用JAVA下載文件

	//下載文件

	@RequestMapping(value="/toDown", method=RequestMethod.GET)
	public ModelAndView toDown(HttpServletRequest request,HttpServletResponse response) {

		String path;
		path= request.getParameter("path");
		download(path,response);
		
		ModelAndView view =  new ModelAndView("projectDetail", "message", "");
		return view;
	}
	
	public HttpServletResponse download(String path, HttpServletResponse response) {
        try {
            // path是指欲下載的文件的路徑。
            File file = new File(path);
            // 取得文件名。
            String filename = file.getName();
            // 取得文件的後綴名。
            String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();

            // 以流的形式下載文件。
            InputStream fis = new BufferedInputStream(new FileInputStream(path));
            byte[] buffer = new byte[fis.available()];
            fis.read(buffer);
            fis.close();
            // 清空response
            response.reset();
            // 設置response的Header
            response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
            response.addHeader("Content-Length", "" + file.length());
            OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
            response.setContentType("application/octet-stream");
            toClient.write(buffer);
            toClient.flush();
            toClient.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return response;
    }
    

HTML頁面           

					  tbHtml += "<td><a href=toDown?path="+value.path+">下載</a></td>";