导出Excel

package net.guoguoda.admin.act.controller;

import java.io.OutputStream;

import java.util.Date;

import java.util.List;



import net.guoguoda.act.model.ActBase;

import net.guoguoda.act.model.ActGGDRRegister;

import net.guoguoda.admin.common.controller.BaseController;



import org.apache.commons.lang.StringUtils;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;



import com.jfinal.ext.route.ControllerBind;



import com.wecode.framework.ext.jfinal.controller.DateRange;

@ControllerBind(controllerKey="这里是前段访问控制器的路径")

public class ExcelController extends BaseController{

      public void index(){

            //这里是获取数据Excel数据

            createExcel(dataList,ActBase.dao.loadById(act_id).getStr("name"));//dataList就是获取的数据

            renderNull();

//            renderJson(JsonResult.success().toJson());

        }



        private void createExcel(List<ActGGDRRegister> record,String name){

    　　　　// 第一步，创建一个webbook，对应一个Excel文件

            HSSFWorkbook wb = new HSSFWorkbook();

            // 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet

            HSSFSheet sheet = wb.createSheet("优惠券串码信息");

            sheet.setColumnWidth(0,5000);

            sheet.setColumnWidth(1,5000);

            sheet.setColumnWidth(2,5000);

            sheet.setColumnWidth(3,5000);

            sheet.setColumnWidth(4,5000);

            sheet.setColumnWidth(5,5000);

            sheet.setColumnWidth(6,5000);

            sheet.setColumnWidth(7,5000);

            sheet.setColumnWidth(8,5000);

            // 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short

            HSSFRow row = sheet.createRow((int) 0);

            // 第四步，创建单元格，并设置值表头 设置表头居中

            HSSFCellStyle style = wb.createCellStyle();

            style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式



            HSSFCell cell = row.createCell(0);

            cell.setCellValue("姓名");

            cell.setCellStyle(style);

            

            cell = row.createCell(1);

            cell.setCellValue("微信昵称");

            cell.setCellStyle(style);

            

            cell = row.createCell(2);

            cell.setCellValue("手机号");

            cell.setCellStyle(style);

            

            cell = row.createCell(3);

            cell.setCellValue("地址");

            cell.setCellStyle(style);

            

            cell = row.createCell(4);

            cell.setCellValue("参与时间");

            cell.setCellStyle(style);

            

            cell = row.createCell(5);

            cell.setCellValue("实际投票量");

            cell.setCellStyle(style);

            

            cell = row.createCell(6);

            cell.setCellValue("虚拟投票量");

            cell.setCellStyle(style);

            

            cell = row.createCell(7);

            cell.setCellValue("状态");

            cell.setCellStyle(style);

            

            cell = row.createCell(8);

            cell.setCellValue("图片提交");

            cell.setCellStyle(style);

            

             //第五步，写入实体数据 实际应用中这些数据从数据库得到，

            for (int i = 0; i < record.size(); i++)

            {

                ActGGDRRegister register  = record.get(i);

                row = sheet.createRow((int) i + 1);

                // 第四步，创建单元格，并设置值

                row.createCell(0).setCellValue(register.getStr("name"));

                row.createCell(1).setCellValue(register.getStr("card_no"));

                row.createCell(2).setCellValue(register.getStr("phone"));

                row.createCell(3).setCellValue(register.getStr("address"));               

                row.createCell(4).setCellValue(register.getDate("create_time").toString());

                row.createCell(5).setCellValue(register.getInt("votes"));

                row.createCell(6).setCellValue(register.getInt("virtual_votes"));

                row.createCell(7).setCellValue(register.getStatusDesc());

                row.createCell(8).setCellValue(register.getPicNumber()+"("+register.getPassedPicNumber()+")");

            }



            try {

                getResponse().reset(); // 非常重要

                getResponse().setContentType("application/vnd.ms-excel");

                String fileName = name+"-用户报名信息表"+".xls";

                getResponse().setHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes(),"iso-8859-1"));

                //创建输出流对象

                OutputStream outStream = getResponse().getOutputStream();

                wb.write(outStream);

                outStream.close();

            }catch (Exception e){

                e.printStackTrace();

            }

        }

}