SpringMVC下载上传Excel文件

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前端框架：Bootstrap，后端框架：SpringMVC、Spring

• 下载、上传的页面如下：
  
• 模版内容如下：
  
• 下载、上传的前端代码如下：
  

<div class="modal" id="batchUpdateDigestModal" role="dialog" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true"></button>
                <h4 class="modal-title">文件批量补充摘要信息</h4>
            </div>
            <div class="modal-body text-center">
                <form action="##" class="form-horizontal form-row-sepe" id="batchUpdateDigestForm">
                    <div class="form-group" style="margin-left: 10px;">
                        <a href="javascript:exportTemplateData();" id="exportTemplate" class="btn btn-sm green">
                            <i class="fa"></i>模板下载 </a> <span>（请下载模版，按照模版格式上传）</span>
                    </div>
                    <hr>
                    <div class="form-group margin-top-10">
                        <div class="col-md-6">
                            <input type="file" name="multipartFile" id="file_id" style="margin-left: 120px;">
                        </div>
                        <div class="col-md-2">
                            <button type="button" onclick="batchUpdateDigest();" class="btn btn-sm blue"
                                        style="height: 30px;">批量补充摘要
                            </button>
                        </div>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn default" data-dismiss="modal">关闭</button>
            </div>
        </div>
    </div>
</div>

js代码：

//下载模版
function exportTemplateData() {
        var form = document.getElementById("batchUpdateDigestForm");
        form.action = "${basePath}/bankFlowJournal/downloadTemplate.do";
        form.submit();
        form.action = "##";
    }

//上传摘要文件，批量补充摘要
function batchUpdateDigest() {
        var file_id = $("#file_id").val();
        if (file_id == null || file_id == "") {
            bootbox.alert("上传文件不能为空！");
            return;
        }
        $.startMaskLayer(); //缓冲图层打开
        $("#batchUpdateDigestForm").ajaxSubmit({
            type: "post",
            dataType: "json",
            clearForm: true,
            resetForm: true,
            url: "${basePath}/bankFlowJournal/batchUpdateDigest.do",
            success: function (data) {
                $.endMaskLayer();//缓冲图层关闭
                $("#batchUpdateDigestModal").modal("hide");
                bootbox.alert(data.resultMsg); //显示返回信息
                $("#go_search").click(); //刷新页面
            }
        });
    }

• 下载文件的JAVA代码：

@RequestMapping("/downloadTemplate")
    public void downloadTemplate(HttpServletRequest request, HttpServletResponse response) {
        try {
            String fileName = "批量补充摘要模板.xlsx";
            OutputStream out = response.getOutputStream();// 取得输出流
            response.reset();// 清空输出流

            //组装模版数据
            List<List<String>> data = new ArrayList<List<String>>();
            List<String> list = new ArrayList<>();
            list.add("xxxxxxxxxxxx");
            list.add("2018-01-01或2018/1/1");
            list.add("101001|xxx");
            data.add(list);

            //生成Excel
            String headers[] = {"流水号", "交易日期", "摘要"};
            ExportExcel<Object> eeu = new ExportExcel<Object>();
            HSSFWorkbook workbook = new HSSFWorkbook();
            eeu.exportExcel(workbook, 0, "摘要模板", headers, data, out);

            //输出到response
            response.setContentType("application/vnd.ms-excel;charset=UTF-8");
            response.setHeader("Content-Disposition","attachment;filename="+ new String((fileName).getBytes(), "iso-8859-1"));
            OutputStream output  = response.getOutputStream();
            workbook.write(output);
            output.flush();
            output.close();

        } catch (Exception e) {
            logger.error("【下载模板出错", e);
            throw new SettleException(RetCode.FAILURE, "下载模板出错");
        }
    }

• 上传文件的JAVA代码：

@RequestMapping("/batchUpdateDigest")
    @ResponseBody
    public Object batchUpdateDigest(HttpServletRequest request, MultipartFile multipartFile) {
        User user = (User) request.getSession().getAttribute(Cons.S_USER);
        logger.info("【账户流水日记账-批量更新摘要信息】操作人={}", user.getLoginName());

        SettleResponse response = new SettleResponse(RetCode.SUCCESS);

        try {
            String filename = multipartFile.getOriginalFilename();
            logger.info("begin to parse file...");
            if (null == filename || "".equals(filename)) {
                throw new SettleException(RetCode.FAILURE, "上传文件不能为空！");
            }
            if (!filename.toUpperCase().endsWith(".XLS")) {
                throw new SettleException(RetCode.FAILURE, "不支持此文件类型，请重新上传！");
            }
            Workbook wb = Workbook.getWorkbook(multipartFile.getInputStream());
            Sheet sheet = wb.getSheet(0);    //获得第一个表单
            int lastRow = sheet.getRows();
            BankDigestUpdateReq digestUpdateReq;
            DateCell dCell=null;
            for (int i = 1; i < lastRow; i++) {

                digestUpdateReq = new BankDigestUpdateReq();
                Cell[] cells = sheet.getRow(i);

                //防止有编辑过的空行被扫描
                if(null == cells || cells.length < 1 || CellType.EMPTY.equals(cells[0].getType())){
                    continue;
                }
                //非空检验
                if (null == cells[0]) {
                    throw new SettleException(RetCode.FAILURE, "流水号不能为空，请检查文件！");
                }
                if (null == cells[1] || StringUtils.isBlank(cells[1].getContents())) {
                    throw new SettleException(RetCode.FAILURE, "交易日期不能为空，请检查文件！");
                }
                if (null == cells[2]) {
                    throw new SettleException(RetCode.FAILURE, "摘要不能为空，请检查文件！");
                }
                //如果是文本格式的日期，即：yyyy-MM-dd
                if(CellType.LABEL.equals(cells[1].getType())){
                    digestUpdateReq.setTradeDate(DateUtil.SDF1().parse(cells[1].getContents()));
                }
                //如果是日期格式的日期，即：yyyy/MM/dd
                else if(CellType.DATE.equals(cells[1].getType())){
                    dCell = (DateCell) cells[1];
                    digestUpdateReq.setTradeDate(dCell.getDate());
                }
                digestUpdateReq.setTradeNo(cells[0].getContents());
                digestUpdateReq.setDigest(cells[2].getContents());
                digestUpdateReq.setOperator(user.getLoginName());

                BaseRes res = journalUpdateFacade.updateDigestInfo(digestUpdateReq);
                if (!RetCode.SUCCESS.getCode().equals(res.getRetCode())) {
                    throw new SettleException(RetCode.FAILURE, res.getRetInfo());
                }
            }
        } catch (SettleException se) {
            logger.info("解析摘要补充文件业务异常，异常原因：{}", se.getMessage());
            response.setResult(RetCode.FAILURE, se.getMessage());
        } catch (Exception ex) {
            logger.error("读取excel出错", ex);
            response.setResult(RetCode.FAILURE, "读取excel出错！");
        }
        return response;
    }

• 涉及到的pom配置：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>1.5.9.RELEASE</version>            
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.1.7.RELEASE</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
</dependency>
<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.9</version>
</dependency>
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.0.1</version>
</dependency>
<dependency>
    <groupId>net.sourceforge.jexcelapi</groupId>
    <artifactId>jxl</artifactId>
    <version>2.6.12</version>
</dependency>