[英]org.apache.commons.vfs2.FileSystemException: Could not connect to SFTP server
[英]When SFTP Upload using Apache Commons VFS have to face org.apache.commons.vfs2.FileSystemException: Could not find file with URI
我尝试将文件从一台远程服务器上传到另一台远程服务器。 我使用以下代码,但我必须面对“org.apache.commons.vfs2.FileSystemException”。
**例外: **
org.apache.commons.vfs2.FileSystemException:找不到具有 URI "sftp://root:***@111.222.333.444\root\home\tempfileholder\sample.txt" 的文件,因为它是相对路径,并且没有提供了基本 URI。
另外,我不明白希望它们作为基础 URL
解决方案,请。
**代码: **
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;
/**
* The class SFTPUtil containing uploading, downloading, checking if file exists
* and deleting functionality using Apache Commons VFS (Virtual File System)
* Library
*
* @author Kavindu
*
*/
public class SFTPUtility {
public static void main(String[] args) {
String hostName = "111.222.333.444";
String username = "root";
String password = "kkTTpp@JacobWPST";
String localFilePath = ""C:"+File.separator+"Users"+File.separator+"kavindu"+File.separator+"Desktop"+File.separator+"temp"+File.separator+"tempdetails.txt";
String remoteFilePath = "/root/home/tempfileholder/sample.txt";
upload(hostName, username, password, localFilePath, remoteFilePath);
}
/**
* Method to upload a file in Remote server
*
* @param hostName
* HostName of the server
* @param username
* UserName to login
* @param password
* Password to login
* @param localFilePath
* LocalFilePath. Should contain the entire local file path -
* Directory and Filename with \\ as separator
*/
public static void upload(String hostName, String username, String password, String localFilePath, String remoteFilePath) {
File file = new File(localFilePath);
if (!file.exists())
throw new RuntimeException("Error. Local file not found");
StandardFileSystemManager manager = new StandardFileSystemManager();
try {
manager.init();
// Create local file object
FileObject localFile = manager.resolveFile(file.getAbsolutePath());
// Create remote file object
FileObject remoteFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteFilePath), createDefaultOptions());
/*
* use createDefaultOptions() in place of fsOptions for all default
* options - Kavindu.
*/
// Copy local file to sftp server
remoteFile.copyFrom(localFile, Selectors.SELECT_SELF);
System.out.println("File upload success");
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
manager.close();
}
}
/**
* Generates SFTP URL connection String
*
* @param hostName
* HostName of the server
* @param username
* UserName to login
* @param password
* Password to login
* @param remoteFilePath
* remoteFilePath. Should contain the entire remote file path -
* Directory and Filename with / as separator
* @return concatenated SFTP URL string
*/
public static String createConnectionString(String hostName, String username, String password, String remoteFilePath) {
return "sftp://" + username + ":" + password + "@" + hostName + "/" + remoteFilePath;
}
/**
* Method to setup default SFTP config
*
* @return the FileSystemOptions object containing the specified
* configuration options
* @throws FileSystemException
*/
public static FileSystemOptions createDefaultOptions() throws FileSystemException {
// Create SFTP options
FileSystemOptions opts = new FileSystemOptions();
// SSH Key checking
SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(opts, "no");
/*
* Using the following line will cause VFS to choose File System's Root
* as VFS's root. If I wanted to use User's home as VFS's root then set
* 2nd method parameter to "true"
*/
// Root directory set to user home
SftpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(opts, false);
// Timeout is count by Milliseconds
SftpFileSystemConfigBuilder.getInstance().setTimeout(opts, 10000);
return opts;
}
}
正如 文档所说
By default, the path is relative to the user's home directory. This can be changed with:
FtpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(options, false);
所以在你的情况下,它是sftp://root:***@111.222.333.444\\home\\tempfileholder\\sample.txt
,它映射到你的 linux 主机中的/root/home/tempfileholder/sample.txt
。
我还投入了大量时间使用 Apache vfs2 lib 连接到 SFTP 服务器并下载文件。 最后我切换到sshj ,它对我来说看起来更容易使用:
Maven 依赖:
<dependency>
<groupId>com.hierynomus</groupId>
<artifactId>sshj</artifactId>
<version>0.31.0</version>
</dependency>
示例下载远程文件:
@Test
public void testConnection() {
try {
final SSHClient ssh = new SSHClient();
ssh.addHostKeyVerifier(new PromiscuousVerifier());
try {
ssh.loadKnownHosts();
ssh.connect(ftpServer, ftpPort);
ssh.authPassword(ftpUser, ftpPassword);
SFTPClient sftpClient = ssh.newSFTPClient();
String localDir="/tmp/";
sftpClient.get(ftpFullPath, localDir + "sshjFile.txt");
sftpClient.close();
} finally {
ssh.disconnect();
}
} catch (IOException e) {
Assert.fail(e.getMessage());
e.printStackTrace();
}
}
要上传文件,只需使用put
方法而不是get
。
<!--Supported protocols include: Echo, Finger, FTP, NNTP, NTP, POP3(S), SMTP(S), Telnet, Whois-->
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
</dependency>
在你的 pom 中添加这个
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.