在JSch中使用channelsftp传输文件夹和子文件夹？

Question

我想使用channelsftp传输文件夹和子文件夹.我可以使用channelsftp.put(src,dest)命令成功传输文件,但这对文件夹不起作用(至少我无法使其工作).那么有人可以解释我如何使用channelsftp传输文件夹和子文件夹？

Answer 1

要在jsch中使用多级文件夹结构,您:

1. 进入他们;
2. 列出他们的内容;
3. 每个找到的项目都要做;
4. 如果找到子文件夹,请重复1,2和3.

在你的JSCH类中下载dirs方法:

public void downloadDir(String sourcePath, String destPath) throws SftpException { // With subfolders and all files.
    // Create local folders if absent.
    try {
        new File(destPath).mkdirs();
    } catch (Exception e) {
        System.out.println("Error at : " + destPath);
    }
    sftpChannel.lcd(destPath);

    // Copy remote folders one by one.
    lsFolderCopy(sourcePath, destPath); // Separated because loops itself inside for subfolders.
}

private void lsFolderCopy(String sourcePath, String destPath) throws SftpException { // List source (remote, sftp) directory and create a local copy of it - method for every single directory.
    Vector<ChannelSftp.LsEntry> list = sftpChannel.ls(sourcePath); // List source directory structure.
    for (ChannelSftp.LsEntry oListItem : list) { // Iterate objects in the list to get file/folder names.
        if (!oListItem.getAttrs().isDir()) { // If it is a file (not a directory).
            if (!(new File(destPath + "/" + oListItem.getFilename())).exists() || (oListItem.getAttrs().getMTime() > Long.valueOf(new File(destPath + "/" + oListItem.getFilename()).lastModified() / (long) 1000).intValue())) { // Download only if changed later.
                new File(destPath + "/" + oListItem.getFilename());
                sftpChannel.get(sourcePath + "/" + oListItem.getFilename(), destPath + "/" + oListItem.getFilename()); // Grab file from source ([source filename], [destination filename]).
            }
        } else if (!".".equals(oListItem.getFilename() || "..".equals(oListItem.getFilename())) {
            new File(destPath + "/" + oListItem.getFilename()).mkdirs(); // Empty folder copy.
            lsFolderCopy(sourcePath + "/" + oListItem.getFilename(), destPath + "/" + oListItem.getFilename()); // Enter found folder on server to read its contents and create locally.
        }
    }
}

在JSCH类中删除dirs方法:

try {
    sftpChannel.cd(dir);
    Vector<ChannelSftp.LsEntry> list = sftpChannel.ls(dir); // List source directory structure.
    for (ChannelSftp.LsEntry oListItem : list) { // Iterate objects in the list to get file/folder names.
        if (!oListItem.getAttrs().isDir()) { // If it is a file (not a directory).
            sftpChannel.rm(dir + "/" + oListItem.getFilename()); // Remove file.
        } else if (!".".equals(oListItem.getFilename())) { // If it is a subdir.
            try {
                sftpChannel.rmdir(dir + "/" + oListItem.getFilename());  // Try removing subdir.
            } catch (Exception e) { // If subdir is not empty and error occurs.
                lsFolderRemove(dir + "/" + oListItem.getFilename()); // Do lsFolderRemove on this subdir to enter it and clear its contents.
            }
        }
    }
    sftpChannel.rmdir(dir); // Finally remove the required dir.
} catch (SftpException sftpException) {
    System.out.println("Removing " + dir + " failed. It may be already deleted.");
}

从外面调用这些方法,如:

MyJSCHClass sftp = new MyJSCHClass();
sftp.removeDir("/mypublic/myfolders");
sftp.disconnect(); // Disconnecting is obligatory - otherwise changes on server can be discarded (e.g. loaded folder disappears).

Answer 2

根据我的理解，上面的代码（由 zon 提供）可供下载。我需要上传到远程服务器。我编写了下面的代码来实现相同的目的。如果有任何问题，请尝试并发表评论（它会忽略以“.”开头的文件）

private static void lsFolderCopy(String sourcePath, String destPath,
            ChannelSftp sftpChannel) throws SftpException,   FileNotFoundException {
    File localFile = new File(sourcePath);

if(localFile.isFile())
{

    //copy if it is a file
    sftpChannel.cd(destPath);

    if(!localFile.getName().startsWith("."))
    sftpChannel.put(new FileInputStream(localFile), localFile.getName(),ChannelSftp.OVERWRITE);
}   
else{
    System.out.println("inside else "+localFile.getName());
    File[] files = localFile.listFiles();

    if(files!=null && files.length > 0 && !localFile.getName().startsWith("."))
    {

        sftpChannel.cd(destPath);
        SftpATTRS  attrs = null;

    //check if the directory is already existing
    try {
        attrs = sftpChannel.stat(destPath+"/"+localFile.getName());
    } catch (Exception e) {
        System.out.println(destPath+"/"+localFile.getName()+" not found");
    }

    //else create a directory   
    if (attrs != null) {
        System.out.println("Directory exists IsDir="+attrs.isDir());
    } else {
        System.out.println("Creating dir "+localFile.getName());
        sftpChannel.mkdir(localFile.getName());
    }

    //System.out.println("length " + files.length);

     for(int i =0;i<files.length;i++) 
        {

         lsFolderCopy(files[i].getAbsolutePath(),destPath+"/"+localFile.getName(),sftpChannel);

                    }

                }
            }

         }