有没有办法用java动态地在zip文件中创建zip ..？

Question

我有一堆文件，说4个文件..我想将2个文件压缩成拉链说“inner.zip” 其余的到“outer.zip”的父目录。

I.e

InputStream streamToReadFile=readFile(filePath);
String zipEntryName = folderName + "/" + fileNameToWrite;
ZipEntry anEntry = new ZipEntry(zipEntryName);

// I couldn't able to create zip in a zip file.

streamToWriteInZip.putNextEntry(anEntry);
while ((bytesIn = streamToReadFile.read(readBuffer)) > 0) {
                    streamToWriteInZip.write(readBuffer, 0, bytesIn);
                }

Answer 1

内部ZipOutputStream应该调用finish()而不是close()，因为finish()会刷新所有压缩数据，但不会关闭外部zip。 介意测试close()的错误，需要添加另一个文件，因为内部zip是最后一个。

    Path sourcePath = Paths.get("C:/D/test.html");
    try (ZipOutputStream zipOut = new ZipOutputStream(
            new FileOutputStream("C:/D/test/test.zip"))) {

        zipOut.putNextEntry(new ZipEntry("file1.txt"));
        Files.copy(sourcePath, zipOut);
        zipOut.closeEntry();

        zipOut.putNextEntry(new ZipEntry("file2.txt"));
        Files.copy(sourcePath, zipOut);
        zipOut.closeEntry();

        zipOut.putNextEntry(new ZipEntry("inner.zip"));
        ZipOutputStream innerZipOut = new ZipOutputStream(zipOut);
        {
            innerZipOut.putNextEntry(new ZipEntry("file3.txt"));
            Files.copy(sourcePath, innerZipOut);
            innerZipOut.closeEntry();

            innerZipOut.putNextEntry(new ZipEntry("file4.txt"));
            Files.copy(sourcePath, innerZipOut);
            innerZipOut.closeEntry();

            innerZipOut.finish(); // Instead of close().
        }
        zipOut.closeEntry();

    } catch (IOException e) {
        e.printStackTrace();
    } // Invoke close().