下載文件javascript
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub //doPost(request, response); //System.out.println("下載"); response.setContentType("application/x-download"); PropertyBean propertyBeanURL = new PropertyBean(); propertyBeanURL.setPropertiesFile("mail.properties"); propertyBeanURL.init(); String tempUrl = propertyBeanURL.get("temp"); String filePath = tempUrl+ File.separatorChar+ "CrmUpload" +File.separatorChar; String filedownload = filePath + "tcsl_mobile.xls"; //String filePath = getPropertyBean("ticketFilePath"); //"E:\\CrmUpload\\"; //String filedownload = filePath + getPropertyBean("ticketTemplatesFile"); //filePath + "mobile.xls";//文件名 String filedisplay = "非會員電話號碼模版.xls";//下載文件時顯示的文件保存名稱 String filenamedisplay = URLEncoder.encode(filedisplay,"UTF-8"); response.addHeader("Content-Disposition","attachment;filename=" + filenamedisplay); OutputStream outp = null; FileInputStream in = null; try { outp = response.getOutputStream(); File truefile=new File(filedownload); in = new FileInputStream(truefile); byte[] b = new byte[1024]; int i = 0; while((i = in.read(b)) > 0){ outp.write(b, 0, i); } outp.flush(); } catch(Exception e) { //System.out.println("Error!"); logger.error(e.getMessage(),e); } finally { if(in != null) { in.close(); in = null; } if(outp != null) { outp.close(); outp = null; } } }
接收文件(此例是接收xls文件,並解析)html
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); response.setCharacterEncoding("UTF-8"); request.setCharacterEncoding("UTF-8"); PrintWriter out = response.getWriter(); final long MAX_SIZE = 1024 * 1024 * 1;// 設置上傳文件最大爲1G 1B *1024 = 1*1024 = 1M *1024 = 1G // 上傳文件路徑 //String filePath = getPropertyBean("ticketFilePath"); //"E:\\CrmUpload\\"; PropertyBean propertyBeanURL = new PropertyBean(); propertyBeanURL.setPropertiesFile("mail.properties"); propertyBeanURL.init(); String tempUrl = propertyBeanURL.get("temp"); String filePath = tempUrl+ File.separatorChar+ "CrmUpload" +File.separatorChar; //System.out.println(filePath); try { checkPath(filePath); } catch (Exception e1) { e1.printStackTrace(); } // 臨時存放目錄 String tempPath = filePath + "temp"+File.separator; try { checkPath(tempPath); } catch (Exception e1) { e1.printStackTrace(); } // 實例化一個硬盤文件工廠,用來配置上傳組件ServletFileUpload DiskFileItemFactory dfif = new DiskFileItemFactory(); // 設置上傳文件時用於臨時存放文件的內存大小,這裏是5M.多於的部分將臨時存在硬盤 dfif.setSizeThreshold(1024 * 1024 * 5); // 設置存放臨時文件的目錄 dfif.setRepository(new File(tempPath)); // 用以上工廠實例化上傳組件 ServletFileUpload sfu = new ServletFileUpload(dfif); // 設置最大上傳尺寸 sfu.setSizeMax(MAX_SIZE); // 從request獲得 全部 上傳域的列表 List fileList = null; try { fileList = sfu.parseRequest(request); } catch (FileUploadException e) {// 處理文件尺寸過大異常 if (e instanceof SizeLimitExceededException) { //System.out.println("導入文件大小不能超過1M"); out.println(showMsg("導入文件大小不能超過1M!")); return; } logger.error(e.getMessage(),e); } // 沒有選擇上傳文件 if (fileList == null || fileList.size() == 0) { //System.out.println("請選擇導入文件"); out.println(showMsg("請選擇導入文件")); return; } // 獲得全部上傳的文件 Iterator fileItr = fileList.iterator(); // 循環處理全部文件 while (fileItr.hasNext()) { FileItem fileItem = null; String path = null; double size = 0; // 獲得當前文件 fileItem = (FileItem) fileItr.next(); // 忽略簡單form字段而不是上傳域的文件域(<input type="text" />等) if (fileItem == null || fileItem.isFormField()) { continue; } // 獲得文件的完整路徑 path = fileItem.getName(); // 獲得文件的大小 size = fileItem.getSize(); // 獲得去除路徑的文件名 String t_name = path.substring(path.lastIndexOf(File.separator) + 1); // 獲得文件的擴展名(無擴展名時將獲得全名) String t_ext = t_name.substring(t_name.lastIndexOf(".") + 1); if (!"xls".equalsIgnoreCase(t_ext)) { out.println(showMsg("請使用正確的電話號碼模版文件導入!")); break; } //生成文件名 SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSSS"); String newname = sdf.format((new Date()).getTime()); t_name = newname + RandomStringUtils.randomNumeric(3); // 保存的最終文件完整路徑,保存在e盤upload目錄下 String u_name = filePath + t_name + "." + t_ext; String u_size = ""; try { // 保存文件 fileItem.write(new File(u_name)); if (size > 1024 * 1024) u_size = (float) Math.round(size * 100 / (1024 * 1024)) / 100 + "MB"; else u_size = (float) Math.round(size * 100 / 1024) / 100 + "KB"; //System.out.println("文件名:" + t_name + "上傳完成。文件大小:" + u_size); out.println(showMsg("導入文件加載完畢,正在解析,請稍候...")); POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(u_name)); HSSFWorkbook workBook = new HSSFWorkbook(fs); try { HSSFSheet sheet = workBook.getSheetAt(0); int rows = sheet.getPhysicalNumberOfRows(); rows = 3001; //1萬行數據 if (rows > 0) { sheet.getMargin(Sheet.TopMargin); List<MobileListDto> list = new ArrayList<MobileListDto>(); for (int j = 1; j < rows; j++) { //從第2行開始 HSSFRow row = sheet.getRow(j); if (row == null) { continue; } int cells = row.getLastCellNum(); // 是獲取最後一個不爲空的列是第幾個 if (cells < 1){ out.println(showMsg("電話號碼文件格式不符合要求!")); break; } HSSFCell cell0 = row.getCell(0); //姓名列 HSSFCell cell1 = row.getCell(1); //手機號碼列 // System.out.println(cell.getRichStringCellValue()); MobileListDto mld = new MobileListDto(); String rname = ""; String rmobile = ""; if (cell0 != null){ switch (cell0.getCellType()) { case Cell.CELL_TYPE_STRING: rname = cell0.getRichStringCellValue().toString(); break; case Cell.CELL_TYPE_NUMERIC: rname = new DecimalFormat("0").format(cell0.getNumericCellValue()); break; } } else { rname = ""; } if (cell1!=null) { switch (cell1.getCellType()) { case Cell.CELL_TYPE_STRING: rmobile = cell1.getRichStringCellValue().toString(); break; case Cell.CELL_TYPE_NUMERIC: rmobile = new DecimalFormat("0").format(cell1.getNumericCellValue()); break; } } else { rmobile = ""; } rmobile = checkMobile(rmobile); if ("".equals(rname)){ rname = "未知"; } //System.out.println(rname +"--"+rmobile); // 手機號不爲空 且 都是數字號碼 if (!"".equals(rmobile) && NumberUtils.isNumber(rmobile)){ mld.setcName(rname); mld.setcMobile(rmobile); list.add(mld); } } // 去除重複 list = removeDuplicateWithOrder(list); if (list != null && !list.isEmpty()) { //System.out.println("開始json"); //若list不爲空,則將其轉換成JSON對象,並存入jsonArray中 JSONArray jsonArray = JSONArray.fromObject(list); //下面就是把存有查詢結果的JSON對象返給頁面 //System.out.println(jsonArray); out.println("<script type=\"text/javascript\">parent.rtnList("+jsonArray+");</script>"); } out.println(showMsg("共成功導入" + String.valueOf(list.size())+"個手機號碼!")); } out.flush(); out.close(); delFile(u_name); } catch (Exception e) { out.println(showMsg("電話號碼文件解析出錯!")); delFile(u_name); logger.error(e.getMessage(),e); } } catch (Exception e) { out.println(showMsg("電話號碼文件導入出現異常!")); delFile(u_name); logger.error(e.getMessage(),e); } } } } private void checkPath(String filepath) throws Exception { File file = new File(filepath); if (!file.exists() || !file.isDirectory()) { file.mkdirs(); } }