when you use Java to read excel, the decimal is automatically converted to an imprecise decimal point.

read the code of excel

    public static List<String[]> readExcel(File file) throws Exception {
        //
         List<String[]> dataList = new ArrayList<String[]>(); 
        //Workbook  
        Workbook workbook = getWorkBook(file); 
        if (workbook == null) 
            throw new Exception("excelworkbook build null");
        for (int sheetNum = 0; sheetNum < workbook.getNumberOfSheets(); sheetNumPP) {
            //sheet  
            Sheet sheet = workbook.getSheetAt(sheetNum);  
            if (sheet == null)   
                continue;  
            if (sheet.getNumMergedRegions() > 0)  
                setSheetMergedRegionsValue(sheet); 
            //sheet  
            int firstRowNum  = sheet.getFirstRowNum();  
            //sheet  
            int lastRowNum = sheet.getLastRowNum();   
            //  
            for (int rowNum = firstRowNum; rowNum <= lastRowNum; rowNumPP) {
                //  
                Row row = sheet.getRow(rowNum);  
                if (row == null)   
                    continue;  
                //  
                int firstCellNum = row.getFirstCellNum();  
                //  
                int lastCellNum = row.getPhysicalNumberOfCells();  
                String[] cells = new String[row.getPhysicalNumberOfCells()];  
                //  
                for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNumPP) {   
                    if (cellNum < 0)
                        continue;
                    Cell cell = row.getCell(cellNum);  
                    if (cell == null)
                        continue;
                    cell.setCellType(Cell.CELL_TYPE_STRING); 
                    cells[cellNum] = cell.getStringCellValue(); 
                }  
                // continue
                if (cells.length > 0 && StringUtils.isBlank(cells[0]))
                    continue;
                dataList.add(cells);
            }
        }
        //workbook.close();
        
        return dataList;
    }

excel raw file

how to solve this problem?