java实现导入excel功能

实现功能：

　　1、Excel模板下载

　　2、导入excel

一、jsp效果和代码

 <form id="uploadForm" target="frameFile" class="bs-docs-example form-horizontal" method="post" action="<%=path %>/webCenter.do" enctype="multipart/form-data">
                 <input type="hidden" id="conId" name="conId" value="<%=conId%>">
                 <input type="hidden" id="code" name="code" value="<%=code%>">
                 <input type="hidden" name="method" value="insertUserInfo">
                 <table cellpadding="0" cellspacing="0" border="0" style="width:600px;margin:20px auto;text-algin:left;">
                 <tr><td colspan="4"><input id="dyId" type="hidden"/></td></tr>
                 <tr><td colspan="3"><a href="/center/file/userInfoModel.xlsx" id="downloadModel" name="downloadModel" style="margin-left:7px;"><u>点击下载人员模板</u></a></td></tr>
                 <tr><td colspan="4"><br/></td></tr>
                 <tr><td colspan="3"><input id="files" name="files" type="file" style="width:200px;"/></td></tr><!-- background:url('/center/images/uploadImg.png') no-repeat 0px 10px; -->
                 <tr><td colspan="4"><br/></td></tr>
                 <tr>
                     <td colspan="4" style="text-align: center;">
                     <hr style="width:720px;border-width: 0.3px;margin-left:-10px;">
                         <button id="tiJiao" type="button" class="czbtn" style="width:100px;font-size: 16px;">导入</button>
                     </td>
                 </tr>
                 </table>
             </form>

二、js代码

 $("#tiJiao").click(function(){
             if($("#files").val() == ""){
                 alert("请选择要上传的文件");
             }else{
                 CommonPerson.Base.LoadingPic.FullScreenShow();
                 $("#tkDiv").hide();
                  $("#tk1").hide();
                 $("#uploadForm").submit();
             }
         })

三、action处理

     /**
      * 人员信息导入
      * @param conId
      * @param code
      * @param request
      * @param response
      */
     @RequestMapping(params="method=insertUserInfo",method=RequestMethod.POST)
     public void insertUserInfo(Integer conId,String code,HttpServletRequest request,HttpServletResponse response){
         try {
             String msg = "";
             Integer state = 0;
             String fileUrl = "/files/excel/";
             HttpSession session  = this.getSession(request);
             Adminuser adminUser = session.getAttribute("centerAdminUser") == null?null:(Adminuser) session.getAttribute("centerAdminUser");
             if(adminUser == null){
                 try {
                     response.sendRedirect(request.getContextPath()+"/center/index.jsp");
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
             }else{
                 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
                 MultipartFile multipartFile = multipartRequest.getFile("files");
                 InputStream is = multipartFile.getInputStream();
                 if(is!=null){
                     Workbook wb = WorkbookFactory.create(is);
                     CellStyle style = wb.createCellStyle();
                     style.setFillForegroundColor(IndexedColors.RED.getIndex());
                     style.setFillPattern(CellStyle.SOLID_FOREGROUND);
                     List<UserInfo> userInfoList = new ArrayList<UserInfo>();
                     int rowCount = 0;
                     boolean temp = true;
                     try {
                         Sheet st = wb.getSheetAt(0);
                         int rowNum = st.getLastRowNum(); //获取Excel最后一行索引，从零开始，所以获取到的是表中最后一行行数减一
                         int colNum = st.getRow(0).getLastCellNum();//获取Excel列数
                         for(int r=1;r<=rowNum;r++){//读取每一行，第一行为标题，从第二行开始
                             rowCount = r;
                             Row row = st.getRow(r);
                             UserInfo userInfo = new UserInfo();
                             for(int l=0;l<colNum;l++){//读取每一行的每一列
                                 Cell cell = row.getCell(l);
                                 if(cell != null){
                                     cell.setCellType(Cell.CELL_TYPE_STRING);
                                 }
                                 if(l != 8 && l != 9){//第9列和第10列(列数是从0开始遍历)分别是身份证号码和工作背景，这两项为选填，其余项全为必填
                                     if(cell != null && !"".equals(cell.toString().trim())){
                                         System.out.print(cell + "\t");
                                     }else{
                                         System.out.print("该项不能为空" + "\t");
                                         temp = false;
                                         //给Excel中为空格的必填项添加背景色
                                         Cell newCell = row.createCell(l);
                                         newCell.setCellStyle(style);
                                     }
                                 }else{//身份证号和工作背景
                                     System.out.print(cell + "\t");
                                 }
                                 if(temp){
                                     switch (l) {
                                         case 0: userInfo.setEmail(cell.getStringCellValue()); break;
                                         case 1: userInfo.setMobilePhone(cell.getStringCellValue()); break;
                                         case 2: userInfo.setPassword(cell.getStringCellValue()); break;
                                         case 3: userInfo.setTrueName(cell.getStringCellValue()); break;
                                         case 4: userInfo.setXingPingyin(cell.getStringCellValue()); break;
                                         case 5: userInfo.setMingPingyin(cell.getStringCellValue()); break;
                                         case 6: userInfo.setSex(cell.getStringCellValue()); break;
                                         case 7: userInfo.setBirthday(cell.getStringCellValue()); break;
                                         case 8: userInfo.setIdCard(cell.getStringCellValue()); break;
                                         case 9: userInfo.setBeijin(cell.getStringCellValue()); break;
                                         case 10: userInfo.setXueli(cell.getStringCellValue()); break;
                                         case 11:
                                             userInfo.setProvinceName(cell.getStringCellValue());
                                             Hospital provinceId = hospitalService.getHospitalByProvince(cell.getStringCellValue());
                                             if(provinceId != null){
                                                 userInfo.setProvince(provinceId.getHospitalId()+"");
                                             }
                                             break;
                                         case 12:
                                             userInfo.setCityName(cell.getStringCellValue());
                                             Hospital cityId = hospitalService.getHospitalByCity(cell.getStringCellValue());
                                             if(cityId != null){
                                                 userInfo.setCity(cityId.getHospitalId()+"");
                                             }
                                             break;
                                         case 13:
                                             userInfo.setDanwei(cell.getStringCellValue());
                                             break;
                                         case 14: userInfo.setKs(cell.getStringCellValue()); break;
                                         case 15: userInfo.setZhicheng(cell.getStringCellValue()); break;
                                         case 16: userInfo.setZhiwei(cell.getStringCellValue()); break;
                                         case 17: userInfo.setAddress(cell.getStringCellValue()); break;
                                         case 18: userInfo.setZip(cell.getStringCellValue()); break;
                                         case 19: userInfo.setTelphone(cell.getStringCellValue()); break;
                                     }
                                     userInfo.setConferencesId(conId);
                                     userInfo.setFromWhere(code);
                                     userInfo.setCreateTime(new Date());
                                 }
                             }
                             System.out.println();
                             userInfoList.add(userInfo);
                         }
                         if(temp){//Excel完全没有问题
                             webService.saveOrUpdateAll(userInfoList);
                             state = 1;
                             msg = "导入成功";
                         }else{//Excel存在必填项为空的情况
                             state = 2;
                             msg = "Excel数据格式有问题，请下载表格，并将其中标红色的部分填写完整";
                             String filePath = request.getSession().getServletContext().getRealPath("files/excel");
                             String fileName = DateTime.getDateString(new Date(), "yyyy_MM_dd")+String.valueOf(System.currentTimeMillis()/1000)+".xlsx";
                             OutputStream out = new FileOutputStream(new File(filePath + "/" + fileName));
                             wb.write(out);
                             out.close();
                             fileUrl = fileUrl + fileName;
                         }
                     }catch (Exception e) {
                         System.out.println("第"+rowCount+"行出错");
                         msg = "第"+rowCount+"行出错";
                         e.printStackTrace();
                     }
                 }
                 is.close();
                 JSONObject result = new JSONObject();
                 result.accumulate("state",state);
                 result.accumulate("remark",msg);
                 result.accumulate("fileUrl",fileUrl);
                 String urlString = "<script type='text/javascript'>window.parent.insertResult('"+result.toString()+"')</script>";
                 PrintWriter out = response.getWriter();
                 response.setCharacterEncoding("utf-8");
                 response.setContentType("text/html;charset=UTF-8");
                 out.write(urlString);
                 out.flush();
                 out.close();
             }
         } catch (Exception e) {
             e.printStackTrace();
             try {
                 JSONObject result = new JSONObject();
                 result.accumulate("state",0);
                 result.accumulate("remark","excel数据格式有问题，导入失败");
                 String urlString ="<script type='text/javascript'>window.parent.insertResult('"+result.toString()+"')</script>";
                 PrintWriter out = response.getWriter();
                 response.setCharacterEncoding("utf-8");
                 response.setContentType("text/html;charset=UTF-8");
                 out.write(urlString);
                 out.flush();
                 out.close();
             } catch (Exception e2) {
                 e2.printStackTrace();
             }
         }
     }