import java.util.*

import com.haulmont.cuba.core.global.*

import com.haulmont.cuba.core.entity.*;

import com.groupstp.rtneo.entity.*

import com.haulmont.cuba.core.entity.FileDescriptor

import com.haulmont.cuba.core.app.FileStorageAPI

import java.io.InputStream

import java.io.InputStreamReader

import java.io.ByteArrayOutputStream

import org.apache.commons.io.IOUtils

import java.nio.charset.StandardCharsets;

import com.opencsv.CSVReader;

import org.apache.commons.collections.CollectionUtils

import java.util.stream.Collectors;

FileStorageAPI fileStorageAPI=AppBeans.get(FileStorageAPI.NAME);

//ID файла

String id='8de21a4e-b9cd-2a13-0b8b-a9136c738a7e'

FileDescriptor fd = dataManager.load(FileDescriptor.class)

.id(UuidProvider.fromString(id))

.view(View.MINIMAL)

.optional().orElse(null);

if(fd == null){throw new RuntimeException("fileNotFound")}

InputStream inputStream=fileStorageAPI.openStream(fd)

CSVReader reader = new CSVReader(new InputStreamReader(inputStream, "UTF-8"));

List<String> listInn = reader.readAll().stream()

.map{e->e[0]}.collect(Collectors.toList())