java - 使用Java通过FTP将所有目录复制到服务器

Question

我需要将目录从本地磁盘复制到服务器。该目录包含许多目录、子目录和文件。（想想目录的层次结构树）。

以下是复制一个文件的示例：

 public void saveFilesToServer() throws IOException {
    FTPClient ftp = new FTPClient();
    ftp.connect(ftp.foobar.com);
    if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) {
        ftp.disconnect();
        log.fatal("FTP not disconnected");
    }

    ftp.login("foo", "qwerty");
    log.info("Connected to server .");
    log.info(ftp.getReplyString());
    ftp.changeWorkingDirectory("test");
    ftp.makeDirectory("somedir");
    ftp.changeWorkingDirectory("somedir");
    ftp.setFileType(FTPClient.BINARY_FILE_TYPE);    
    java.io.File srcFolder = new java.io.File(folderPath);      
    FileInputStream fis = new FileInputStream(srcFolder);
    ftp.storeFile (fileName, fis);
    ftp.disconnect();
    log.info("FTP disconnected");
}

现在，我需要复制一个目录 ( somedir)，其中包含somedir.

我认为算法应该使用递归。有人知道怎么做吗？

Answer 1

以下是该问题的递归解决方案的示例：

public void saveFilesToServer(String remoteDest, File localSrc) throws IOException {
    FTPClient ftp = new FTPClient();
    ftp.connect("ftp.foobar.com");
    if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) {
        ftp.disconnect();
        log.fatal("FTP not disconnected");
    }

    ftp.login("foo", "qwerty");
    log.info("Connected to server .");
    log.info(ftp.getReplyString());

    ftp.changeWorkingDirectory(remoteDest);
    ftp.setFileType(FTPClient.BINARY_FILE_TYPE);

    try {
        upload(localSrc, ftp);
    }
    finally {
        ftp.disconnect();
        log.info("FTP disconnected");           
    }
}

public void upload(File src, FTPClient ftp) throws IOException {
    if (src.isDirectory()) {
        ftp.makeDirectory(src.getName());
        ftp.changeWorkingDirectory(src.getName());
        for (File file : src.listFiles()) {
            upload(file, ftp);
        }
        ftp.changeToParentDirectory();
    }
    else {
        InputStream srcStream = null;
        try {
            srcStream = src.toURI().toURL().openStream();
            ftp.storeFile(src.getName(), srcStream);
        }
        finally {
            IOUtils.closeQuietly(srcStream);
        }
    }
}

IOUtils是Apache Commons IO的一部分。

Answer 2

upload(fileName){
  If (filename is not dir){
   ftpFile();
   return;
 }
 listoffiles = get the list of all files in dir 
    for each file : listoffiles {
    upload(file)
 }

}