实现功能是，用户可以直接导入对应数据，或者用户下载模板，填写数据，导入模板数据。easyui实现
前台页面
{
text : '日清导入',
iconCls : 'icon-print',
handler : function(){
$('#import').dialog('open');
}
}
<div id = "import" title="员工信息导入" modal=true draggable=true align="center" class="easyui-dialog" closed=true style="width: 400px">
<form id="importForm" method="post" enctype="multipart/form-data">
<table id="importTable" align="center">
<tr>
<td align="center" colspan="2">
上传：<input id = "myFile" name="myFile" type="file"></input>
</td> </tr> <tr>
<td align ="center" colspan="2"><a id="download" href="<%=basePath %>import_template/template-dayrecruit.xls" class="easyui-linkbutton" >模板下载</a>
<a id="upload" class="easyui-linkbutton">上传</a>
<a id="importCancel" class="easyui-linkbutton">取消</a> </td>
</tr>
</table>
</form>
</div>
以上代码加颜色的是特别注意的点。上传文件一定加这些声明，否则不可实现。点击模板下载可以直接在我们根路径下找到模板，并下载。
具体的后台代码是：
@RequestMapping(value = "/imp", method = RequestMethod.POST, produces = "text/html;charset=UTF-8")
public @ResponseBody String imp(@RequestParam MultipartFile myFile,//这里会直接以流文件形式接收上传数据
HttpServletRequest request, HttpSession session) throws Exception { Account account = this.getStaticAccount();
if (myFile == null || myFile.getSize() == 0) {
return "未选择任何文件，请选择文件后上传！";
}
String fileType = myFile.getOriginalFilename().substring(
myFile.getOriginalFilename().lastIndexOf("."));
if (!fileType.equals(".xls") && !fileType.equals(".xlsx")) {
return "文件格式错误，请上传.xls或.xlsx格式文件！";
}
//String path = CommonsMethod.getProjectPath() ;
String path=request.getSession()
.getServletContext().getRealPath("/")
+ "/importReserveExcel/";
String fileattr = CommonsMethod.getNowCorrect2Millisecond()
+ myFile.getOriginalFilename().substring(
myFile.getOriginalFilename().lastIndexOf("."));
final File targetFile = new File(path, fileattr);
if (!targetFile.exists()) {
targetFile.mkdirs();
}
try {
myFile.transferTo(targetFile);
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} ArrayList<Object> dataList = new ArrayList<Object>();
try {
dataList = dayRecruitService.readExcel(
targetFile.getAbsolutePath(), 4);
} catch (Exception e) {
return e.getMessage();
}
try {
String failImport = dayRecruitService.importDayrecruit(
dataList, account);
} catch (RuntimeException e) {
return e.getMessage();
} catch (Exception e) {
return "请仔细核对上传格式（参考备注）";
}
return "上传成功";
} private static final String[] headers = new String[] {"日清日期","备注","面试人数","入职人数","招聘企业"};
readExcel代码：把数据先读到一个dayrecruit模板中 原因是当前读的数据不是直接向数据库中存的数据。
public ArrayList<Object> readExcel(String absolutePath, int i)throws Exception {
// TODO Auto-generated method stub
ExcelOperations oper = new ExcelOperations();
ArrayList<Object> list = oper.readExcel(absolutePath,
Template_DayRecruit.class, columnHeaders,i );
return list;
}
public static final String[] columnHeaders = { "date",
"remarks", "viewerNu",
"entryNu", "customerName"};
正式读取excle数据代码为
public ArrayList<Object> readExcel(String filePath, Class entity,
String[] columnHeads, int noReadSize) throws Exception {
ArrayList<Method> list = new ArrayList<Method>();
ArrayList<Object> objs = new ArrayList<Object>(); try {
for (int i = 0; i < columnHeads.length; i++) {
char f = columnHeads[i].charAt(0);
if (!Character.isUpperCase(f)) {
columnHeads[i] = String.valueOf(Character.toUpperCase(f))
+ columnHeads[i].substring(1);
}
Method methodGet = entity.getMethod("get" + columnHeads[i]);
Method methodSet = entity.getMethod("set" + columnHeads[i], methodGet.getReturnType());
list.add(methodSet);
}
InputStream inputstream = new FileInputStream(filePath);
Workbook wb = WorkbookFactory.create(inputstream);
Sheet sheet1 = wb.getSheetAt(0);
for (int i = 1; i <= sheet1.getLastRowNum() - noReadSize; i++) {
try { Object obj = entity.newInstance();
Cell cell = null;
for (int k = 0; k < list.size(); k ++) {
cell = sheet1.getRow(i).getCell(k);
if(cell.getCellType() == 0){
//判断是否为日期
if(HSSFDateUtil.isCellDateFormatted(cell)){
SimpleDateFormat sdf = null;
if (cell.getCellStyle().getDataFormat() == HSSFDataFormat
.getBuiltinFormat("h:mm")) {
sdf = new SimpleDateFormat("HH:mm");
} else {// 日期
sdf = new SimpleDateFormat("yyyy-MM-dd");
}
Date date = cell.getDateCellValue();
cell.setCellValue(sdf.format(date)); }else{
double value = cell.getNumericCellValue();
CellStyle style = cell.getCellStyle();
DecimalFormat format = new DecimalFormat();
String temp = style.getDataFormatString();
// 单元格设置成常规
if (temp.equals("General")) {
format.applyPattern("#");
}
cell.setCellValue(format.format(value)); }
}
list.get(k).invoke(obj, cell.toString());
}
objs.add(obj);
} catch (Exception e) {
e.printStackTrace();
throw new Exception("Excel 文件第" + i + "行格式错误");
}
}
} catch (Exception e) {
e.printStackTrace();
throw e;
}
return objs;
}
然后调用import方法，里面会验证需要验证的数据。如果有一条没有通过验证那么所有的数据将会回滚操作。这主要牵扯到了事务管理。
public String importDayrecruit(List<Object> dataList, Account user)
throws Exception { String failImport = "";
if (dataList != null && dataList.size() > 0) { //根据公司user找到对应公司 根据公司找到对应的 招聘企业 根据招聘企业
Organization org = dayRecruitDAO.findOrganizationById(user.getOrganization().getId()); List<EnterpriseCustomer> customers = dayRecruitDAO.findAllEnterpriseCustomerByOrg(user.getOrganization().getId()); for (int i = 0; i < dataList.size(); i++) {
DayRecruit dayRec = new DayRecruit();
Template_DayRecruit t_dayRecruit = new Template_DayRecruit();
t_dayRecruit = (Template_DayRecruit) dataList.get(i);
dayRec.setWriter(user.getLoginName());
dayRec.setDatatime(new Date());
dayRec.setRemarks(t_dayRecruit.getRemarks().trim());
//dayRec.
//验证招聘日期
if(isValidDate(t_dayRecruit.getDate().trim()) && StringUtils.isNotBlank(t_dayRecruit.getDate().trim())){
dayRec.setDate(t_dayRecruit.getDate().toString()); }else throw new RuntimeException("第" + (i + 2)
+ "行填写招聘日清日期有误，请重新确定");
//验证填写人
/* if(StringUtils.isNotBlank(dayRec.getWriter()) && dayRec.getWriter().equals(user.getUserName())){
dayRec.setWriter(dayRec.getWriter().trim());
}
else{
throw new RuntimeException("第" + (i + 2)
+ "行填写输入人有误，请填写您的登录账号，请重新确定");
}*/
//验证面试人数
if(isNumeric(t_dayRecruit.getViewerNu().trim()) && StringUtils.isNotBlank(t_dayRecruit.getViewerNu().trim())){
dayRec.setViewerNu(t_dayRecruit.getViewerNu().trim());
}
else throw new RuntimeException("第" + (i + 2)
+ "行填写面试人数有误，请重新确定");
//验证入职人数
if(isNumeric(t_dayRecruit.getEntryNu().trim()) && StringUtils.isNotBlank(t_dayRecruit.getEntryNu().trim())){ int re = Double.valueOf(t_dayRecruit.getEntryNu().trim()).compareTo(Double.valueOf(t_dayRecruit.getViewerNu().trim()));
if(re <1){
dayRec.setEntryNu(t_dayRecruit.getEntryNu().trim()); }
else {
throw new RuntimeException("第" + (i + 2)
+ "行入职人数大于面试人数，请重新确定");
}
}
else throw new RuntimeException("第" + (i + 2)
+ "行填写入职人数有误，请重新确定"); //验证招聘企业 从模板中获取招聘企业的名字 查询出 此公司所有的招聘企业 对应的话 取 招聘企业这个对象赋值给dayR // 验证所属公司
if(StringUtils.isNoneBlank(t_dayRecruit.getCustomerName().trim())){
boolean isOK = false;
if(customers != null && customers.size()>0){
for(int j =0;j<customers.size();j++){
if(customers.get(j).getEnterpriseName().equals(t_dayRecruit.getCustomerName().trim())){ dayRec.setCustomer(customers.get(j));
isOK = true;
break;//跳出当前循环
} } }
if (!isOK) {
throw new RuntimeException("第" + (i + 2)
+ "行招聘企业输入有误，请重新确定");
}
} dayRecruitDAO.add(dayRec);
}
} else {
throw new RuntimeException("导入数据为空");
}
return failImport;
}
这样数据就插入到对应数据库。完成导入操作。