无法使用带有Java7和Java8的ZipInputStream提取zip64存档

时间:2019-02-19 12:10:40

标签: java zip compression zipinputstream apache-commons-compress

我正在使用以下代码从zip存档中提取文件。

public static List<String> unzipFiles(File zipFile, File targetDirectory) {
    List<String> files = new ArrayList<String>();
    BufferedOutputStream dest = null;
    FileInputStream fileInputStream = null;
    ZipInputStream zipInputStream = null;
    try {
        fileInputStream = new FileInputStream(zipFile);
        zipInputStream = new ZipInputStream(new BufferedInputStream(
                fileInputStream));
        ZipEntry zipEntry;
        int count = 0;
        while ((zipEntry = zipInputStream.getNextEntry()) != null) {
            log.debug("Extracting File Name :: " + zipEntry);
            count++;
            int length;
            byte data[] = new byte[bufferGlb];
            String fileName = zipEntry.getName();
            File opFile = new File(targetDirectory, fileName);
            FileOutputStream fileOutputStream = new FileOutputStream(opFile);
            dest = new BufferedOutputStream(fileOutputStream, bufferGlb);
            while ((length = zipInputStream.read(data, 0, bufferGlb)) != -1) {
                dest.write(data, 0, length);
            }
            dest.flush();
            files.add(fileName);
            fileOutputStream.close();
        }
        log.debug("Total " + count + " Files Unziped Successfully ");
    } catch (Exception e) {
        log.error("Error occured in unzipping the file " + zipFile, e);
    }
}

此代码适用于常规zip存档,但不适用于zip64存档。据我所知,Java7 / Java8(ZipInputStream类)应支持zip64,但出现以下异常。

java.util.zip.ZipException: invalid entry size (expected 0 but got 21504 bytes)
at java.util.zip.ZipInputStream.readEnd(ZipInputStream.java:384)
at java.util.zip.ZipInputStream.read(ZipInputStream.java:196)

但是,可以使用commons-compress ZipArchiveInputStream从zip64中提取文件。

任何想法为何使用Java API(ZipInputStream)都无法实现相同的目的。

0 个答案:

没有答案