问是否有方法通过Java中的VFS设置远程文件夹的权限？
EN

Stack Overflow用户

提问于 2014-07-18 05:32:17

回答 1查看 2.8K关注 0票数 0

我创建一个XML和一个ZIP文件，并通过SFTP将它们上传到服务器。文件夹结构如下所示：

/
|
|--/incoming
       |
       |--/<hash>
             |
             |-- file.xml
             |-- file.zip

<hash>文件夹是在我上传XML和ZIP时创建的，我需要这个文件夹具有777的权限。

据我所知，我无法通过Java中的VFS更改已经创建的文件夹的权限。当时我尝试的是在本地创建该文件夹，给它777，并将其与XML和ZIP一起上传。

我的代码如下所示：

File fUploadDir = new File(uploadDir);
fUploadDir.mkdir();

fUploadDir.setReadable(true, false);
fUploadDir.setWritable(true, false);
fUploadDir.setExecutable(true, false);

// Create and add ZIP and XML files...
// ...

StandardFileSystemManager manager = new StandardFileSystemManager();

// Initializes the file manager
manager.init();

File file = new File(pathToFolder);

// Setup our SFTP configuration
FileSystemOptions opts = new FileSystemOptions();
SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(opts, "no");
SftpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(opts, true);
SftpFileSystemConfigBuilder.getInstance().setTimeout(opts, 10000);

String sftpUri = "sftp://" + userId + ":" + password + "@" + serverAddress + "/" + remoteDirectory;

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

// Create remote file object         
FileObject remoteFile = manager.resolveFile(sftpUri, opts);

// Copy local file to sftp server
remoteFile.copyFrom(localFile, Selectors.SELECT_SELF_AND_CHILDREN);

当我执行此代码时，XML和ZIP将被上载，而不是目录，因此SFTP服务器上的结构如下所示：

/
|
|--/incoming
       |
       |-- file.xml
       |-- file.zip

如何获得具有权限的文件夹( 777 )？

apache-commons-vfs

java

sftp

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回答 1

Stack Overflow用户

回答已采纳

发布于 2014-07-21 04:31:40

我已经改变了权限。我的代码如下所示：

StandardFileSystemManager manager = new StandardFileSystemManager();

String serverAddress = Config.getProperty("SFTP.SERVER.URL");
String userId = Config.getProperty("SFTP.SERVER.USERID");
String password = Config.getProperty("SFTP.SERVER.PASSWORD");
String remoteDirectory = Config.getProperty("SFTP.SERVER.REMOTEPATH");

JSch jsch = new JSch();

Session session = jsch.getSession(userId, serverAddress, 22);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");                

session.connect();

Channel channel = session.openChannel("sftp");
channel.connect();
ChannelSftp cSftp = (ChannelSftp) channel;

// check if the file exists
String filepath = localDirectory + File.separator + fileToFTP;
File file = new File(filepath);
if (!file.exists()) {
  logger.error(filepath + " existiert nicht.");
  throw new RuntimeException("Error. Local file not found");
}

// Initializes the file manager
manager.init();

// Setup our SFTP configuration
FileSystemOptions opts = new FileSystemOptions();
SftpFileSystemConfigBuilder.getInstance().setStrictHostKeyChecking(opts, "no");
SftpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(opts, true);
SftpFileSystemConfigBuilder.getInstance().setTimeout(opts, 10000);

// Create the SFTP URI using the host name, userid, password, remote path and file name
String sftpUri = "sftp://" + userId + ":" + password +  "@" + serverAddress + "/" + remoteDirectory + "/" + hash + "/" + fileToFTP;

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

// Create remote file object         
FileObject remoteFile = manager.resolveFile(sftpUri, opts);

// Copy local file to sftp server
remoteFile.copyFrom(localFile, Selectors.SELECT_SELF);

// Set file permissions to 777.
// 511 is the decimal representation for octal 777.
cSftp.chmod(511, remoteDirectory + "/" + hash);