下载文件
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub //doPost(request, response); //System.out.println("下载"); 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 = "非会员电话号码模版.xls";//下载文件时显示的文件保存名称 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，并解析）
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;// 设置上传文件最大为1G 1B *1024 = 1*1024 = 1M *1024 = 1G // 上传文件路径 //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(); } // 临时存放目录 String tempPath = filePath + "temp"+File.separator; try { checkPath(tempPath); } catch (Exception e1) { e1.printStackTrace(); } // 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload DiskFileItemFactory dfif = new DiskFileItemFactory(); // 设置上传文件时用于临时存放文件的内存大小,这里是5M.多于的部分将临时存在硬盘 dfif.setSizeThreshold(1024 * 1024 * 5); // 设置存放临时文件的目录 dfif.setRepository(new File(tempPath)); // 用以上工厂实例化上传组件 ServletFileUpload sfu = new ServletFileUpload(dfif); // 设置最大上传尺寸 sfu.setSizeMax(MAX_SIZE); // 从request得到 所有 上传域的列表 List fileList = null; try { fileList = sfu.parseRequest(request); } catch (FileUploadException e) {// 处理文件尺寸过大异常 if (e instanceof SizeLimitExceededException) { //System.out.println("导入文件大小不能超过1M"); out.println(showMsg("导入文件大小不能超过1M!")); return; } logger.error(e.getMessage(),e); } // 没有选择上传文件 if (fileList == null || fileList.size() == 0) { //System.out.println("请选择导入文件"); out.println(showMsg("请选择导入文件")); return; } // 得到所有上传的文件 Iterator fileItr = fileList.iterator(); // 循环处理所有文件 while (fileItr.hasNext()) { FileItem fileItem = null; String path = null; double size = 0; // 得到当前文件 fileItem = (FileItem) fileItr.next(); // 忽略简单form字段而不是上传域的文件域( list = new ArrayList (); for (int j = 1; j < rows; j++) { //从第2行开始 HSSFRow row = sheet.getRow(j); if (row == null) { continue; } int cells = row.getLastCellNum(); // 是获取最后一个不为空的列是第几个 if (cells < 1){ out.println(showMsg("电话号码文件格式不符合要求!")); break; } HSSFCell cell0 = row.getCell(0); //姓名列 HSSFCell cell1 = row.getCell(1); //手机号码列 // 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); // 手机号不为空 且 都是数字号码 if (!"".equals(rmobile) && NumberUtils.isNumber(rmobile)){ mld.setcName(rname); mld.setcMobile(rmobile); list.add(mld); } } // 去除重复 list = removeDuplicateWithOrder(list); if (list != null && !list.isEmpty()) { //System.out.println("开始json"); //若list不为空，则将其转换成JSON对象，并存入jsonArray中 JSONArray jsonArray = JSONArray.fromObject(list); //下面就是把存有查询结果的JSON对象返给页面 //System.out.println(jsonArray); out.println(" parent.rtnList("+jsonArray+");"); } out.println(showMsg("共成功导入" + String.valueOf(list.size())+"个手机号码!")); } out.flush(); out.close(); delFile(u_name); } catch (Exception e) { out.println(showMsg("电话号码文件解析出错!")); delFile(u_name); logger.error(e.getMessage(),e); } } catch (Exception e) { out.println(showMsg("电话号码文件导入出现异常!")); 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(); } }