java 通过poi 读取Excel 写入sqlser mysql

1. 引用pom

        
            org.apache.poi
            poi
            3.14
        
        
            org.apache.poi
            poi-ooxml
            3.14
        

2. 写函数

读取的Excel

目标表格

需要注意数字列的读法

    private void importExcel() {
        try {
            FileInputStream in = new FileInputStream("F:\\country.xlsx");//Excel路径
            //Workbook wb = new HSSFWorkbook(in);//Excel版本<=Office 2007
            Workbook wb = new XSSFWorkbook(in);//Excel版本Office> 2007
            Sheet sheet = wb.getSheetAt(1);//sheet页码， 从0开始，1表示第二个sheet
            for (Row row : sheet) {
                if (row.getRowNum() < 1) {//第一行通常为表头，不读
                    continue;
                }
                CountryExchangeRate eInfo = new CountryExchangeRate();
                Cell numCell =row.getCell(0);//如果是数字，1读出来是1.0，不能Integer.parseInt
                //数字列处理的第一种方法，推荐
                if(numCell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
                    String str = NumberToTextConverter.toText(numCell.getNumericCellValue());
                    eInfo.setCountryCode(Integer.parseInt(str));
                }
                //数字列处理的第二种方法，不推荐
                //numCell.setCellType(Cell.CELL_TYPE_STRING);//regardless of how the user formatted the cell
                //String test=row.getCell(0).toString();//1
                //eInfo.setCountryCode(Integer.parseInt(test));
                eInfo.setCountryName(row.getCell(1).getStringCellValue());
                eInfo.setCurrency(row.getCell(2).getStringCellValue());
                eInfo.setCurrencyName(row.getCell(3).getStringCellValue());
                eInfo.setExchange(BigDecimal.ZERO);
                eInfo.setDatachangeLasttime(new Timestamp(System.currentTimeMillis()));
                eInfo.setDatachangeCreatetime(new Timestamp(System.currentTimeMillis()));
                countryExchangeRateDao.insert(eInfo);//插入数据到db
            }
            in.close();
        } catch (Exception ex) {
            logger.warn("importExcel Exception", 0, ex);
        }
    }