Java实现Excel批量导入数据

<dependency>
 <groupId>net.sourceforge.jexcelapi</groupId>
 <artifactId>jxl</artifactId>
 <version>2.6.10</version>
</dependency>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<div style="width: 600px;">
 <form class="form" method="post" data-submit="ajax" enctype="multipart/form-data" 
 action="/hpersonnel/import.do">
 //<input type="hidden" name="id" value="<%= request.getParameter("id") %>" />  
 <div class="form-group">  
  <label class="form-label w100"> </label>
  <label class="form-label ">1、下载模板。
  <a class="btn btn-default submit-form" href="/template/personnel.xls" rel="external nofollow" >下载</a>
  </label>
 </div>
 <div class="form-group">
  <label class="form-label w100"> </label>
  <label class="form-label ">2、按照模板表头填写内容，请勿修改文件格式</label>
 </div>
 <div class="form-group">
  <label class="form-label w100"> </label>
  <label class="form-label ">3、<input type="file" name="file" /></label>
 </div>  
 <div class="btns dialog-button">
  <button class="dialog-btn-yes" type="submit">提交</button>
  <button class="dialog-btn-no" type="button" onclick="app.closeDialog(this)">取消</button>
 </div> 
 </form>
</div>

@ResponseBody
@RequestMapping(value = "import")
public Object import(MultipartFile file) { 
 
 if (file.isEmpty()) {
 return ResultObject.failure("文件为空");
 }
 ResultObject result = new ResultObject();
 //记录集合
 List<Map> mapList = new ArrayList<Map>();
 //校验结果
 boolean reqFlag = true;
 //回复消息
 String reqMsg = "";
 //报错消息数
 Integer error = 0;
 //解析文件
 try {
 //转换成输入流
 InputStream is = file.getInputStream();
 //得到excel
 Workbook workbook = Workbook.getWorkbook(is);
 //得到sheet
 Sheet sheet = workbook.getSheet(0);
 //得到列数
 int colsNum = sheet.getColumns();
 //得到行数
 int rowsNum = sheet.getRows();
 if (rowsNum == 1) return ResultObject.failure("没有数据");
 //单元格
 Cell cell;
 //数据校验
 for (int i = 1; i < rowsNum; i++) {//第一行是标题,所以i从1开始
  Map<Integer, Object> map = new HashMap<Integer, Object>();
  for (int j = 0; j < colsNum; j++) {
  cell = sheet.getCell(j, i);//第一个参数是列.第二个参数是行
  if (j < 4 && "".equals(cell.getContents())) { //----这里判断必填项（前4列）
   reqFlag = false;
   reqMsg += "第" + (i + 1) + "行错误，错误信息：" + "必填项缺漏";
   reqMsg += "<br>";
   error++;
   break;
  }
  String cellString = cell.getContents();
  cellString = cellString.trim();
  switch (j) {
   case 1: {
   //进行校验处理，例如手机号
    if (!StringUtil.isMobileNo(cellString)) {
    reqFlag = false;
    reqMsg += "第" + (i + 1) + "行错误，错误信息：" + "联系电话有误";
    reqMsg += "<br>";
    error++;
   } else {
    map.put(j, cellString);
   }
   break;
   }
   case 2: { ### break; }
   case 3: { ### break; }
   //无需校验，归入default
   default: {
   map.put(j, cell.getContents());
   }
  }
  }
  if (reqFlag) {//校验通过
  mapList.add(map);
  }
 }
 } catch (IOException e) {
 e.printStackTrace();
 } catch (BiffException e) {
 e.printStackTrace();
 }
 //入库
 try {
 if (mapList.size() > 0 && reqFlag) {
  //此处try,catch应优化为事务处理maplist实现全记录成功或失败
  result.setSuccess("提交成功");
 } else {  
  if (error > 10) {//设置要显示的错误数
  int index = StringUtil.getIndex(reqMsg, 10, "<br>");
  reqMsg = reqMsg.substring(0, index + 4);
  reqMsg += "未显示错误数：" + (error - 10) + "条";
  reqMsg += "<br>";
  }
  result.setFailure(reqMsg);
 }
 } catch (Exception e) {
 result.setFailure("入库错误，请联系管理员！");
 e.printStackTrace();
 }
 return result;
}