poi export table

 

 @GetMapping("exportExcel")
    public void exportExcel (HttpServletResponse response ,String day) throws IOException{
        if((day!=null&&day.trim().equals(""))||day==null) day = "0";

        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet("信息表");

        List<SbView> sbViewList = sopBorrowLogService.findAllSbView();

        String fileName = "sop_borrow"  + ".xls";//设置要导出的文件的名字

        //新增数据行，并且设置单元格数据
        int rowNum = 1;
        //headers表示excel表中第一行的表头
        String[] headers = { "客户","机种","品名","料号","借用人工号","借用人", "借用人部门","借出确认者工号","借出时间","已借天数"};
        //在excel表中添加表头
        HSSFRow row = sheet.createRow(0);
        for(int i=0;i<headers.length;i++){
            HSSFCell cell = row.createCell(i);
            HSSFRichTextString text = new HSSFRichTextString(headers[i]);
            cell.setCellValue(text);
        }
        //在表中存放查询到的数据放入对应的列
        for(SbView sbView:sbViewList){
            if(sbView.getReturnTime()!=null) continue; //已经归还了
            //借阅时间没超过7天的
            LocalDateTime localDateTime = LocalDateTime.now();
            LocalDateTime borrowTime = sbView.getBorrowTime();
            Duration duration = Duration.between(borrowTime,localDateTime);
            long d = duration.toDays();
            if(duration.toDays()<Integer.parseInt(day)) continue;

            HSSFRow row1 = sheet.createRow(rowNum);
            row1.createCell(0).setCellValue(sbView.getSop().getCustomer());
            row1.createCell(1).setCellValue(sbView.getSop().getMachineName());
            row1.createCell(2).setCellValue(sbView.getSop().getProduction());
            row1.createCell(3).setCellValue(sbView.getSop().getPart());
            row1.createCell(4).setCellValue(sbView.getBorrowJobNo());
            row1.createCell(5).setCellValue(sbView.getBorrower());
            row1.createCell(6).setCellValue(sbView.getBorrowerDept());
            row1.createCell(7).setCellValue(sbView.getLentJobNo());

            Date date = Date.from( borrowTime.atZone( ZoneId.systemDefault()).toInstant());
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            row1.createCell(8).setCellValue(sdf.format(date));
            row1.createCell(9).setCellValue(duration.toDays());//已借天书
            rowNum++;
        }

        response.setContentType("application/octet-stream");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName);
        response.flushBuffer();
        workbook.write(response.getOutputStream());
}