我对 SFTP(带有WinSSHD的 Windows )有疑问。我尝试使用Apache Commons VFS在文件夹中写入文件。在本地 SFTP 上,上传没有问题,但在第二个 SFTP 上,我总是收到以下错误。
FTP 看起来像这样:
我需要上传到文件夹“alis”。奇怪的是它没有用户/组和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()”我得到信息“文件”而不是预期的“文件夹”。
有谁知道为什么 VFS 确实将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:(要运行您需要“jsch-0.1.50.jar”的示例)
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;
}
}