Question

是否可以使用wget仅下载目录中的最新文件？我知道可以使用选项-nc仅下载尚未下载的文件，但我只希望下载来自ftp://ftp-cdc.dwd.de/pub/CDC/grids_germany/hourly/radolan/recent/的最新单个文件而不是所有（新）文件。目录

Answer 1

您可以尝试使用其版本号下载最新文件：

final URL url = new URL(remotePath);
        final URLConnection connection = url.openConnection();
        final int size = connection.getContentLength();

        if (size < 0) {
            ServerWrapper.getLogger().info("Unable to get the latest version of StarMade!");
        } else {
            ServerWrapper.getLogger().info("Downloading the latest version of StarMade (length: " + size + " bytes, URL: " + remotePath + ")...");
        }

        inputStream = new BufferedInputStream(url.openStream());
        outputStream = new FileOutputStream("StarMade-latest.zip");

        final byte data[] = new byte[1024];
        int count;
        double sumCount = 0.0;
        int percentage;
        int lastPercentage = 0;

        while ((count = inputStream.read(data, 0, 1024)) != -1) {
            outputStream.write(data, 0, count);

            sumCount += count;

            percentage = (int) Math.ceil(sumCount / size * 100);

            if (percentage != lastPercentage) {
                ServerWrapper.getLogger().info(percentage + "%");
            }

            lastPercentage = percentage;
        }

        if (inputStream != null) {
            inputStream.close();
        }
        if (outputStream != null) {
            outputStream.close();
        }

        ServerWrapper.getLogger().info("Download finished. ");

        if (isInstalled() && backup) {
            ServerWrapper.getLogger().info("Backing up server.");
            final File f = new File(new SimpleDateFormat("'backup-'MM-dd hh-mm-ss-SS'.zip'").format(new Date()));
            if (!f.exists()) {
                f.createNewFile();
            }
            ZipUtils.zipDirectory(starmadeDirectory, f);
        }

        if (!starmadeDirectory.exists()) {
            starmadeDirectory.mkdirs();
        }
        ServerWrapper.getLogger().info("Installing update.");

        final File starmadeUpdate = new File("starmade-latest.zip");

        if (starmadeUpdate.length() != size) {
            throw new IOException("File downloaded is the incorrect size!");
        }

告诉wget只下载目录中的最新文件？

1 个答案: