Question

我遇到SFTP问题（带WinSSHD的Windows）。我尝试在Apache Commons VFS的文件夹中写入文件。在本地SFTP上我没有上传的问题，但在第二个SFTP上我总是得到以下错误。

FTP看起来像这样： enter image description here

我需要上传到文件夹“alis”。奇怪的是它没有User / Group和770权限。但是，使用FileZilla，文件上传工作正常（使用相同的登录名）。

在文件夹“alis”上执行“manager.resolveFile（）”（我尝试上传到此文件夹）并打印“.getType（）”我得到的信息“文件”而不是预期的“文件夹”

是否有人知道为什么VFS会将该文件夹识别为文件或为什么上传不起作用？

将文件上传到SFTP时的异常：

Exception in thread "main" java.lang.RuntimeException: org.apache.commons.vfs2.FileSystemException: Could not copy "file:///D:/Test/test.txt" to "sftp://user:***@host/.../alis/test.txt".
    at test.Test.upload(Test.java:77)
    at test.Test.main(Test.java:22)
Caused by: org.apache.commons.vfs2.FileSystemException: Could not copy "file:///D:/Test/test.txt" to "sftp://user:***@host/.../alis/test.txt".
    at org.apache.commons.vfs2.provider.AbstractFileObject.copyFrom(AbstractFileObject.java:1062)
    at test.Test.upload(Test.java:73)
    ... 1 more
Caused by: org.apache.commons.vfs2.FileSystemException: Could not create folder "sftp://user:***@host/.../alis" because it already exists and is a file.
    at org.apache.commons.vfs2.provider.AbstractFileObject.createFolder(AbstractFileObject.java:968)
    at org.apache.commons.vfs2.provider.AbstractFileObject.getOutputStream(AbstractFileObject.java:1424)
    at org.apache.commons.vfs2.provider.DefaultFileContent.getOutputStream(DefaultFileContent.java:461)
    at org.apache.commons.vfs2.provider.DefaultFileContent.getOutputStream(DefaultFileContent.java:441)
    at org.apache.commons.vfs2.FileUtil.copyContent(FileUtil.java:111)
    at org.apache.commons.vfs2.provider.AbstractFileObject.copyFrom(AbstractFileObject.java:1053)
    ... 2 more

源代码:(运行您需要的示例“jsch-0.1.50.jar”）

import java.io.File;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.Selectors;
import org.apache.commons.vfs2.impl.StandardFileSystemManager;
import org.apache.commons.vfs2.provider.sftp.SftpFileSystemConfigBuilder;

/**
 *
 * @author thbe
 */
public class Test {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        upload("host", "user", "password", "D:/Test/test.txt", "/../alis/test.txt");
    }

    public static FileSystemOptions createDefaultOptions()
            throws FileSystemException {
        // Create SFTP options
        FileSystemOptions opts = new FileSystemOptions();

        // SSH Key checking
        SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(
                opts, "no");

        // Root directory set to user home
        SftpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(opts, true);

        // Timeout is count by Milliseconds
        SftpFileSystemConfigBuilder.getInstance().setTimeout(opts, 10000);
        SftpFileSystemConfigBuilder.getInstance().setPreferredAuthentications(opts, "publickey,keyboard-interactive,password");

        return opts;
    }

    public static void upload(String hostName, String username,
            String password, String localFilePath, String remoteFilePath) {

        File f = new File(localFilePath);
        if (!f.exists()) {
            throw new RuntimeException("Error. Local file not found");
        }

        StandardFileSystemManager manager = new StandardFileSystemManager();

        try {
            manager.init();

            // Create local file object
            FileObject localFile = manager.resolveFile(f.getAbsolutePath());

            System.out.println("open remote File");
            FileObject remoteFile = manager.resolveFile(
                    createConnectionString(hostName, username, password,
                    remoteFilePath), createDefaultOptions());

            System.out.println("exists:"+remoteFile.exists());
            System.out.println("type:"+remoteFile.getType());
            System.out.println("URL:"+remoteFile.getURL());

            System.out.println("copy to remote File");
            remoteFile.copyFrom(localFile, Selectors.SELECT_SELF);

            System.out.println("File upload success");
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            manager.close();
        }
    }

    public static String createConnectionString(String hostName,
            String username, String password, String remoteFilePath) {
        // result: "sftp://user:123456@domainname.com/resume.pdf
        return "sftp://" + username + ":" + password + "@" + hostName + "/"
                + remoteFilePath;
    }
}

Answer 1

我们使用另一种方式将文件连接并上传到某些SFTP：

public static void main(String[] args) {
    putFile("user", "host", "passwd", "/../test.txt", "C:/test.txt");
}
public static void putFile(String username, String host, String password, String remotefile,     String localfile){
    JSch jsch = new JSch();
    Session session = null;
    try {
          session = jsch.getSession(username, host, 22);
          session.setConfig("StrictHostKeyChecking", "no");
          session.setPassword(password);
          session.connect();

          Channel channel = session.openChannel("sftp");
          channel.connect();
          ChannelSftp sftpChannel = (ChannelSftp) channel;
          sftpChannel.put(localfile, remotefile);
          sftpChannel.exit();
          session.disconnect();
     } catch (JSchException e) {
          e.printStackTrace();  
     } catch (SftpException e) {
          e.printStackTrace();
     }
}

此方法适用于任何SSH（SFTP），不要求任何登录信息或其他阻止内容。

Answer 2

你提到了：

770 rights but no user and no group.

“其他”人无权使用该目录。该目录没有用户或组，因此您的SFTP客户端可能由于权限不足而失败。

如果您为其分配用户/组会怎样？

Answer 3

我遇到了同样的问题。您正尝试在相同位置创建文件夹，并且文件存在于同名的同一位置。

文件上传到SFTP失败（Apache VFS）

3 个答案: