读取任何 Path <的内容/ code>通过 Files 类，使用 Files.copy（），<$ c $等方法c> File.readAllLines（）， File.readAllBytes（）等...

You can then trivially read the contents of any Path via the Files class, using methods like Files.copy(), File.readAllLines(), File.readAllBytes(), etc...

这篇关于zip文件夹及其子文件夹中的文件列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！