hutool-動態導出表頭導出

准備

　　官方網站:https://www.hutool.cn/docs/#/

  public static void writeExcel(HttpServletResponse response, ExcelWriter writer, String fileName) {
        //response為HttpServletResponse對象
        response.setContentType("application/vnd.ms-excel;charset=utf-8");
        //test.xls是彈出下載對話框的文件名，不能為中文，中文請自行編碼
        response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
        ServletOutputStream servletOutputStream = null;
        try {
            servletOutputStream = response.getOutputStream();
            //Workbook workbook = writer.getWorkbook();
            // workbook.write(servletOutputStream);
            writer.flush(servletOutputStream);
            servletOutputStream.flush();
        } catch (IORuntimeException | IOException e) {
            e.printStackTrace();
        } finally {
            writer.close();
            try {
                if (servletOutputStream != null) {
                    servletOutputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

 

步驟1 

    /**
     * 表頭
     *
     * @param writer 導出文件
     * @param titleName 表頭參數
     */
    private void header(ExcelWriter writer, List<String> titleName) {
        int headerCol = -1;
        for (String typeName : titleName) {
            ExcelHelper.mergeIfNeed(writer, 0, 0, ++headerCol, headerCol + 2, 20, typeName);
            writer.writeCellValue(headerCol, 1, "序號");
            writer.writeCellValue(++headerCol, 1, "名稱");
            writer.writeCellValue(++headerCol, 1, "聯系人");
        }
    }

步驟2

　　表格之間計算  row   col   i 根據自己的需求調整

 

/**
     * 導出數據
     *
     * @param writer 文件
     * @param mainList 數據
     * @param titleName 表頭
     */
    private void body(ExcelWriter writer, List<SourcePatrolMain> mainList, List<String> titleName) {
        int row = 1;
        int col = 0;
        int i = 0;
        for (String title : titleName) {
            i++;
            int nub = 1; 
            //這里篩選數據每個表頭數據
            for (SourcePatrolMain main : 篩選數據) {
                col = 3 * i == 3 ? 0 : 3 * (i - 1);
                row++;
                writer.writeCellValue(col++, row, nub++);
                writer.writeCellValue(col++, row, main.getMianName());
                writer.writeCellValue(col++, row,main.getManager()+" "+ main.getPhone());
            }
            row = 1;
        }
    }         

 

 

 

步驟3

/*
 * titleList 表頭
 * mainList 導出數據
 */
ExcelWriter writer = ExcelUtil.getWriter();
header(writer, titleList);
body(writer, mainList, titleList);
ExcelHelper.writeExcel(response, writer, "fileName.xls");