论坛 › Mongodb › mongodb中获取图片文件<标记>

火冰狐 发表于 2017-12-16 07:39:36

mongodb中获取图片文件<标记>

@RequestMapping(value="/downLoadFileFormMongo.do",method=RequestMethod.GET)　　@ResponseBody
publicvoid downLoadFileFormMongo(HttpServletRequest request,HttpServletResponse response ) throws Exception {　　String filename
=request.getParameter("fileId");　　GridFSDBFile file
= fileService.retrieveFileOne("fs", filename);　　InputStream in
= file.getInputStream();　　filename
=(String) file.get("aliases");　　filename
=filename.replace(" ", "");　　String fileName
= new String(filename.getBytes("GB2312"), "ISO_8859_1");　　filename
= fileName;//response.setCharacterEncoding("UTF-8");　　
      response.setContentType(file.getContentType());
　　response.setHeader("Content-Disposition", "attachment;filename=" + filename);
　　OutputStream out = response.getOutputStream();
　　byte[] buffer = new byte;
　　int i = -1;
　　while ((i = in.read(buffer)) != -1) {
　　out.write(buffer, 0, i);
　　}      
　　in.close();
　　out.flush();
　　out.close();
　　}

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