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SpringMvc文件下载
1 /** 2 * 文件下载 3 * @Description: 4 * @param fileName 5 * @param request 6 * @param response 7 * @return 8 */ 9 @RequestMapping("/download") 10 public String downloadFile(@RequestParam("fileName") String fileName, 11 HttpServletRequest request, HttpServletResponse response) { 12 if (fileName != null) { 13 String realPath = request.getServletContext().getRealPath( 14 "WEB-INF/File/"); 15 File file = new File(realPath, fileName); 16 if (file.exists()) { 17 response.setContentType("application/force-download");// 设置强制下载不打开 18 response.addHeader("Content-Disposition", 19 "attachment;fileName=" + fileName);// 设置文件名 20 byte[] buffer = new byte[1024]; 21 FileInputStream fis = null; 22 BufferedInputStream bis = null; 23 try { 24 fis = new FileInputStream(file); 25 bis = new BufferedInputStream(fis); 26 OutputStream os = response.getOutputStream(); 27 int i = bis.read(buffer); 28 while (i != -1) { 29 os.write(buffer, 0, i); 30 i = bis.read(buffer); 31 } 32 } catch (Exception e) { 33 // TODO: handle exception 34 e.printStackTrace(); 35 } finally { 36 if (bis != null) { 37 try { 38 bis.close(); 39 } catch (IOException e) { 40 // TODO Auto-generated catch block 41 e.printStackTrace(); 42 } 43 } 44 if (fis != null) { 45 try { 46 fis.close(); 47 } catch (IOException e) { 48 // TODO Auto-generated catch block 49 e.printStackTrace(); 50 } 51 } 52 } 53 } 54 } 55 return null; 56 }
SpringMvc文件下载
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