在Apache MINA SFTP中,可以使用SymbolicLinkResolver接口来处理符号链接。下面是一个示例代码,演示了如何使用SymbolicLinkResolver来处理符号链接:
首先,创建一个自定义的SymbolicLinkResolver实现类,例如SymbolicLinkResolverImpl:
import org.apache.sshd.common.file.FileSystemFactory;
import org.apache.sshd.common.file.FileSystemView;
import org.apache.sshd.common.file.SshFile;
import org.apache.sshd.common.file.nativefs.NativeFileSystemFactory;
import org.apache.sshd.common.file.nativefs.NativeSshFile;
public class SymbolicLinkResolverImpl implements SymbolicLinkResolver {
private final FileSystemFactory fileSystemFactory;
public SymbolicLinkResolverImpl() {
fileSystemFactory = new NativeFileSystemFactory();
}
@Override
public SshFile resolve(FileSystemView fileSystemView, SshFile sshFile) throws IOException {
if (sshFile instanceof NativeSshFile) {
NativeSshFile nativeSshFile = (NativeSshFile) sshFile;
if (nativeSshFile.isSymbolicLink()) {
// 解析符号链接
String targetPath = nativeSshFile.getSymbolicLinkTarget();
SshFile targetFile = fileSystemFactory.createNativeSshFile(nativeSshFile.getRoot(), targetPath, null);
if (targetFile.doesExist()) {
return targetFile;
}
}
}
return sshFile;
}
}
然后,在你的SFTP服务器配置中,设置SymbolicLinkResolver:
SftpSubsystemFactory factory = new SftpSubsystemFactory.Builder()
.symbolicLinkResolver(new SymbolicLinkResolverImpl())
.build();
SshServer sshd = SshServer.setUpDefaultServer();
sshd.setSubsystemFactories(Collections.singletonList(factory));
// 其他配置...
sshd.start();
这样,当客户端通过SFTP访问服务器上的符号链接时,SymbolicLinkResolverImpl中的resolve方法会被调用,并根据符号链接的目标路径返回实际的文件对象。