创建任意数据和大小的tar流

import tarfile

with tarfile.open("example.tar", "w") as tar:
    tar.add("file1.txt")
    tar.add("file2.txt")

import org.apache.commons.compress.archivers.ArchiveOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class TarExample {
    public static void main(String[] args) throws IOException {
        try (FileOutputStream fos = new FileOutputStream("example.tar.gz");
             GzipCompressorOutputStream gcos = new GzipCompressorOutputStream(fos);
             ArchiveOutputStream aos = new TarArchiveOutputStream(gcos)) {
            addFileToTar(aos, new File("file1.txt"), "file1.txt");
            addFileToTar(aos, new File("file2.txt"), "file2.txt");
        }
    }

    private static void addFileToTar(ArchiveOutputStream aos, File file, String name) throws IOException {
        aos.putArchiveEntry(aos.createArchiveEntry(file, name));
        try (FileInputStream fis = new FileInputStream(file)) {
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = fis.read(buffer)) != -1) {
                aos.write(buffer, 0, bytesRead);
            }
        }
        aos.closeArchiveEntry();
    }
}

const tar = require('tar-stream');
const fs = require('fs');

const pack = tar.pack();

pack.entry({ name: 'file1.txt' }, 'Hello world!');
pack.entry({ name: 'file2.txt' }, 'Goodbye world!');

pack.finalize();

pack.pipe(fs.createWriteStream('example.tar'));