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 >
 <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;
}