java版poi+excel导入实例1

目标：

导入jar包：

代码实例：

<form method="post" enctype="multipart/form-data" action="${ctxa}/product/productCategory/saveExcel.do">
<input id="file" type="file"/>
<button type="submit" class="btn btn-info"></button>
</form>

@RequestMapping(value = "saveExcel")
public String saveExcel(@RequestParam(value = "file", required = false) MultipartFile file,
HttpServletRequest request, RedirectAttributes redirectAttributes) {
//获取参数
String purchaesId = request.getParameter("id");
String memId = request.getParameter("memId");
String traderId = request.getParameter("traderId");

//获取上传文件名
String name = file.getOriginalFilename();

//获取文件后缀名
String ext = "";
int index = name.lastIndexOf(".");
if (index != -1) {
ext = name.substring(index);
}

//判断后缀名是否满足要求
if (!(".xls".equalsIgnoreCase(ext) || ".xlsx".equalsIgnoreCase(ext))) {
addMessage(redirectAttributes, "文件格式不符合");
return "/error";
}

//读取文件大小
byte[] data = null;
try {
data = file.getBytes();
} catch (IOException e1) {
logger.error("excel-读取失败", e1);
}

//判断文件大小是否满足要求
if (data == null || data.length > 20971520 || data.length == 0) {
addMessage(redirectAttributes, "文件大小不符合");
return "/error";
}

//加密上传文件名
FileStorage lf = FileStorageFcatory.get();
String fileName = lf.fileName(ext);

//写入存储服务器
try {
lf.write2(data, fileName);
} catch (IOException e) {
logger.error("后台-采购单excel-写入失败", e);
}

//poi解析excel
InputStream inputStream = null;
try {
inputStream = lf.openInputStream(fileName);
// 判断是不是03版本的excel
boolean is03Excel = name.matches("^.+\\.(?i)(xls)$");
// 读取工作薄
Workbook workbook = is03Excel ? new HSSFWorkbook(inputStream) : new XSSFWorkbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
if (sheet.getPhysicalNumberOfRows() > 1) {
List<PurchaseOrderItem> poiList = new ArrayList<>();
//按照行进行循环，读取当前行的列
for (int k = 1; k < sheet.getPhysicalNumberOfRows(); k++) {
// 读取单元格
Row row = sheet.getRow(k);
PurchaseOrderItem purchaseOrderItem = new PurchaseOrderItem();
purchaseOrderItem.setPurchaseOrderId(purchaesOrder.getId());
Cell cell1 = row.getCell(0);//第一列
if (!(cell1 == null || "".equals(cell1))) {
cell1.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setBrand(cell1.getStringCellValue());
}
Cell cell2 = row.getCell(1);//第二列
if (!(cell2 == null || "".equals(cell2))) {
cell2.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setName(cell2.getStringCellValue());
}
Cell cell3 = row.getCell(2);//第三列
if (!(cell3 == null || "".equals(cell3))) {
cell3.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setModel(cell3.getStringCellValue());
}
Cell cell4 = row.getCell(3);//第四列
if (!(cell4 == null || "".equals(cell4))) {
cell4.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setEncapsulation(cell4.getStringCellValue());
}
Cell cell5 = row.getCell(4);//第五列
if (!(cell5 == null || "".equals(cell5))) {
cell5.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setBak2(cell5.getStringCellValue());
}
Cell cell6 = row.getCell(5);//第六列
if (!(cell6 == null || "".equals(cell6))) {
cell6.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setBak5(cell6.getStringCellValue());
}
Cell cell7 = row.getCell(6);//第七列
if (!(cell7 == null || "".equals(cell7))) {
cell7.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setAmount(cell7.getStringCellValue());
}
Cell cell8 = row.getCell(7);//第八列
if (!(cell8 == null || "".equals(cell8))) {
cell8.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setBak3(cell8.getStringCellValue());
}
Cell cell9 = row.getCell(8);//第九列
if (!(cell9 == null || "".equals(cell9))) {
cell9.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setCycle(cell9.getStringCellValue());
}
Cell cell10 = row.getCell(9);//第十列
if (!(cell10 == null || "".equals(cell10))) {
cell10.setCellType(Cell.CELL_TYPE_STRING);
purchaseOrderItem.setPriceRequirement(cell10.getStringCellValue());
}
purchaseOrderItem.setExcelId(productExcel.getId());
purchaseOrderItem.setPurchaseOrderId(purchaesOrder.getId());
purchaseOrderItem.setMemId(memId);
purchaseOrderItem.setRecommend("0");
purchaseOrderItem.setStatus("1");
purchaseOrderItem.setBak4("2");
purchaseOrderItem.setTraderId(traderId);
// 如果一行数据都为空，不插入
if ((cell1.getStringCellValue().trim() == null || "".equals(cell1.getStringCellValue().trim()))
&& (cell2.getStringCellValue().trim() == null || "".equals(cell2.getStringCellValue().trim()))
&& (cell3.getStringCellValue().trim() == null || "".equals(cell3.getStringCellValue().trim()))
&& (cell4.getStringCellValue().trim() == null || "".equals(cell4.getStringCellValue().trim()))
&& (cell5.getStringCellValue().trim() == null || "".equals(cell5.getStringCellValue().trim()))
&& (cell6.getStringCellValue().trim() == null || "".equals(cell6.getStringCellValue().trim()))
&& (cell7.getStringCellValue().trim() == null || "".equals(cell7.getStringCellValue().trim()))
&& (cell8.getStringCellValue().trim() == null || "".equals(cell8.getStringCellValue().trim()))
&& (cell9.getStringCellValue().trim() == null || "".equals(cell9.getStringCellValue().trim()))) {

} else {
poiList.add(purchaseOrderItem);
}

}
// 分批插入，每批100条
List<PurchaseOrderItem> poiList_part = new ArrayList<PurchaseOrderItem>();
for (int i = 0; i < poiList.size(); i++) {
poiList_part.add(poiList.get(i));
if (i > 0 && i % 100 == 0) {
int a = purchaseOrderItemService.insertSelectivePurchase(poi);
System.out.println(a);
poiList_part = new ArrayList<PurchaseOrderItem>();
}
}
// 最后一批插入
if (poiList_part.size() > 0) {
purchaseOrderItemService.insertSelectivePurchase(poiList);
}
}

} catch (IOException e) {
logger.error("excel-poi解析失败", e);
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
logger.error("excel-关闭流失败", e);
}
}
}
addMessage(redirectAttributes, "采购单上传成功");
return "redirect:" + adminPath() + "/buy/purchaesOrder.do";
}