java poi导入Excel（个人代码）

案例使用的框架：jsp+spring+mybaties

<form id="importForm" name="importForm" method="post" target="win" action="importExcel.ht" enctype="multipart/form-data">

<div class="row">

<table id="tableid" class="table-detail" cellpadding="0" cellspacing="0" border="0">

<tr>

<th width="22%">选择文件：</th>

<td width="78%"><input type="file" size="40" name="xmlFile" id="xmlFile"/></td>

</tr>

</table>

</div>

<input type="hidden" name="rq" value="${rq}">

</form>

后台代码

@RequestMapping("importExcel")

@Action(description="导入Excel弹窗")

public void importExcel(MultipartHttpServletRequest request,HttpServletResponse response) throws Exception

{

String rq=request.getParameter("rq");

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

MultipartFile fileLoad = request.getFile("xmlFile");

ResultMessage resultMessage = null;

try {

String fileType = fileLoad.getOriginalFilename().substring(fileLoad.getOriginalFilename().lastIndexOf(".") + 1, fileLoad.getOriginalFilename().length());

Workbook wb = null;

if (fileType.equals("xls")) {

wb = new HSSFWorkbook(fileLoad.getInputStream());

} else if (fileType.equals("xlsx")) {

wb = new XSSFWorkbook(fileLoad.getInputStream());

} else {

throw new Exception("读取的不是excel文件");

}

//读取了模板内所有sheet内容

HSSFSheet sheet = (HSSFSheet) wb.getSheetAt(0);

HSSFCell cell0 = null;

HSSFCell cell1 = null;

Map<String, String> map = new HashMap<String, String>();

//读取excel，处理自己的业务

StringBuffer buf= new StringBuffer();

for(int i=2;i<=97;i++){

cell0 = sheet.getRow(i).getCell(0);

cell1 = sheet.getRow(i).getCell(1);

String key = cell0.getStringCellValue().replace(":", "");

String val = cell1.getStringCellValue();

if(key.startsWith("0")){

key = key.substring(1,key.length());

}

key = "v"+key;

map.put(key, val);

}

String value = map.toString().replace("=", ":");

LoadDate ld = new LoadDate();

ld.setValue(value);

ld.setRq(sdf.parse(rq));

ld.setSbzt("未上报");

for(int i=98;i<=102;i++){

cell0 = sheet.getRow(i).getCell(0);

cell1 = sheet.getRow(i).getCell(1);

String key = cell0.getStringCellValue();

String val = cell1.getStringCellValue();

if("高峰电量".equals(key)){

ld.setYcgfdl(Long.parseLong(val));

}else if("全天电量".equals(key)){

ld.setYcqdl(Long.parseLong(val));

}else if("错峰电力".equals(key)){

ld.setYccfdLi(Long.parseLong(val));

}else if("错峰电量".equals(key)){

ld.setYccfdLl(Long.parseLong(val));

}else if("低谷电量".equals(key)){

ld.setYcdgdl(Long.parseLong(val));

}

}

Long id = UniqueIdUtil.genId();

ld.setId(id);

ld.setSbzt("未上报");

loadDateService.add(ld);

String result="导入数据成功";

if(result.contains("成功")){

resultMessage = new ResultMessage(ResultMessage.Success, "导入成功!");

}else{

resultMessage = new ResultMessage(ResultMessage.Fail, result);

}

writeResultMessage(response.getWriter(), resultMessage);

} catch (Exception ex) {

ex.printStackTrace();

String str = MessageUtil.getMessage();

ex.getLocalizedMessage();

if (StringUtil.isNotEmpty(str)) {

resultMessage = new ResultMessage(ResultMessage.Fail,"导入失败请检查导入的Excel是否正确:" + str);

response.getWriter().print(resultMessage);

} else {

String message = ExceptionUtil.getExceptionMessage(ex);

resultMessage = new ResultMessage(ResultMessage.Fail, "导入失败请检查导入的Excel是否正确");

response.getWriter().print(resultMessage);

}

}

}

个人经验总结

导入报版本不匹配问题

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

MultipartFile fileLoad = request.getFile("xmlFile");

try {

String fileType = fileLoad.getOriginalFilename().substring(

fileLoad.getOriginalFilename().lastIndexOf(".") + 1,

fileLoad.getOriginalFilename().length());

Workbook wb = null;

if (fileType.equals("xls")) {

try {

//07+版本

wb = new HSSFWorkbook(fileLoad.getInputStream());

} catch (Exception e) {

//03版

wb = new XSSFWorkbook(fileLoad.getInputStream());

}

} else if (fileType.equals("xlsx")) {

wb = new XSSFWorkbook(fileLoad.getInputStream());

} else {

throw new Exception("读取的不是excel文件");

}