粘贴即用
/**
* 根据文件，进行压缩为zip，批量下载
* @param response
* @param files
* @param zipName
*/
public void downloadBatchByFile(HttpServletResponse response, Map<String, byte[]> files, String zipName){
try{
response.setContentType("application/x-msdownload");
response.setHeader("content-disposition", "attachment;filename="+URLEncoder.encode(zipName, "utf-8"));
ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
BufferedOutputStream bos = new BufferedOutputStream(zos);
for(Entry<String, byte[]> entry : files.entrySet()){
String fileName = entry.getKey(); //每个zip文件名
byte[] file = entry.getValue(); //这个zip文件的字节
BufferedInputStream bis = new BufferedInputStream(new ByteArrayInputStream(file));
zos.putNextEntry(new ZipEntry(fileName));
int len = 0;
byte[] buf = new byte[10 * 1024];
while( (len=bis.read(buf, 0, buf.length)) != -1){
bos.write(buf, 0, len);
}
bis.close();
bos.flush();
}
bos.close();
}catch(Exception e){
e.printStackTrace();
}
}