将ZipOutputStream转换为ByteArrayInputStream [英] Convert ZipOutputStream to ByteArrayInputStream

问题描述

我想使用 ZipOutputStream 压缩 InputStream ，然后获取 InputStream ZipOutputStream 中的code>，而无需将文件保存在光盘上。

I want to compress an InputStream using ZipOutputStream and then get the InputStream from compressed ZipOutputStream without saving file on disc. Is that possible?

推荐答案

我知道了：

public InputStream getCompressed(InputStream is) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();

    ZipOutputStream zos = new ZipOutputStream(bos);
    zos.putNextEntry(new ZipEntry(""));

    int count;
    byte data[] = new byte[2048];
    BufferedInputStream entryStream = new BufferedInputStream(is, 2048);
    while ((count = entryStream.read(data, 0, 2048)) != -1) {
        zos.write( data, 0, count );
    }
    entryStream.close();

    zos.closeEntry();
    zos.close();

    return new ByteArrayInputStream(bos.toByteArray());
}

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