java 导出 Excel 表格

//导出excel
    @Override
    public void getExportExcel(HttpServletRequest request, HttpServletResponse response, SearchParams params) throws Exception {
        List<BillOtherAccount> list = findByCondition(params); //查询到数据对象封装到集合中
        if(list.size()>0){
            //开始excel导出
            String fname = "第三方对账查询";
            OutputStream os = response.getOutputStream();//取得输出流
            response.reset();//清空输出流
            //下面是对中文文件名的处理
            response.setCharacterEncoding("UTF-8");//设置相应内容的编码格式
            //fname = java.net.URLEncoder.encode(fname,"UTF-8");
            //response.setHeader("Content-Disposition","attachment;filename="+new String(fname.getBytes("UTF-8"),"GBK")+".xls");
            response.setHeader("Content-Disposition", "attachment;filename=" + new String(fname.getBytes(),"iso-8859-1") + ".xls");
            response.setContentType("application/msexcel");//定义输出类型
            //创建工作薄
            WritableWorkbook workbook = Workbook.createWorkbook(os);
            //创建新的一页
            WritableSheet sheet = workbook.createSheet("First Sheet",0);
            //设置字体种类和格式
            WritableFont bold = new WritableFont(WritableFont.createFont("宋体"), 12, WritableFont.NO_BOLD);
            WritableCellFormat wcfFormat = new WritableCellFormat(bold);
            //wcfFormat.setAlignment(jxl.format.Alignment.CENTRE);//单元格中的内容水平

            //设置第3列单元格宽
            //sheet.setColumnView(4, 50);
            //设置第三行单元格高
            //sheet.setRowView(4, 50);
            //创建要显示的内容,创建一个单元格，第一个参数为列坐标，第二个参数为行坐标，第三个参数为内容

          /*  //创建表头
            Label billIdColumn = new Label(0,0,"id",wcfFormat);
            sheet.addCell(billIdColumn);
            //设置某个单元格宽
            sheet.setColumnView(0, 20);*/

            Label billTimeColumn = new Label(0,0,"订单日期",wcfFormat);
            sheet.addCell(billTimeColumn);
            //设置某个单元格宽
            sheet.setColumnView(0, 25);

            Label serialNumberColumn = new Label(1,0,"支付平台流水号",wcfFormat);
            sheet.addCell(serialNumberColumn);
            //设置某个单元格宽
            sheet.setColumnView(1, 40);

            Label otherSerialNumberColumn = new Label(2,0,"第三方流水号",wcfFormat);
            sheet.addCell(otherSerialNumberColumn);
            //设置某个单元格宽
            sheet.setColumnView(2, 25);

            Label appIdColumn = new Label(3,0,"商户ID ",wcfFormat);
            sheet.addCell(appIdColumn);
            //设置某个单元格宽
            sheet.setColumnView(3, 20);

            Label orderTypeColumn = new Label(4,0,"订单类型",wcfFormat);
            sheet.addCell(orderTypeColumn);
            //设置某个单元格宽
            sheet.setColumnView(4, 20);

            Label orderMoneyColumn = new Label(5,0,"订单金额",wcfFormat);
            sheet.addCell(orderMoneyColumn);
            //设置某个单元格宽
            sheet.setColumnView(5, 20);

            Label ext2Column = new Label(6,0,"支付方式",wcfFormat);
            sheet.addCell(ext2Column);
            //设置某个单元格宽
            sheet.setColumnView(6, 20);

            Label refundColumn = new Label(7,0,"退款金额",wcfFormat);
            sheet.addCell(refundColumn);
            //设置某个单元格宽
            sheet.setColumnView(7, 20);

            Label orderStateColumn = new Label(8,0,"账单状态",wcfFormat);
            sheet.addCell(orderStateColumn);
            //设置某个单元格宽
            sheet.setColumnView(8, 20);

            Label ext1Column = new Label(9,0,"对账状态",wcfFormat);
            sheet.addCell(ext1Column);
            //设置某个单元格宽
            sheet.setColumnView(9, 20);

            Label ext3Column = new Label(10,0,"差账原因",wcfFormat);
            sheet.addCell(ext3Column);
            //设置某个单元格宽
            sheet.setColumnView(10, 20);



            //加载每行数据
            for (int i = 1; i <= list.size(); i++) {
               /* Label billId = new Label(0,i,list.get(i-1).getBillId(),wcfFormat);
                sheet.addCell(billId);*/

                Date besDate = list.get(i-1).getBillTime();
                if(besDate !=null){
                    Label bespeakDate = new Label(0,i,formatDate(besDate),wcfFormat);
                    sheet.addCell(bespeakDate);
                }

                Label serialNumber = new Label(1,i,list.get(i-1).getSerialNumber(),wcfFormat);
                sheet.addCell(serialNumber);

                Label OtherSerialNumber = new Label(2,i,list.get(i-1).getOtherSerialNumber(),wcfFormat);
                sheet.addCell(OtherSerialNumber);


                Label appId = new Label(3,i,list.get(i-1).getAppId(),wcfFormat);
                sheet.addCell(appId);

                Label orderType = new Label(4,i,list.get(i-1).getOrderType(),wcfFormat);
                sheet.addCell(orderType);

                Label orderMoney = new Label(5,i,list.get(i-1).getOrderMoney(),wcfFormat);
                sheet.addCell(orderMoney);

                Label ext2 = new Label(6,i,list.get(i-1).getExt2(),wcfFormat);
                sheet.addCell(ext2);

                Label refund = new Label(7,i,list.get(i-1).getRefund(),wcfFormat);
                sheet.addCell(refund);

                Label orderState = new Label(8,i,list.get(i-1).getOrderState(),wcfFormat);
                sheet.addCell(orderState);

                String ext1 = list.get(i-1).getExt1();
                String checkState = "";
                if (ext1 == null){
                    ext1 = "";
                }
                if (ext1.equals("1")){
                    checkState = "异常账单";
                }else {
                    checkState = "正常账单";
                }
                Label label = new Label(9, i, checkState, wcfFormat);
                sheet.addCell(label);

                Label ext3 = new Label(10,i,list.get(i-1).getExt3(),wcfFormat);
                sheet.addCell(ext3);

            }
            //把创建的内容写入到输出流中，并关闭输出流
            workbook.write();
            workbook.close();
            os.close();
        }

    }

    public String formatDate(Date date){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateStr = sdf.format(date);
        return dateStr;
    }

    public String formatHourAndMinute(Date date){
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
        String dateStr = sdf.format(date);
        return dateStr;
    }

 只提供例了核心业务层代码，需要有对应的实体类对象