图片-文件上传下载
Posted yanchaohui
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上传文件
/** * 上传文件 * @return */ @RequestMapping(value = "/uploadfile", method = RequestMethod.POST) public Result uploadImage(@RequestParam("file") MultipartFile file) { try { if (file.isEmpty()) { return Result.error("文件为空"); } // 获取文件名 String fileName = System.currentTimeMillis()+ file.getOriginalFilename(); // 设置文件存储路径 String path = uploadPathConfig.getEventimgpath() + File.separator + fileName; File dest = new File(path); // 检测是否存在目录 if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs();// 新建文件夹 } // 文件写入 file.transferTo(dest); Map<String, Object> result = new HashMap<String, Object>(); result.put("path", File.separator + fileName); return Result.ok().put("result", result); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return Result.error("上传失败"); }
图片路径到不同表字段中，并取路径后缀名
@RequestMapping(value = "/files", method = RequestMethod.POST) public Result imgs(@RequestParam("file") MultipartFile[] file) { try { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); for (int i = 0; i < file.length; i++) { if (file[i].isEmpty()) { return Result.error("文件为空"); } // 获取文件名《后缀》 String fileName = System.currentTimeMillis()+ file[i].getOriginalFilename(); // 设置文件存储路径《后缀》 String path = uploadPathConfig.getEventimgpath() + File.separator + fileName; File dest = new File(path); // 检测是否存在目录 if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs();// 新建文件夹 } // 文件写入 file[i].transferTo(dest); 《后缀名》 String str = fileName.substring(fileName.lastIndexOf(".") + 1); SysFile sysFile = new SysFile(); sysFile.setFilepath(fileName); sysFile.setFilename(fileName); 《后缀名写入。列如.jpg.mp4》 sysFile.setSuffix(str); sysFileService.insert(sysFile); Map<String, Object> map = new HashMap<String, Object>(); map.put("fileid", sysFile.getFileid()); list.add(map); } return Result.ok().put("result", list); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return Result.error("上传失败"); }
@RequestMapping(value = "/files", method = RequestMethod.POST) public Result imgs(@RequestParam("file") MultipartFile[] file) { try { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); for (int i = 0; i < file.length; i++) { if (file[i].isEmpty()) { return Result.error("文件为空"); } // 获取文件名《后缀》 String fileName = System.currentTimeMillis()+ file[i].getOriginalFilename(); // 设置文件存储路径《后缀》 String path = uploadPathConfig.getEventimgpath() + File.separator + fileName; File dest = new File(path); // 检测是否存在目录 if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs();// 新建文件夹 } // 文件写入 file[i].transferTo(dest); 《后缀名》 String str = fileName.substring(fileName.lastIndexOf(".") + 1); SysFile sysFile = new SysFile(); sysFile.setFilepath(fileName); sysFile.setFilename(fileName); 《后缀名写入。列如.jpg.mp4》 sysFile.setSuffix(str); sysFileService.insert(sysFile); Map<String, Object> map = new HashMap<String, Object>(); map.put("fileid", sysFile.getFileid()); list.add(map); } return Result.ok().put("result", list); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return Result.error("上传失败"); }
上传文件2
@RequestMapping(value = "/uploadimages", method = RequestMethod.POST) public Result uploadExcel(HttpServletRequest request) { try { List<MultipartFile> files =((MultipartHttpServletRequest)request).getFiles("files"); if (files.size() == 0) { return Result.error("文件为空"); } JSONArray fileArr = new JSONArray(); for(MultipartFile file : files){ // 获取文件名 String fileName = System.currentTimeMillis() + file.getOriginalFilename(); // 设置文件存储路径 String path = uploadPathConfig.getEventimgpath() + File.separator + fileName; File dest = new File(path); // 检测是否存在目录 if (!dest.getParentFile().exists()) { dest.getParentFile().mkdirs();// 新建文件夹 } // 文件写入 file.transferTo(dest); JSONObject fileObj = new JSONObject(); fileObj.put("imgpath", File.separator + fileName); fileArr.add(fileObj); } return Result.ok().put("result", fileArr); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return Result.error("上传失败"); }
下载文件
@RequestMapping(value = "/fileDownload", method = RequestMethod.POST) public Result downloadFile(HttpServletRequest request, HttpServletResponse response,String fileName,String fileType) { String path=null; if (fileName != null) { // 设置文件存储路径 switch (fileType) { case "1": // 图片 path = uploadPathConfig.getEventimgpath(); break; case "2": // excel文件 path = uploadPathConfig.getExcelpath(); break; case "3": // 压缩包 path = uploadPathConfig.getZippath(); break; case "4": // 文件 path = uploadPathConfig.getFilepath(); break; default: path = uploadPathConfig.getEventimgpath(); break; } } File file = new File(path , fileName); if (file.exists()) { response.setContentType("application/force-download");// 设置强制下载不打开 response.addHeader("Content-Disposition", "attachment;fileName=" + fileName);// 设置文件名 byte[] buffer = new byte[1024]; FileInputStream fis = null; BufferedInputStream bis = null; try { fis = new FileInputStream(file); bis = new BufferedInputStream(fis); OutputStream os = response.getOutputStream(); int i = bis.read(buffer); while (i != -1) { os.write(buffer, 0, i); i = bis.read(buffer); } System.out.println("success"); } catch (Exception e) { e.printStackTrace(); } finally { if (bis != null) { try { bis.close(); } catch (IOException e) { e.printStackTrace(); } } if (fis != null) { try { fis.close(); } catch (IOException e) { e.printStackTrace(); } } } }else{ return Result.error("下载失败"); } return Result.ok("下载成功"); }
删除文件
@RequestMapping(value = "/delFile", method = RequestMethod.POST) public Result removeFileById(String fileid) { try { SysFile sysFile = sysFileService.selectById(fileid); File file=new File(uploadPathConfig.getEventimgpath()+"/"+sysFile.getFilepath()); if(file.exists()&&file.isFile()) file.delete(); sysFileService.deleteById(fileid); return Result.ok(); } catch (Exception e) { e.printStackTrace(); return Result.error("图片删除失败"); } }
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