poi的基本导入

一。获取列的值

private String getCell(Cell cell){
    if(null == cell){
        return "";
    }

   try{
         cell.setCellType(Cell.CELL_TYPE_STRING);
      String v = cell.getStringCellValue();
      return v;
    }catch(Exception e){
          e.printStackTrace();
    }
} 

二。创建列

private HSSFCell createCell(HSSFRow row ,int index,String text){
    HSSFCell cell = row.createCell(index);
    cell.setCellType(XSSFCell.CELL_TYPE_STRING);
    HSSFRichTextString cellText = new HSSFRichTextString();
    cell.setCellValue(cellText);
    return cell;
}

三。导入excel中的数据

XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet  =workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.iterator();
Row rowHead = rowIterator.next();
Row row = rowIterator.next();
row.getCell(0).setCellType(Cell.CELL_TYPE_STRING);//给某列设置列类型
row.getCell(0).getStringCellValue().trim();
//得到值之后，存进一个集合里，然后批量插入数据库
//最后给前端提示即可