在 sshj v0.5.0 中上传和下载文件时设置文件过滤器

Question

我一直在使用 sshj 库，

<dependency>
    <groupId>net.schmizz</groupId>
    <artifactId>sshj</artifactId>
    <version>0.3.1</version>
</dependency>

以下是我使用 0.3.1 的代码，它可以很好地上传支持通配符模式的文件。

SSHClient client = null;
SCPUploadClient uploader = null;
try {
    client = getClient();
    uploader = client.newSCPFileTransfer().newSCPUploadClient();
    uploader.setFileFilter(new WildcardFileFilter(wildCardPattern));

    //determine the remote directory
    File f = new File(localDirLocation);
    String dir = remoteDirLocation + f.getName();
    uploader.copy(localDirLocation, remoteDirLocation);
} catch (IOException e) {
      //processing exceptions here
} finally {
    disconnectClient(client);
}

但现在，当我尝试转向 0.5.0 时，代码出现了很多编译错误。

我想了解当我想要从本地计算机上传和下载文件到远程计算机时如何设置文件过滤器，反之亦然

有人可以帮助我吗？

Answer 1

目前使用 0.5.0，这不再可能。我为 SSHJ 的 Shikhar（维护者）创建了一个拉取请求。

下面我修改了您的代码示例以使其与 0.5.0 一起工作。基本的变化是您现在需要向复制方法提供 LocalSourceFile。为了使 SCPUploadClient 能够仅发送目录的过滤内容，我重写了 getChildren(LocalFileFilter) 方法。

SSHClient client = null;
SCPUploadClient uploader = null;
try {
    client = getClient();
    uploader = client.newSCPFileTransfer().newSCPUploadClient();
    File f = new File(localDirLocation);
    FilteredFileSystemDirectory filteredDir = new FilteredFileSystemDirectory(f, new WildcardFileFilter());
    String dir = remoteDirLocation + f.getName();
    uploader.copy(filteredDir, remoteDirLocation);
} catch (IOException e) {
    //processing exceptions here
} finally {
    disconnectClient(client);
}

public class FilteredFileSystemDirectory extends FileSystemFile {
    private final LocalFileFilter filter;

    public FilteredFileSystemDirectory(File f, LocalFileFilter filter) {
        super(f);
        this.filter = filter;
    }

    @Override
    public Iterable<? extends LocalSourceFile> getChildren(LocalFileFilter filter)
        throws IOException {
        return super.getChildren(filter);
    }

}

对于 WildcardFileFilter 请参阅我关于如何在 0.6.0 中执行此操作的第二个答案。

希望这有帮助。

Answer 2

使用 0.6.0，您可以编写代码如下：

SSHClient client = null;
SCPUploadClient uploader = null;
try {
    client = getClient();
    uploader = client.newSCPFileTransfer().newSCPUploadClient();
    uploader.setUploadFilter(new WildcardFileFilter(wildCardPattern));

    //determine the remote directory
    File f = new File(localDirLocation);
    String dir = remoteDirLocation + f.getName();
    uploader.copy(new FileSystemFile(localDirLocation), remoteDirLocation);
} catch (IOException e) {
    //processing exceptions here
} finally {
    disconnectClient(client);
}

我猜您使用的 WildcardFileFilter 来自 commons-io。由于这是一个 FilenameFilter 而不是 LocalFileFilter，因此您可以非常简单地将其实现为：

public WildcardFileFilter implements LocalFileFilter {
    private String wildcardPattern;

    public WildcardFileFilter(String wildcardPattern) {
        this.wildcardPattern = wildcardPattern;
    }

    @Override
    public boolean accept(LocalSourceFile file) {
        return FilenameUtils.wildcardMatchOnSystem(file.getName(), wildcardPattern);
    }
}