java代码 删除ftp已上传文件

你可以使用 Apache Commons Net 库中的 FTPClient 类来删除已上传的文件。以下是一个示例代码：

import org.apache.commons.net.ftp.FTPClient;

public class FtpDeleteExample {
    public static void main(String[] args) {
        String server = "ftp.example.com";
        int port = 21;
        String username = "username";
        String password = "password";
        String remoteFilePath = "/path/to/file.txt";

        FTPClient ftpClient = new FTPClient();
        try {
            ftpClient.connect(server, port);
            ftpClient.login(username, password);
            boolean deleted = ftpClient.deleteFile(remoteFilePath);
            if (deleted) {
                System.out.println("File deleted successfully.");
            } else {
                System.out.println("Failed to delete file.");
            }
            ftpClient.logout();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (ftpClient.isConnected()) {
                try {
                    ftpClient.disconnect();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

请注意，您需要替换示例代码中的服务器、端口、用户名、密码和远程文件路径。