JAVA 根据Url把多文件打包成ZIP下载实例

public class UrlFilesToZip { private static final Logger logger = LoggerFactory.getLogger(UrlFilesToZip.class); //根据文件链接把文件下载下来并且转成字节码 public byte[] getImageFromURL(String urlPath) {  byte[] data = null;  InputStream is = null;  HttpURLConnection conn = null;  try {   URL url = new URL(urlPath);   conn = (HttpURLConnection) url.openConnection();   conn.setDoInput(true);   // conn.setDoOutput(true);   conn.setRequestMethod("GET");   conn.setConnectTimeout(6000);   is = conn.getInputStream();   if (conn.getResponseCode() == 200) {    data = readInputStream(is);   } else {    data = null;   }  } catch (MalformedURLException e) {   logger.error("MalformedURLException", e);  } catch (IOException e) {   logger.error("IOException", e);  } finally {   try {    if (is != null) {     is.close();    }   } catch (IOException e) {    logger.error("IOException", e);   }   conn.disconnect();  }  return data; } public byte[] readInputStream(InputStream is) {  ByteArrayOutputStream baos = new ByteArrayOutputStream();  byte[] buffer = new byte[1024];  int length = -1;  try {   while ((length = is.read(buffer)) != -1) {    baos.write(buffer, 0, length);   }   baos.flush();  } catch (IOException e) {   logger.error("IOException", e);  }  byte[] data = baos.toByteArray();  try {   is.close();   baos.close();  } catch (IOException e) {   logger.error("IOException", e);  }  return data; }}

public void filesdown(HttpServletResponse response){ try {   String filename = new String("xx.zip".getBytes("UTF-8"), "ISO8859-1");//控制文件名编码   ByteArrayOutputStream bos = new ByteArrayOutputStream();   ZipOutputStream zos = new ZipOutputStream(bos);   UrlFilesToZip s = new UrlFilesToZip();   int idx = 1;   for (String oneFile : urls) {    zos.putNextEntry(new ZipEntry("profile" + idx);    byte[] bytes = s.getImageFromURL(oneFile);    zos.write(bytes, 0, bytes.length);    zos.closeEntry();    idx++;   }   zos.close();   response.setContentType("application/force-download");// 设置强制下载不打开   response.addHeader("Content-Disposition", "attachment;fileName=" + filename);// 设置文件名   OutputStream os = response.getOutputStream();   os.write(bos.toByteArray());   os.close();  } catch (FileNotFoundException ex) {   logger.error("FileNotFoundException", ex);  } catch (Exception ex) {   logger.error("Exception", ex);  } } }