POI Excel 02

@author YHC

工作薄中不同类型的单元格

   Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");
    Row row = sheet.createRow(2);
    row.createCell(0).setCellValue(1.1);//浮点
    row.createCell(1).setCellValue(new Date());//日期
    row.createCell(2).setCellValue(Calendar.getInstance());//日期
    row.createCell(3).setCellValue("a string");//字符串
    row.createCell(4).setCellValue(true);//Boolean
    row.createCell(5).setCellType(Cell.CELL_TYPE_ERROR);//错误

    // 写入文件
    FileOutputStream fileOut = new FileOutputStream("workbook.xls");
    wb.write(fileOut);
    fileOut.close();

运行结果:

展示各种对其选项

 public static void main(String[] args)  throws Exception {
        Workbook wb = new XSSFWorkbook(); //或者创建 HSSFWorkbook();对象

        Sheet sheet = wb.createSheet();//创建工作薄
        Row row = sheet.createRow((short) 2);//创建行
        row.setHeightInPoints(30);//设置高度Point像素单位设置高度

        createCell(wb, row, (short) 0, CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_BOTTOM);
        createCell(wb, row, (short) 1, CellStyle.ALIGN_CENTER_SELECTION, CellStyle.VERTICAL_BOTTOM);
        createCell(wb, row, (short) 2, CellStyle.ALIGN_FILL, CellStyle.VERTICAL_CENTER);
        createCell(wb, row, (short) 3, CellStyle.ALIGN_GENERAL, CellStyle.VERTICAL_CENTER);
        createCell(wb, row, (short) 4, CellStyle.ALIGN_JUSTIFY, CellStyle.VERTICAL_JUSTIFY);
        createCell(wb, row, (short) 5, CellStyle.ALIGN_LEFT, CellStyle.VERTICAL_TOP);
        createCell(wb, row, (short) 6, CellStyle.ALIGN_RIGHT, CellStyle.VERTICAL_TOP);

        //写入文件
        FileOutputStream fileOut = new FileOutputStream("xssf-align.xls");
        wb.write(fileOut);
        fileOut.close();

    }

    /**
     * 创建一个单元格,并以一种特定的样式对齐
     *
     * @param wb      Workbook对象
     * @param row    创建单元格的行对象
     * @param column 列的编号,单元格创建位置
     * @param halign 单元格中的水平对齐方式.  
     * @param valign 单元格中的垂直对齐方式
     */
   private static void createCell(Workbook wb, Row row, short column, short halign, short valign) {
        Cell cell = row.createCell(column);//创建Cell
        cell.setCellValue("Align It");//设置值
        CellStyle cellStyle = wb.createCellStyle();//创建样式
        cellStyle.setAlignment(halign);//设置水平对齐方式
        cellStyle.setVerticalAlignment(valign);//设置垂直对齐方式
        cell.setCellStyle(cellStyle);//给单元格添加样式
    }

运行结果: