try {
      WritableWorkbook workbook = Workbook.createWorkbook(new File(
          filePos));// 创建工作簿
      WritableSheet sheet = workbook.createSheet("First Sheet", 0);// 创建工作页

     // 向单元格添加文字
     for (int i = 0; i < columns.length; i++) {
        sheet.addCell(new Label( i,0, columns[i]));
      }

      for (int i = 0; i < members.size(); i++) {
        Member member = members.get(i);

        sheet.addCell(new Label( 0, i+1,member.getName()));
        sheet.addCell(new Label( 1,i+1, member.getAge()));
        sheet.addCell(new Label( 2,i+1, member.getTitle()));
      }

      workbook.write();// 书写到工作簿
      workbook.close();// 关闭工作簿,输出完成
    } catch (Exception e) {
      e.printStackTrace();
    }