java将文件批量打包后并下载

struts2 ，spring，spring jdbc框架:

//批量下载
	function batch_dowload(){
	//	window.open("detail/in!batchDowload");

		Limit.excel({url:'detail/in!batchDowload', root:'NODE_HJMX_HRMX', keys:['start_time', 'end_time'], form:'limit_form'});
	}

<pre name="code" class="java">/**
	 * 批量下载
	 */
	public void batchDowload(){
		String ent_id = (String) Util.session().getAttribute("ent_id");
		
		try {
			end_time = longSdf.parse(shortSdf.format(end_time.getTime()) + " 23:59:59");
		} catch (ParseException e) {
			e.printStackTrace();
		}
		orderby = orderkey + " " + ordersc;
		
		//数据库读取数据列表
		List<Map<String, Object>> datas = service.findPageList(null, c_agent, cdr, start_time, end_time, orderby, ent_id, timeStart, timeEnd);
		
		InputStream inStream = null; 
		OutputStream servletOS = null;
		try {
			HttpServletResponse response = Util.response();
			
			Properties properties = FooUtil.read("/system.properties");
			String osName = Util.osName();
			String path = properties.getProperty("path.record." + osName);
			
			List<File> listFile = new ArrayList<File>();
			File file = new File(path);
			File[] files = file.listFiles();
			
			for(File f : files){
				 if(f.isFile()){
					 if(!f.getName().substring(f.getName().lastIndexOf(".")+1, f.getName().length()).equals("zip")){
						 String str_record_name = f.getName().subSequence(0, f.getName().length()).toString();
						 
						 for(Map<String, Object> data : datas){
							String record_name = data.get("record_name").toString();
							if(record_name != null && !record_name.equals("")){
								if(str_record_name.equals(record_name)){
									listFile.add(f);
								}
							}
							
						}
					 }
				 }
			}
			
			if(listFile != null){
				Date date = new Date();
				String zipFileName =DateUtil.format(date, "yyyyMMddHHmmss") + ".zip";
				File strZipFile = new File(zipFileName);//最终打包的压缩包
				String strZipPath = path + strZipFile;
				ZipOutputStream outputStream= new ZipOutputStream(new FileOutputStream(strZipPath));
				
				for(int i=0;i<listFile.size();i++){
					File inputFile = listFile.get(i);
					
					if(inputFile.isFile()){	//文件是否存在
						FileInputStream in = new FileInputStream(inputFile);
						BufferedInputStream bins = new BufferedInputStream(in, 4096);
						
						ZipEntry entry = new ZipEntry(inputFile.getName());
						outputStream.putNextEntry(entry);
						
						(如果在下载过程中，需要对打包中的文件重命名：
						  不能用renameTo， 此方法对文件相当于剪切，原文件就没有了。
						for(Map<String, Object> data : datas){
							String record_name = data.get("record_name").toString();
							String agent_id = data.get("agent_id").toString();
							String src = data.get("src").toString();
							if(record_name != null && !record_name.equals("")){
								if(inputFile.getName().equals(record_name)){
//									inputFile.renameTo(new File(agent_id+src+".wav"));
									ZipEntry entry = new ZipEntry(agent_id+src+".wav");
									outputStream.putNextEntry(entry);
								}
							}
						 }
						)
						
						int nNumber;
						byte[] buffer = new byte[4096];
						while((nNumber = bins.read(buffer)) != -1){
							outputStream.write(buffer, 0, nNumber);
						}
						outputStream.closeEntry();
						bins.close();
						in.close();
					}
				}
				outputStream.close();
				
				String zipPath = path + zipFileName;
				File zipfile = new File(zipPath);
				if (zipfile.exists()) {
					String zipFilename = URLEncoder.encode(zipfile.getName(), "utf-8");
				    response.reset();
				    response.setContentType("application/x-msdownload");
				    response.addHeader("Content-Disposition", "attachment; filename=\"" + zipFilename + "\"");
				    int zipFileLength = (int) zipfile.length();
				    response.setContentLength(zipFileLength);
				    if (zipFileLength != 0) {
				        inStream = new FileInputStream(zipfile);
				        byte[] buf = new byte[4096];
				        servletOS = response.getOutputStream();
				        int readLength;
				        while (((readLength = inStream.read(buf)) != -1)) {
				            servletOS.write(buf, 0, readLength);
				        }
				        inStream.close();
				        servletOS.flush();
				        servletOS.close();
				    }
				}
			}else {
				Util.out("打包文件不存在");
			}
		} catch (IOException e) {
			Util.out("批量下载录音为空");
		}finally {
				try {
					if(inStream != null) {
						inStream.close();
					}
				} catch (IOException e) {
				}
				try {
					if(servletOS != null) {
						servletOS.flush();
						servletOS.close();
					}
				} catch (IOException e) {
				}
			}
		
	}