文件上传下载操作

文件下载

	public void doDownload(HttpServletRequest request, HttpServletResponse response){
		String id = request.getParameter("sheet_no");
		Htwd hw = MgrHtwd.selectById(id);
		String cflj = hw.getCflj();
		String wdmc = hw.getWdmc();
		String wdm = hw.getWdm();
		File file = new File(cflj + "\\" + wdm);
		try {
			InputStream is = new FileInputStream(file);
			OutputStream os = response.getOutputStream();
			BufferedInputStream bis = new BufferedInputStream(is);
			BufferedOutputStream bos = new BufferedOutputStream(os);
			wdmc = java.net.URLEncoder.encode(wdmc, "UTF-8");
			wdmc = new String(wdmc.getBytes("UTF-8"), "GBK");
			response.reset();
			response.setCharacterEncoding("UTF-8");
			response.setContentType("application/x-msdownload");
			response.setHeader("Content-Disposition", "attachment; filename="+ wdmc);
			int bytesRead = 0;
			byte[] buffer = new byte[1024];
			while ((bytesRead = bis.read(buffer)) != -1) {
				bos.write(buffer, 0, bytesRead);//
			}
			bos.flush();
			bis.close();
			bos.close();
			is.close();
			os.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

文件上传

	@SuppressWarnings("deprecation")
	public void doUpload(HttpServletRequest request, HttpServletResponse response,ActionForm form){
		//获取文档参数
		Date d = new Date();
		SimpleDateFormat format = new SimpleDateFormat();
		format.applyPattern("yyyyMMddHHmmss");
		String sjc = format.format(d);
		String oper_id="";
		User user = (User)request.getSession().getAttribute("user");
		if(user!=null){
			oper_id = user.getOper_id();
		}
		String htid = request.getParameter("sheet_no");
		String file_type = request.getParameter("filetype");
		HtwdForm hf = (HtwdForm)form;
		FormFile ff = hf.getTheFile();
		String cflj = request.getRealPath("scwd");
		String wdmc=request.getParameter("filename");
		
		//设置对象,保存到数据库
		Htwd hw = new Htwd();
		if(!"".equals(file_type)){hw.setFile_type(file_type);};
		hw.setCflj(cflj);
		hw.setHtid(htid);
		hw.setOper_id(oper_id);
		hw.setWdm(sjc+oper_id+wdmc.substring(wdmc.indexOf("."), wdmc.length()));
		hw.setWdmc(wdmc);
		AnswerUtil au = MgrHtwd.insert(hw);
		//进行文档操作
		if(au.getFlag()){
			try{
				InputStream stream = ff.getInputStream();
				OutputStream bos = new FileOutputStream(cflj + "/"+ sjc+oper_id+wdmc.substring(wdmc.indexOf("."), wdmc.length()));
				System.out.println(cflj + "/"+ sjc+oper_id+wdmc.substring(wdmc.indexOf("."), wdmc.length()));
				int bytesRead = 0;
				byte[] buffer = new byte[8192];
				while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
					bos.write(buffer, 0, bytesRead);
				}
				bos.close();
				stream.close();
			}catch(Exception e){
				e.printStackTrace();
				au.setInfo(au.getInfo()+"文档操作错误:"+e.getMessage());
			}
		}
		request.setAttribute("sheet_no", htid);
		request.setAttribute("msg", au.getFlag());
		request.setAttribute("info", au.getInfo().toString());
	}