java 从在内存中创建ZIP文件，java内存创建zip,private stat

java 从在内存中创建ZIP文件，java内存创建zip,private stat

private static byte[] createZip(Map files) throws IOException {       ByteArrayOutputStream bos = new ByteArrayOutputStream();       ZipOutputStream zipfile = new ZipOutputStream(bos);       Iterator i = files.keySet().iterator();       String fileName = null;       ZipEntry zipentry = null;       while (i.hasNext()) {           fileName = (String) i.next();           zipentry = new ZipEntry(fileName);           zipfile.putNextEntry(zipentry);           zipfile.write((byte[]) files.get(fileName));       }       zipfile.close();       return bos.toByteArray();   }