从ftp

Question

您好我编写的程序需要使用apache commons从ftp下载一些文件，但是当我尝试下载时，程序会创建一个零字节文件并转到下一个文件。这是我的代码：

 String FTPPath = link.attr("href");

                    URL url = new URL(FTPPath);

                    String host = url.getHost();

                    FTPClient client = new FTPClient();



                        client.connect(host);
                        client.login("anonymous", "anonymous");

                        boolean success = client.changeWorkingDirectory(url.getPath());

                        FTPFile[] list = client.listFiles();

                       // boolean success = client.changeWorkingDirectory(url.getPath());
                        for (FTPFile f : list) {

                            String fileName = f.getName();

                            if(fileName.endsWith(".raw")){
                                System.out.println(fileName + " Downloading");

                                //client.download(fileName, new java.io.File(fileName));
                                String remoteFile1 = f.getLink();


                                File downloadFile1 = new File(fileName);
                                OutputStream outputStream1 = new BufferedOutputStream(new FileOutputStream(downloadFile1));
                                success = client.retrieveFile(remoteFile1, outputStream1);
                                outputStream1.close();

                                if (success) {
                                    System.out.println(fileName +" has been downloaded successfully.");
                                }

                            }


                        }


                }

成功变量显然是假的。但是我没有收到任何其他错误消息。

以下是我尝试下载的其中一个ftps的示例。

ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2015/11/PXD000918