如何在Java中使用jcifs将文件从smb共享复制到本地驱动器？

Question

有人能帮我把文件从共享文件夹复制到本地驱动器吗？我的代码是：

import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileInputStream;
import jcifs.smb.SmbFileOutputStream;;


public class smb {

      /**
      * @param args
      * @throws IOException
       */
      public static void main(String[] args) throws IOException {
            // TODO Auto-generated method stub


          String urlToBackUpFile = "smb://ip/backup$/test.txt"; 
          System.out.println("smb folder of source file" + urlToBackUpFile);
          NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(null, "login", "pass");


            SmbFile dir = new SmbFile(urlToBackUpFile, auth);
            System.out.println(dir.getDate());
            SmbFile dest = new SmbFile ("C:/SQLRESTORESTAGE/v2.bak");
            dir.copyTo(dest);
      }
}

文件未被复制。我收到一条消息“无法连接到服务器”，但程序显示dir。源文件的getDate（）（以及文件名和长度）。因此，我认为目标文件夹（C:/SQLRESTORESTAGE/）存在问题。此外，我也提供了只用于读取源文件。你能帮我纠正一下密码或者给点建议吗？非常感谢。

Answer 1

我让它工作了。在复制之前，我必须“创建”目标文件。尝试将下面的中间行添加到原始代码段中，看看是否有效。

SmbFile dest = new SmbFile ("C:/SQLRESTORESTAGE/v2.bak");
dest.createNewFile();
dir.copyTo(dest);

Answer 2

经过多次尝试和失败，我唯一可靠的方法就是老一套地使用FileInputStream和FileOutputStream，如下所示：

   `SmbFile[] files = getSMBListOfFiles(sb, logger, domain, userName, password, sourcePath, sourcePattern);

    if (files == null)
        return false;
    output(sb, logger, "      Source file count: " + files.length);
    String destFilename;
    FileOutputStream fileOutputStream;
    InputStream fileInputStream;
    byte[] buf;
    int len;
    for (SmbFile smbFile: files) {
        destFilename = destinationPath + smbFile.getName();
        output(sb, logger, "         copying " + smbFile.getName());
        try {
            fileOutputStream = new FileOutputStream(destFilename);
            fileInputStream = smbFile.getInputStream();
            buf = new byte[16 * 1024 * 1024];
            while ((len = fileInputStream.read(buf)) > 0) {
                fileOutputStream.write(buf, 0, len);
            }
            fileInputStream.close();
            fileOutputStream.close();
        } catch (SmbException e) {
            OutputHandler.output(sb, logger, "Exception during copyNetworkFilesToLocal stream to output, SMP issue: " + e.getMessage(), e);
            e.printStackTrace();
            return false;
        } catch (FileNotFoundException e) {
            OutputHandler.output(sb, logger, "Exception during copyNetworkFilesToLocal stream to output, file not found: " + e.getMessage(), e);
            e.printStackTrace();
            return false;
        } catch (IOException e) {
            OutputHandler.output(sb, logger, "Exception during copyNetworkFilesToLocal stream to output, IO problem: " + e.getMessage(), e);
            e.printStackTrace();
            return false;
        }
    }`

Answer 3

也许添加auth到第二个文件：

SmbFile dest = new SmbFile ("C:/SQLRESTORESTAGE/v2.bak",**auth**);

使用SmbFile dest=new SmbFile（“C:/SQLRESTORESTAGE”，auth）。canWrite您知道自己是否拥有对父目录的写入权限