2021.11.7 读取文件生成数据字典

    public List<Data1> poi2(String path){
        List<Data1> list=new ArrayList<>();
        try {
            FileInputStream fis = new FileInputStream(path);
//            String city;
            Data1 data1=null;
            XSSFWorkbook workbook =  new XSSFWorkbook(fis);
            XSSFSheet sheet = workbook.getSheetAt(0);
            int firstRowNum = sheet.getFirstRowNum();
            int lastRowNum = sheet.getLastRowNum();
            Row firstRow = sheet.getRow(firstRowNum);
            int firstCellNum = firstRow.getFirstCellNum();
            int lastCellNum = firstRow.getLastCellNum();
            Row row= sheet.getRow(3);
            String content1="";
            for(int i = 0; i < lastCellNum; i++) {

                //sheet.getRow(3).getCell(i).setCellType(Cell.CELL_TYPE_STRING);
                //sheet.getRow(3).getCell(i).setCellType(CellType.STRING_FORMULA);

                Cell cell= row.getCell(i);
                int celltype=cell.getCellType();
                switch (celltype){
                    case HSSFCell.CELL_TYPE_STRING: // 字符串
                        content1=sheet.getRow(3).getCell(i).getStringCellValue();
                        break;
                    case HSSFCell.CELL_TYPE_NUMERIC: // 数字
                        content1 =String.valueOf(sheet.getRow(3).getCell(i).getNumericCellValue());
                        break;
                }
                String city=sheet.getRow(2).getCell(i).getStringCellValue();
                String danwei=sheet.getRow(1).getCell(i).getStringCellValue();
                //System.out.print(sheet.getRow(0).getCell(j).getNumericCellValue() + " ");
                String user=sheet.getRow(0).getCell(i).getStringCellValue();
                //String data=sheet.getRow(3).getCell(i).getStringCellValue();
                data1=new Data1(user,city,danwei,content1);
                list.add(data1);
                //System.out.println(list.get(i));
            }

        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
    }