本文介绍了SFTP上传下载使用Apache Commons VFS实现和移动的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要一个纯Apache Commons VFS解决方案/代码/示例
I need a pure Apache Commons VFS solution/code/example for
- 将本地文件上传到远程主机位置
- 检查远程主机位置中是否存在文件
- 将远程主机文件下载到本地文件位置
- 移动文件从一个远程位置到另一个远程位置
- 从远程主机位置删除文件
- Uploading a local file to Remote Host Location
- Check if a File exists in Remote Host Location
- Downloading a Remote Host File to Local file location
- Move a file from one Remote Location to another in the same Host
- Delete a file from the Remote Host Location
通过SFTP调用。
解决方案应该只使用Apache Commons VFS api，不应该引用底层的JSCH库。
The solution should only use Apache Commons VFS api and shouldn't refer to the underlying JSCH library.
推荐答案
以下SFTP实用程序提供了上传，存在，下载，移动和删除操作的示例。我在我的几个项目中使用了这个。以下代码仅使用Apache Commons VFS库的api调用。
The below SFTP Utility gives an example of Upload, Exist, Download, Move and Delete operations. I have used this in several of my projects. The below code uses api calls from Apache Commons VFS library only.
请确保将以下JAR放在项目的构建路径中：
Please make sure that you put the following JAR's in your project's build path:
- commons-logging-1.1.3.jar
- commons-vfs2-2.0.jar
- hamcrest-core-1.3.jar
- jsch-0.1.50.jar
- commons-logging-1.1.3.jar
- commons-vfs2-2.0.jar
- hamcrest-core-1.3.jar
- jsch-0.1.50.jar
任何其他兼容版本也会这样做。
Any other compatible versions would do as well.
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 Ashok
*
*/
public class SFTPUtility {
public static void main(String[] args) {
String hostName = "PutYourHostNameHere";
String username = "PutYourUserNameForHostHere";
String password = "PutYourPasswordForHostHere";
String localFilePath = "C:\\FakePath\\FakeFile.txt";
String remoteFilePath = "/FakeRemotePath/FakeRemoteFile.txt";
String remoteTempFilePath = "/FakeRemoteTempPath/FakeRemoteTempFile.txt";
upload(hostName, username, password, localFilePath, remoteFilePath);
exist(hostName, username, password, remoteFilePath);
download(hostName, username, password, localFilePath,remoteFilePath);
move(hostName, username, password, remoteFilePath, remoteTempFilePath);
delete(hostName, username, password, 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
* @param remoteFilePath
* remoteFilePath. Should contain the entire remote 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 - Ashok.
*/
// 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();
}
}
public static boolean move(String hostName, String username, String password, String remoteSrcFilePath, String remoteDestFilePath){
StandardFileSystemManager manager = new StandardFileSystemManager();
try {
manager.init();
// Create remote object
FileObject remoteFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteSrcFilePath), createDefaultOptions());
FileObject remoteDestFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteDestFilePath), createDefaultOptions());
if (remoteFile.exists()) {
remoteFile.moveTo(remoteDestFile);;
System.out.println("Move remote file success");
return true;
}
else{
System.out.println("Source file doesn't exist");
return false;
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
manager.close();
}
}
/**
* Method to download the file from remote server location
*
* @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
* @param remoteFilePath
* remoteFilePath. Should contain the entire remote file path -
* Directory and Filename with / as separator
*/
public static void download(String hostName, String username, String password, String localFilePath, String remoteFilePath) {
StandardFileSystemManager manager = new StandardFileSystemManager();
try {
manager.init();
// Append _downlaod_from_sftp to the given file name.
//String downloadFilePath = localFilePath.substring(0, localFilePath.lastIndexOf(".")) + "_downlaod_from_sftp" + localFilePath.substring(localFilePath.lastIndexOf("."), localFilePath.length());
// Create local file object. Change location if necessary for new downloadFilePath
FileObject localFile = manager.resolveFile(localFilePath);
// Create remote file object
FileObject remoteFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteFilePath), createDefaultOptions());
// Copy local file to sftp server
localFile.copyFrom(remoteFile, Selectors.SELECT_SELF);
System.out.println("File download success");
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
manager.close();
}
}
/**
* Method to delete the specified file from the remote system
*
* @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
* @param remoteFilePath
* remoteFilePath. Should contain the entire remote file path -
* Directory and Filename with / as separator
*/
public static void delete(String hostName, String username, String password, String remoteFilePath) {
StandardFileSystemManager manager = new StandardFileSystemManager();
try {
manager.init();
// Create remote object
FileObject remoteFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteFilePath), createDefaultOptions());
if (remoteFile.exists()) {
remoteFile.delete();
System.out.println("Delete remote file success");
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
manager.close();
}
}
// Check remote file is exist function:
/**
* Method to check if the remote file exists in the specified remote
* location
*
* @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 Returns if the file exists in the specified remote location
*/
public static boolean exist(String hostName, String username, String password, String remoteFilePath) {
StandardFileSystemManager manager = new StandardFileSystemManager();
try {
manager.init();
// Create remote object
FileObject remoteFile = manager.resolveFile(createConnectionString(hostName, username, password, remoteFilePath), createDefaultOptions());
System.out.println("File exist: " + remoteFile.exists());
return remoteFile.exists();
} 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;
}
}
这篇关于SFTP上传下载使用Apache Commons VFS实现和移动的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！