Android 创建的 Zip 不包含包含的文件大小

Question

我已经通过创建压缩文件为我的应用程序实现了存档用户数据的能力。

我这样创建压缩文件：

try
{
    int iBufferSize = 2048;
    int iByteCount = 0;
    byte btData[] = new byte[iBufferSize];
    File fZipFile = new File(ARCHIVE_FILE);
    FileOutputStream fos = new FileOutputStream(fZipFile);
    ZipOutputStream zos = new ZipOutputStream(fos);

    BufferedInputStream bis = null;
    FileInputStream fIn = null;
    ZipEntry ze = null;
    File[] fPartitions = new File(FILES_PATH).listFiles();
    for(File fPartition : fPartitions)
    {
        lFileSize = fPartition.length();
        fIn = new FileInputStream(fPartition);
        bis = new BufferedInputStream(fIn, iBufferSize);
        ze = new ZipEntry(fPartition.getName());
        ze.setSize(lFileSize);
        zos.putNextEntry(ze);
        while((iByteCount = bis.read(btData, 0, iBufferSize)) != -1)
        {
            zos.write(btData, 0, iByteCount);
        }
        bis.close();
        zos.closeEntry();
    }
    zos.close();

    bis.close();
    fIn.close();
    bOk = true;
}
catch(Exception e)
{
    e.printStackTrace();
}

现在，当我尝试恢复内容时，我无法获得原始文件的大小。这是我进行扩展的方式：

try
{
    // open the archive
    FileInputStream fis = new FileInputStream(fArchive);
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
    bBuffer = new byte[2048];

    // iterate through all files, putting them back into the same place
    ze = zis.getNextEntry();
    while(ze != null)
    {
        strFileName = ze.getName();
        strFileName = FILE_PATH + "/" + strFileName;
        fCheck = new File(strFileName);
        lZipFileSize = ze.getSize(); // <--- returns -1 systematically
        lTargetFileSize = fCheck.length();
        fCheck = null;
        FileOutputStream fos = new FileOutputStream(strFileName);

        // read the data
        while((iCount = zis.read(bBuffer)) != -1)
        {
            fos.write(bBuffer, 0, iCount);
        }
        fos.close();

        ze = zis.getNextEntry();
    }
    zis.close();
    fis.close();
    bOk = true;
}
catch(Exception e)
{
    e.printStackTrace();
}

我注意到 ze.getSize() 系统地返回 -1。

如何存储和获取各个文件的大小？

Answer 1

好的，如果您遇到这个问题，我是这样解决的。

使用 ZipFile class 读取 zip 文件。灵感来自 ZipInputStream: getting file size of -1 when reading and The ZipFileTest.java Android example source code

Android 创建的 Zip 不包含包含的文件大小

Android created Zip does not hold contained file sizes

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