jdbc:mysql://localhost:3306/mytest?createDatabaseIfNotExist=true&allowMultiQueries=true&autoReconnect=true&useUnicode=true&zeroDateTimeBehavior=convertToNull&characterEncoding=UTF-8

jdbc:mysql://localhost:3306/mytest?characterEncoding=UTF-8&ampcreateDatabaseIfNotExist=true&allowMultiQueries=true&autoReconnect=true&useUnicode=true&zeroDateTimeBehavior=convertToNull

        MultipartHttpServletRequest mreq = (MultipartHttpServletRequest) req;MultipartFile file = mreq.getFile("file");

private synchronized Map<String, String> getReqData(HttpServletRequest req, int type) throws Exception {req.setCharacterEncoding("utf-8");boolean isMultipart = ServletFileUpload.isMultipartContent(req);Map<String, String> reqMap = new HashMap<String, String>(9);String epFileName = null;String filePath = null;if (isMultipart) {DiskFileItemFactory factory = new DiskFileItemFactory();ServletFileUpload upload = new ServletFileUpload(factory);try {List<FileItem> items = upload.parseRequest(req);// 循环items获取上传文件后缀名for (FileItem item : items) {if (!item.isFormField() && !StringUtil.isNullOrEmpty(item.getName())) {epFileName = item.getName();}}for (FileItem item : items) {if (item.isFormField()) {String fieldName = item.getFieldName();String value = item.getString("UTF-8");reqMap.put(fieldName, value);} else {if (!StringUtil.isNullOrEmpty(epFileName)) {// String path =// req.getSession().getServletContext().getRealPath("\\upload");//// 服务器路径String path = "E:uploadPic"; // 本地路径// String path = "/EasybuySystem2/WebRoot/upload"// \\ 代表创建子文件夹filePath =path + "\\" + DateUtil.format(new Date(), "yyyyMMdd") + "\\"+ epFileName.replace(".", "（" + DateUtil.format(new Date(), "HHmmssSSS") + "）.");File newFile = new File(filePath);String fileName = item.getName();if (!StringUtil.isNullOrNot(fileName)) {item.write(newFile);}}}}} catch (FileUploadException e) {// 失败，删除本地上传的文件this.delLocalFile(filePath);filePath = null;log.debug("为上传图片新建本地名称，getFilePath方法发生异常，uri=" + req.getRequestURL());}}log.debug("为上传图片新建本地名称， 文件路径：filePath=" + filePath);log.debug("为上传图片新建本地名称， 数据reqMap=" + reqMap);reqMap.put("epFileName", epFileName);reqMap.put("epFilePath", filePath);return reqMap;}

    private void doAdd(HttpServletRequest req, HttpServletResponse resp) throws Exception {// 途径一：使用DiskFileItemFactory，https://blog.csdn.net/qq_31463999/article/details/79197375// 途径二：使用multipartFile强转requestMap<String, String> reqMap = getReqData(req, 0);String epName = reqMap.get("epName");String epDesc = reqMap.get("epDesc");String epPriceStr = reqMap.get("epPrice");String epStockStr = reqMap.get("epStock");String epcParentId = reqMap.get("epcParentId");String epQrcode = reqMap.get("epQrcode");String epFileName = reqMap.get("epFileName");String filePath = reqMap.get("epFilePath");// qrcode从toAddJSP跳转时随机生成，条形码以io流读入数据库；字段（qrcode）// 获取上传图片信息，页面可控制大小范围// 方式一，存入数据库（采用）--字段（picture）；方式二，存到本地（blob字段使用遇到问题）if (StringUtil.isAnyNullOrEmpty(epName, epDesc, epPriceStr, epcParentId, epFileName)) {// 参数错误
            req.setAttribute(ConstantUtil.MESSAGE_ERROR, ConstantUtil.ILLEGAL_PARAM);if (!StringUtil.isNullOrEmpty(filePath)) {this.delLocalFile(filePath);}} else {double epPrice = StringUtil.toDouble(epPriceStr, 0.00);int epStock = StringUtil.toInt(epStockStr, 0);if (!StringUtil.isNullOrEmpty(filePath)) {Product product =new Product(IdUtil.getSeqNo(), epName, epDesc, epPrice, epStock, epcParentId, epQrcode, epFileName);product.setEpfilePath(filePath);if (ps.add(product)) {req.setAttribute(ConstantUtil.MESSAGE_ERROR, ConstantUtil.SUCCESS_ADD);} else {this.delLocalFile(filePath);req.setAttribute(ConstantUtil.MESSAGE_ERROR, ConstantUtil.FAIL_ADD);}}}req.setAttribute(ConstantUtil.URI, DEFAULT_URI);req.getRequestDispatcher("msg-result.jsp").forward(req, resp);}