把Execl表格中的数据获取出来保存到数据库中

　　比如我们遇到一些需要把execl表格中的数据保存到数据库中，一条一条保存效率底下而且容易出错，数据量少还好，一旦遇到数据量大的时候就会累死个人啊，下面我们就来把execl表格中数据保存到对应的数据库中

<div id="deploydiv">
		<form id="ff"
			action="<%=request.getContextPath()%>/theta/file/fileReadExcel"
			method="post" enctype="multipart/form-data">
			<table  align="center">
				<tr>
					<td>文件:</td>
					<td><input name="file"  class="f1 easyui-filebox"/>
					<!-- <input name="op" type="hidden" id="op"/></td> -->
				</tr>
				<tr>
					<td colspan="2" align="center"><input type="submit" value="提交"></input></td>
				</tr>
			</table>
		</form>
</div>

　　jsp页面写好之后，进入Controller具体实现类

@RequestMapping("/fileReadExcel")
        @ResponseBody
        public AjaxCommonResultBean getFileReadExcel(@RequestParam MultipartFile file){
            AjaxCommonResultBean res = new AjaxCommonResultBean();
            boolean result = filereadservice.readExcelFile(file);
            if(result){
                res.setSuccess(true);
                res.setMessage("提交成功");
            }else{
                res.setSuccess(false);
                res.setMessage("提交失败");
            }
            return res;
        }

　　具体实现类

 public boolean readExcelFile(MultipartFile file) {
        boolean result =false;
        List<fileReadBean> fileList = getExcelInfo(file);
        if(fileList != null && !fileList.isEmpty()){
            result = true;
        }else{
            result = false;
        }
        return result;
    }
    public List<fileReadBean> getExcelInfo(MultipartFile file) {
        String fileName = file.getOriginalFilename();//获取文件名
        String ext = fileName.substring(fileName.lastIndexOf("."));
        try {
            if (!validateExcel(fileName)) {// 验证文件名是否合格
                return null;
            }
            List<fileReadBean> fileList = createExcel(file.getInputStream(),ext);
            return fileList;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    private List<fileReadBean> createExcel(InputStream is,String ext) {
        try{
            HSSFWorkbook wb = null;
            XSSFWorkbook xwb = null;
            List<fileReadBean> fileList = null;
            if(".xls".equals(ext)){  //HSSF方式获取文件
                 wb = new HSSFWorkbook(is);
                 fileList = readExcelValue(wb);  // 读取Excel里面客户的信息
            }else if(".xlsx".equals(ext)){  //XSSF方式获取文件
                xwb = new XSSFWorkbook(is);
                fileList = readXExcelValue(xwb);
            }
            return fileList;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
    private List<fileReadBean> readXExcelValue(XSSFWorkbook xwb) {
        List<fileReadBean> fileList = new ArrayList<fileReadBean>();
        for (int numSheet = 0; numSheet < xwb.getNumberOfSheets(); numSheet++) {
            XSSFSheet xssfSheet = xwb.getSheetAt(numSheet);
            if (xssfSheet == null) {
                continue;
            }
            // 循环行Row
            for (int rowNum = 0; rowNum <= xssfSheet.getLastRowNum(); rowNum++) {
                XSSFRow xssfRow = xssfSheet.getRow(rowNum);
                if (xssfRow == null) {
                    continue;
                }
                int num=fileReaddao.findSame(getValue(xssfRow.getCell(1)));
             // 循环列Cell
//            for (int cellNum = 0; cellNum <= xssfRow.getLastCellNum(); cellNum++) {
//                XSSFCell xssfCell = xssfRow.getCell(cellNum);
//                if (xssfCell == null) {
//                    continue;
//                }
//                System.out.print("   " + getValue(xssfCell));
//            }
                if(rowNum > 3 && num < 1){
                fileReadBean fileread = new fileReadBean();
                fileread.setId(UUID.randomUUID().toString());
                fileread.setTransactionDate(getValue(xssfRow.getCell(0)));
                fileread.setTransationId(getValue(xssfRow.getCell(1)));
                fileread.setRemark(getValue(xssfRow.getCell(2)));
                fileread.setOtherBankId(getValue(xssfRow.getCell(3)));
                fileread.setOtherBankName(getValue(xssfRow.getCell(4)));
                fileread.setTransfer(getValue(xssfRow.getCell(5)));
                fileread.setPayment(getValue(xssfRow.getCell(6)));
                fileread.setReceived(getValue(xssfRow.getCell(7)));
                fileread.setBalance(getValue(xssfRow.getCell(8)));
                fileReaddao.insertFileRead(fileread);    //把文件中的数据插入数据库
                fileList.add(fileread);
                }
            }
        }
        return fileList;
    }
    private List<fileReadBean> readExcelValue(HSSFWorkbook wb) {
        List<fileReadBean> fileList = new ArrayList<fileReadBean>();
        for (int numSheet = 0; numSheet < wb.getNumberOfSheets(); numSheet++) {
            HSSFSheet hssfSheet = wb.getSheetAt(numSheet);
            if (hssfSheet == null) {
                continue;
            }
            // 循环行Row
            for (int rowNum = 0; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
                HSSFRow hssfRow = hssfSheet.getRow(rowNum);
                if (hssfRow == null) {
                    continue;
                }
                //查询是否有重复的交易号
                int num=fileReaddao.findSame(getValue(hssfRow.getCell(1)));
             // 循环列Cell
            //    for (int cellNum = 0; cellNum <= hssfRow.getLastCellNum(); cellNum++) {
            //        HSSFCell hssfCell = hssfRow.getCell(cellNum);
            //        if (hssfCell == null) {
            //            continue;
            //        }
                // 循环列Cell
                if(rowNum > 3 && num < 1){
                fileReadBean fileread = new fileReadBean();
                fileread.setId(UUID.randomUUID().toString());
                fileread.setTransactionDate(getValue(hssfRow.getCell(0)));
                fileread.setTransationId(getValue(hssfRow.getCell(1)));
                fileread.setRemark(getValue(hssfRow.getCell(2)));
                fileread.setOtherBankId(getValue(hssfRow.getCell(3)));
                fileread.setOtherBankName(getValue(hssfRow.getCell(4)));
                fileread.setTransfer(getValue(hssfRow.getCell(5)));
                fileread.setPayment(getValue(hssfRow.getCell(6)));
                fileread.setReceived(getValue(hssfRow.getCell(7)));
                fileread.setBalance(getValue(hssfRow.getCell(8)));
                fileReaddao.insertFileRead(fileread);    //把文件中的数据插入数据库
                fileList.add(fileread);
                }
               /* for (int cellNum = 0; cellNum <= hssfRow.getLastCellNum(); cellNum++) {
                    HSSFCell hssfCell = hssfRow.getCell(cellNum);
                    System.out.print("    " + getValue(hssfCell));
                }*/
            }
        }
        return fileList;
    }
    @SuppressWarnings("static-access")
    private String getValue(XSSFCell xssfCell) {
        if (xssfCell.getCellType() == xssfCell.CELL_TYPE_BOOLEAN) {
            return String.valueOf(xssfCell.getBooleanCellValue());
        } else if (xssfCell.getCellType() == xssfCell.CELL_TYPE_NUMERIC) {
            return String.valueOf(xssfCell.getNumericCellValue());
        } else {
            return String.valueOf(xssfCell.getStringCellValue());
        }
    }
    @SuppressWarnings("static-access")
    private String getValue(HSSFCell hssfCell) {
        if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
            return String.valueOf(hssfCell.getBooleanCellValue());
        } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
            return String.valueOf(hssfCell.getNumericCellValue());
        } else {
            return String.valueOf(hssfCell.getStringCellValue());
        }
    }
    //验证文件名是否合格
    private boolean validateExcel(String fileName) {
            if (fileName == null) {
               String errorMsg = "文件名不是excel格式";
                return false;
            }
            return true;
    }

　　　　这样就可以把execl表格中的数据全部保存到数据库中了！如有不当之处请多多指正，一起交流，共同学习！