springmvc 批量下载，

/**

  * 批量下载product图片

  * @param request

  * @param response

  * @param productId

  */

 @RequestMapping(value="/downBatchProductImage")

 public void downBatchProductImage(HttpServletRequest request, HttpServletResponse response, Long productId){

 

  String productZipFileName = productId.toString();

 //获取url集合 接口自己填上

  List<String> imguri = “”；

 

  File directory = null;

 

  try {

   

   for (int i = 0; i < imguri.size(); i++) {

    ProductAssistController.saveProductFileFromURL(productZipFileName, Constants.ND+imguri.get(i));

   }

   

  } catch (Exception e) {

   

   LOGGER.error(e.getMessage(), e);

   

  }

  directory = new File(productZipFileName);

  if(directory.isDirectory()){

 

   File[] listFiles = directory.listFiles();

   ZipOutputStream zos = null;

   FileInputStream fis = null;

   try {

   

    zos = new ZipOutputStream(new FileOutputStream(productZipFileName+".zip"));

    for (int i = 0; i < listFiles.length; i++) {

     

     File file = listFiles[i];

     

     fis = new FileInputStream(file);

     

     zos.putNextEntry(new ZipEntry(file.getName()));

     

     int len;

     

     //读入需要下载的文件的内容，打包到zip文件

     byte[] buffer = new byte[1024];

     

     while((len = fis.read(buffer))>0) {

     

      zos.write(buffer,0,len);

     

     }

     

    }

   

    if(null != zos){

     

     zos.flush();

     zos.close();

     

    }if(null != fis){

     

     fis.close();

     

    }

   

   } catch (Exception e) {

   

    LOGGER.error(e.getMessage(), e);

 

   }finally{

   

    ProductAssistController.delFileOrDirectory(productZipFileName);

   

   }

  }

 

   OutputStream out = null;

 

   try {

   

    out = response.getOutputStream();

    String filesrc = productZipFileName+".zip";

   

    File file = new File(filesrc);

   

    if(file.exists()){

     

     InputStream fis = new FileInputStream(file);

     BufferedInputStream bis = new BufferedInputStream(fis);

     

     BufferedOutputStream bos = new BufferedOutputStream(out);

     response.setContentType("application/x-download");

     response.setHeader( "Content-disposition","attachment;filename="+URLEncoder.encode(filesrc,"UTF-8"));

     

     int byteRead = 0;

     byte[] buffer = new byte[1024];

     

     while ((byteRead = bis.read(buffer,0,1024))!=-1){

     

      bos.write(buffer, 0, byteRead);

     

     }

     

     bos.flush();

     fis.close();

     bis.close();

     out.close();

     bos.close();

     

    }

   

    if(file.exists()){

     

     file.delete();

   

    }

   

   } catch (IOException e) {

   

    LOGGER.error(e.getMessage(), e);

   

   }

   

 }

/**

*

*通过URL 请求imguri文件

*

*/

 public static void saveProductFileFromURL(String productId,String imguri){

 

  FileOutputStream fos = null;

  BufferedInputStream bis = null;

  HttpURLConnection huc = null;

  try {

   

  URL url = new URL(imguri);

 

  huc = (HttpURLConnection) url.openConnection();

  huc.connect();

  bis = new BufferedInputStream(huc.getInputStream());

  File file = new File(productId);

 

  if(!file.exists() || !file.isDirectory()){

   file.mkdir();

  }

 

  fos = new FileOutputStream(file+"/"+FilenameUtils.getName(imguri));

 

  byte[] bufbyte = new byte[1024];

  int size = 0;

  while ((size = bis.read(bufbyte) )!= -1){

   fos.write(bufbyte,0,size);

  }

 

  fos.flush();

 

  } catch (Exception e) {

   e.printStackTrace();

  }finally{

   

   try {

    if(fos!=null)

    fos.close();

    if(bis!=null)

    bis.close();

    if(huc!=null)

    huc.disconnect();

   

   } catch (IOException e) {

    e.printStackTrace();

   }

  }

 }

/**

*使用后删除文件

*

*/

public static void delFileOrDirectory(String productId){

  File files = new File(productId);

  if(files.exists() && files.isDirectory()){

   File[] listFiles = files.listFiles();

   for (int i = 0; i < listFiles.length; i++) {

    File file = listFiles[i];

    if(file.isFile()){

     file.delete();

    }

   }

  }

  files.delete();

 }

//完事。看完评价。bug未测，目测没问题

/**

  * 批量下载product图片

  * @param request

  * @param response

  * @param productId

  */

 @RequestMapping(value="/downBatchProductImage")

 public void downBatchProductImage(HttpServletRequest request, HttpServletResponse response, Long productId){

 

  String productZipFileName = productId.toString();

 

  List<String> imguri = RemoteServiceSingleton.getInstance().getDealerProductService().findAllProdUrlByProductId(productId, "");

 

  File directory = null;

 

  try {

   

   for (int i = 0; i < imguri.size(); i++) {

    ProductAssistController.saveProductFileFromURL(productZipFileName, Constants.ND+imguri.get(i));

   }

   

  } catch (Exception e) {

   

   LOGGER.error(e.getMessage(), e);

   

  }

  directory = new File(productZipFileName);

  if(directory.isDirectory()){

 

   File[] listFiles = directory.listFiles();

   ZipOutputStream zos = null;

   FileInputStream fis = null;

   try {

   

    zos = new ZipOutputStream(new FileOutputStream(productZipFileName+".zip"));

    for (int i = 0; i < listFiles.length; i++) {

     

     File file = listFiles[i];

     

     fis = new FileInputStream(file);

     

     zos.putNextEntry(new ZipEntry(file.getName()));

     

     int len;

     

     //读入需要下载的文件的内容，打包到zip文件

     byte[] buffer = new byte[1024];

     

     while((len = fis.read(buffer))>0) {

     

      zos.write(buffer,0,len);

     

     }

     

    }

   

    if(null != zos){

     

     zos.flush();

     zos.close();

     

    }if(null != fis){

     

     fis.close();

     

    }

   

   } catch (Exception e) {

   

    LOGGER.error(e.getMessage(), e);

 

   }finally{

   

    ProductAssistController.delFileOrDirectory(productZipFileName);

   

   }

  }

 

   OutputStream out = null;

 

   try {

   

    out = response.getOutputStream();

    String filesrc = productZipFileName+".zip";

   

    File file = new File(filesrc);

   

    if(file.exists()){

     

     InputStream fis = new FileInputStream(file);

     BufferedInputStream bis = new BufferedInputStream(fis);

     

     BufferedOutputStream bos = new BufferedOutputStream(out);

     response.setContentType("application/x-download");

     response.setHeader( "Content-disposition","attachment;filename="+URLEncoder.encode(filesrc,"UTF-8"));

     

     int byteRead = 0;

     byte[] buffer = new byte[1024];

     

     while ((byteRead = bis.read(buffer,0,1024))!=-1){

     

      bos.write(buffer, 0, byteRead);

     

     }

     

     bos.flush();

     fis.close();

     bis.close();

     out.close();

     bos.close();

     

    }

   

    if(file.exists()){

     

     file.delete();

   

    }

   

   } catch (IOException e) {

   

    LOGGER.error(e.getMessage(), e);

   

   }

   

 }

/**

*

*通过URL 请求imguri文件

*

*/

 public static void saveProductFileFromURL(String productId,String imguri){

 

  FileOutputStream fos = null;

  BufferedInputStream bis = null;

  HttpURLConnection huc = null;

  try {

   

  URL url = new URL(imguri);

 

  huc = (HttpURLConnection) url.openConnection();

  huc.connect();

  bis = new BufferedInputStream(huc.getInputStream());

  File file = new File(productId);

 

  if(!file.exists() || !file.isDirectory()){

   file.mkdir();

  }

 

  fos = new FileOutputStream(file+"/"+FilenameUtils.getName(imguri));

 

  byte[] bufbyte = new byte[1024];

  int size = 0;

  while ((size = bis.read(bufbyte) )!= -1){

   fos.write(bufbyte,0,size);

  }

 

  fos.flush();

 

  } catch (Exception e) {

   e.printStackTrace();

  }finally{

   

   try {

    if(fos!=null)

    fos.close();

    if(bis!=null)

    bis.close();

    if(huc!=null)

    huc.disconnect();

   

   } catch (IOException e) {

    e.printStackTrace();

   }

  }

 }

/**

*使用后删除文件

*

*/

public static void delFileOrDirectory(String productId){

  File files = new File(productId);

  if(files.exists() && files.isDirectory()){

   File[] listFiles = files.listFiles();

   for (int i = 0; i < listFiles.length; i++) {

    File file = listFiles[i];

    if(file.isFile()){

     file.delete();

    }

   }

  }

  files.delete();

 }