java怎么利用SmbFile读取远程服务器的zip包中的文件。已经做到了远程读整个文件，怎么只读zip中的指定文件

SmbFile smbFile = new SmbFile(zipFile);            System.out.println("smbFile:--"+zipFile);            SmbFileInputStream in = new SmbFileInputStream(smbFile);            ZipInputStream zip = new ZipInputStream(in);            ZipEntry entry = null;            boolean exist = false;            while((entry = zip.getNextEntry()) != null)            {                System.out.println(entry.getName());                if(entry.getName().equals(filename)){                     response.setContentType("application/octet-stream");                     response.setHeader("Content-disposition", "attachment; filename=" + filename);                     OutputStream out = response.getOutputStream();                     byte[] b = new byte[1024];                      int n;                      while((n = zip.read(b)) != -1)                      {                         out.write(b, 0, n);                      }                      out.flush();                      out.close();                      exist = true;                      break;                }              }              zip.close();