Apache Commons FTPClient.listFiles [英] Apache Commons FTPClient.listFiles

问题描述

我正在使用 org.apache.commons.net.ftp.FTPClient 在我的一个应用程序中使用 FTP 服务器.我能够connect、login、pwd 和cwd.但是，当我尝试 list 文件时，它不会返回该目录中的文件列表，我确定其中有文件.我正在使用方法 FTPFile[] listFiles()，返回一个空数组FTPFile.

I am using org.apache.commons.net.ftp.FTPClient in one of my applications to work with a FTP server. I am able to connect, login, pwd and cwd. However, when I try to list the files it doesn't return the list of files in that directory, where I know for sure that there are files. I am using the method FTPFile[] listFiles(), it returns an empty array of FTPFile.

请在我尝试此操作的代码片段下方找到:

Please find below the code snippet where I am trying this:

        String hostname = properties.getProperty("FTP_SERVER");
        String user = properties.getProperty("FTP_USER");
        String passwd = properties.getProperty("FTP_PASSWD");
        FTPClient client = new FTPClient();
        client.connect(hostname);
        client.login(user, passwd);
        String reply = client.getStatus();
        System.out.println(reply);
        client.enterRemotePassiveMode();
        client.changeWorkingDirectory("/uploads");
        FTPFile[] files = client.listFiles();
        System.out.println(files.length);
        for (FTPFile file : files) {
            System.out.println(file.getName());
        }

        String[] fileNames = client.listNames();
        if (fileNames != null) {
            for (String file : fileNames) {
                System.out.println(file);
            }
        }
        client.disconnect();

推荐答案

这似乎与我遇到(并已解决)的问题相同，请参阅此答案:

This seems like the same issue I had (and solved), see this answer:

Apache Commons Net FTPClient 和 listFiles()

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