jfinal中excel表格导出

　　今天工作中遇到了excel表格导出的操作，还好有写好的模板，不然我也是焦头烂额，下面记录一下excel表格导出的操作步骤，同时用来给正在学习jfinal的小伙伴一些参考和学习。

　　首先我们需要把表格查询出并且显示在页面上，下面是页面跳转时经过的Controller：（这里包含条件查询，所以获取信息比较复杂，全部查询只需要将获取到的pageUtils 传到前台即可，不需要添加多余的查询条件，在这里传给前台的变量名我叫他page）

public void index(){
        PageUtils pageUtils = getPageParameter();
        String where = " where 1=1 ";
        //获取当前时间
        String nowDate =DateUtils.getDate();
        if(pageUtils.getMap().get("orderNo")!=null&&!pageUtils.getMap().get("orderNo").toString().trim().equals("")){
            where = where + " and order_no like '%"+pageUtils.getMap().get("orderNo")+ "%' ";
        }
        if(pageUtils.getMap().get("customerName")!=null&&!pageUtils.getMap().get("customerName").toString().trim().equals("")){
            where = where + " and customer_name like '%"+pageUtils.getMap().get("customerName")+"%'";
        }

        if(pageUtils.getMap().get("shipmentDate")!=null&&!pageUtils.getMap().get("shipmentDate").toString().trim().equals("")){
            where = where + " and shipment_date = '"+pageUtils.getMap().get("shipmentDate")+"'";
        }
        if(pageUtils.getMap().get("isship")!=null&&!pageUtils.getMap().get("isship").toString().trim().equals("")){
            if(pageUtils.getMap().get("isship").equals("1")){
                where = where + " and Tknum is not null ";
            }else if (pageUtils.getMap().get("isship").equals("3")){
                where = where + " and ship_type!=5 and arrive_date<'"+nowDate+"' ";
            }else{
                where = where + " and Tknum is null ";
            }
        }    
        if(pageUtils.getMap().get("shipType")!=null&&!pageUtils.getMap().get("shipType").toString().trim().equals("")){
            if(pageUtils.getMap().get("shipType").equals("1")){
                where = where + " and ship_type =5 ";
            }else{
                where = where + " and ship_type !=5 ";
            }
        }
        if(pageUtils.getMap().get("ishd")!=null&&!pageUtils.getMap().get("ishd").toString().trim().equals("")){
            if(pageUtils.getMap().get("ishd").equals("1")){
                where = where + " and img is not null ";
            }else{
                where = where + " and img is null ";
            }
        }    
        where += " order by arrive_date desc ";
        pageUtils.initialize(TMSOrderList.dao.paginate(pageUtils.getPageNo(),
                pageUtils.getPageSize(), "select * ",
                " from TMS_Order_List"+where+ pageUtils.getOrderBySql()));
        if(pageUtils.getList().size()==0&&pageUtils.getPageNo()!=1){
            pageUtils.setPageNo(1);

            pageUtils.initialize(TMSOrderList.dao.paginate(pageUtils.getPageNo(),
                    pageUtils.getPageSize(), "select * ",
                    " from TMS_Order_List "+where+pageUtils.getOrderBySql()));
        }
        
        setAttr("page", pageUtils);
        setAttr("nowDate", nowDate);
        render("reportList.jsp");
    }

　　在上面我们获取到了表格信息（实体类和model我就不用写了吧），这里传到前台两个变量，和一个需要返回的页面，这里当前时间你们可能不需要，之后就是在页面接收这个值：（这里因为连表查询所以将page这个值拆开了两次，如果不

　　需要链表，直接<c:foreach>循环输出就好了,不需要<c:set>）

<input id="btnSubmit" class="btn btn-primary" type="button" value="导出" onclick="exportExcel()"/>
<table id="contentTable" class="table table-striped table-bordered table-condensed">
                    <thead>
                        <tr>
                            <th style="text-align: center;"><input id="checkAll" type="checkbox"/>序号</th>
                            <th style="text-align: center;">发运客户</th>
                            <th style="text-align: center;">订单号</th>
                            <th style="text-align: center;">装货日期</th>
                            <th style="text-align: center;">预计送达日期</th>
                            <th style="text-align: center;">运输类型</th>
                            <th style="text-align: center;">装货地址</th>
                            <th style="text-align: center;">装货联系人</th>
                            <th style="text-align: center;">装货联系方式</th>
                            <th style="text-align: center;">物料描述</th>
                            <th style="text-align: center;">装货数量</th>
                            <th style="text-align: center;">装货重量（KG)</th>
                            <th style="text-align: center;">装货体积（M3)</th>
                            <th style="text-align: center;">包装规格</th>
                            <th style="text-align: center;">到达省份</th>
                            <th style="text-align: center;">到达城市</th>
                            <th style="text-align: center;">收货客户</th>
                            <th style="text-align: center;">收货地址</th>
                            <th style="text-align: center;">收货联系人</th>
                            <th style="text-align: center;">收货联系方式</th>
                            <th style="text-align: center;">单价</th>
                            <th style="text-align: center;">应收运费</th>
                            <th style="text-align: center;">附加费用</th>
                            <th style="text-align: center;">合计运费</th>
                            <th style="text-align: center;">承运商</th>
                            <th style="text-align: center;">承运商联系方式</th>
                            <th style="text-align: center;">承运车辆</th>
                            <th style="text-align: center;">驾驶员</th>
                            <th style="text-align: center;">驾驶员联系方式</th>
                            <th style="text-align: center;">应付运费</th>
                            <th style="text-align: center;">预付运费</th>
                            <th style="text-align: center;">回付运费</th>
                            <th style="text-align: center;">附加费用</th>
                            <th style="text-align: center;">附加费单号</th>
                            <th style="text-align: center;">合同单号</th>
                            <th style="text-align: center;">备注</th>
                        </tr>
                    </thead>
                    <tbody id="pBody">
                        <c:forEach items="${page.list}" var="item" varStatus="index">
                            <c:set value="${item.client}" var="client"></c:set>
                            <c:set value="${item.vttkManual}" var="vttkManual"></c:set>
                            <tr>
                                <td>
                                <input  id="checkbox${item.id}" name="checkbox" type="checkbox" value="${item.id}" onchange="selected(this.value)"/>
                                ${index.index+1}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.customername}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.orderno}</td> 
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentdate}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.arrivedate}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shiptype}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentaddress}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentlinkman}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmenttelephone}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.materialdescription}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentqty}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentweight}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.shipmentbulk}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.packagesize}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.province}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.city}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${client.clientName}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${client.clientAddress}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${client.linkman}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${client.telphone}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.unitprice}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.receivablecharge}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.additionalcharge}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${item.totalcharge}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.name1}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;"></td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.signi}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;"></td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;"></td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.receivablefreight}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.advancefreight}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.backfreight}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.additionalfreight}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.additionalnumber}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.contract}</td>
                                <td style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${vttkManual.bezei}</td>
                            </tr>
                        </c:forEach>
                    </tbody>
                </table>

　　之后就是重点了，excel表格导出，我们可以看到这个页面的最顶端有个导出按钮，导出按钮监听了点击事件onclick="exportExcel()"，之后我们可以在页面的上方写JavaScript写一个方法：

function exportExcel (){
        $("#searchForm").attr("action","${ctx}/tms/report/exportExcel").submit();
    }

　　这里写的这个方法是跳转到tms下面report这个controller下的exportExcel方法，这个方法是这样写的：

/**
     * 导出excel
     */
    public void exportExcel(){
//        List<VttkManual> list=VttkManual.dao.find("select * from L2C_VTTK");
        List<TMSOrderList> list = TMSOrderList.dao.find("select * from TMS_Order_List");
        //Excel生成工具
        ExcelExport excelExport = new ExcelExport();
        String[] listName = {"发运客户"," 订单编号 "," 装货日期","预计送达日期 ","运输类型 ","装货地址","装货联系人",
                "装货联系方式","物料描述 ","装货数量","装货重量 (KG)","装货体积(m3) ","包装规格",
                "到达省份","到达城市 ","收货客户","收货地址","收货联系人 ","收货联系方式",
                "单价","应收运费","附加费用","合计运费","承运商","承运商联系方式 ","承运车辆",
                "驾驶员 ","驾驶员联系方式 ","应付运费","预付运费","回付运费 ","附加费用","附加费单号 ",
                "合同单号","备注"};
        Map<Integer, Object> excelMap = excelExport.createTable("列表", listName);
                
        HSSFCellStyle style = ((HSSFWorkbook) excelMap.get(3)).createCellStyle();  
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
                
        HSSFRow row = null;
        HSSFCell cells = null;
        for (int i = 0; i < list.size(); i++){                  
             row = ((HSSFSheet)excelMap.get(2)).createRow(i + 1);                  
//             VttkManual vm = list.get(i);
//             TMSOrderList order=TMSOrderList.dao.findFirst("select * from TMS_Order_List " +
//                     "where order_no='"+vm.getVbeln()+"'");
             TMSOrderList order = list.get(i);
             VttkManual vm = VttkManual.dao.findFirst("select * from L2C_VTTK where Vbeln='"+order.getOrderno()+"'");
             
             cells = row.createCell(0);
             cells.setCellValue(order.getCustomername());
             cells.setCellStyle(style);
            
             cells = row.createCell(1);
             cells.setCellValue(order.getOrderno());
             cells.setCellStyle(style);
             
             cells = row.createCell(2);
             cells.setCellValue(order.getShipmentdate());
             cells.setCellStyle(style);
             
             cells = row.createCell(3);
             cells.setCellValue(order.getArrivedate());
             cells.setCellStyle(style);
             
             cells = row.createCell(4);
             cells.setCellValue(order.getShipmenttype());
             cells.setCellStyle(style);
             
             cells = row.createCell(5);
             cells.setCellValue(order.getShipmentaddress());
             cells.setCellStyle(style);
             
             cells = row.createCell(6);
             cells.setCellValue(order.getShipmentlinkman());
             cells.setCellStyle(style);
              
             cells = row.createCell(7);
             cells.setCellValue(order.getShipmenttelephone());
             cells.setCellStyle(style);
            
             cells = row.createCell(8);
             cells.setCellValue(order.getMaterialdescription());
             cells.setCellStyle(style);
             
             cells = row.createCell(9);
             cells.setCellValue(order.getShipmentqty()==null?"":order.getShipmentqty().toString());
             cells.setCellStyle(style);
             
             cells = row.createCell(10);
             cells.setCellValue(order.getShipmentweight()==null?"":order.getShipmentweight().toString());
             cells.setCellStyle(style);
             
             cells = row.createCell(11);
             cells.setCellValue(order.getShipmentbulk()==null?"":order.getShipmentbulk().toString());
             cells.setCellStyle(style);
             
             cells = row.createCell(12);
             cells.setCellValue(order.getPackagesize());
             cells.setCellStyle(style);
             
             cells = row.createCell(13);
             cells.setCellValue(order.getProvince());
             cells.setCellStyle(style);
             
             cells = row.createCell(14);
             cells.setCellValue(order.getCity());
             cells.setCellStyle(style);
            
             if(order.getClient()!=null){
                 cells = row.createCell(15);
                 cells.setCellValue(order.getClient().getClientName());
                 cells.setCellStyle(style);
                 
                 cells = row.createCell(16);
                 cells.setCellValue(order.getClient().getClientAddress());
                 cells.setCellStyle(style);
                 
                 cells = row.createCell(17);
                 cells.setCellValue(order.getClient().getLinkman());
                 cells.setCellStyle(style);
                 
                 cells = row.createCell(18);
                 cells.setCellValue(order.getClient().getTelphone());
                 cells.setCellStyle(style);
             }
             
             cells = row.createCell(19);
             cells.setCellValue(order.getUnitprice()==null?"":order.getUnitprice().toString());
//             cells.setCellValue("");
             cells.setCellStyle(style);
             
             cells = row.createCell(20);
             cells.setCellValue(order.getReceivablecharge()==null?"":order.getReceivablecharge().toString());
//             cells.setCellValue("");
             cells.setCellStyle(style);
             
             cells = row.createCell(21);
             cells.setCellValue(order.getAdditionalcharge()==null?"":order.getAdditionalcharge().toString());
//             cells.setCellValue("");
             cells.setCellStyle(style);
            
             cells = row.createCell(22);
             cells.setCellValue(order.getTotalcharge()==null?"":order.getTotalcharge().toString());
//             cells.setCellValue("");
             cells.setCellStyle(style);
             
             
             cells = row.createCell(23);
             cells.setCellValue(vm.getName1());
             cells.setCellStyle(style);
             
             cells = row.createCell(24);
             cells.setCellValue(vm.getTelephone1());
             cells.setCellStyle(style);
             
             cells = row.createCell(25);
             cells.setCellValue(vm.getSigni());
             cells.setCellStyle(style);
            
             cells = row.createCell(26);
             cells.setCellValue(vm.getDriver());
             cells.setCellStyle(style);
             
             cells = row.createCell(27);
             cells.setCellValue(vm.getTelephone2());
             cells.setCellStyle(style);
             
             cells = row.createCell(28);
             cells.setCellValue(vm.getReceivablefreight());
             cells.setCellStyle(style);
             
             cells = row.createCell(29);
             cells.setCellValue(vm.getAdvancefreight());
             cells.setCellStyle(style);
             
             cells = row.createCell(30);
             cells.setCellValue(vm.getBackfreight());
             cells.setCellStyle(style);
             
             cells = row.createCell(31);
             cells.setCellValue(vm.getAdditionalfreight());
             cells.setCellStyle(style);
             
             cells = row.createCell(32);
             cells.setCellValue(vm.getAdditionalnumber());
             cells.setCellStyle(style);
             
             cells = row.createCell(33);
             cells.setCellValue(vm.getContract());
             cells.setCellStyle(style);
             
             cells = row.createCell(34);
             cells.setCellValue(vm.getBezei());
             cells.setCellStyle(style);
        }
                
        // 第六步，将文件存到指定位置  
        try{  
               SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
               String code = sdf.format(new Date());
               String fileName = "订单全部明细"+code+".xls";
               String path = JFinal.me().getConstants().getFileRenderPath();//获取项目配置下载路径
               path = path.replace("\","/");
               FileOutputStream fout = new FileOutputStream(path+"/"+fileName);  
               ((HSSFWorkbook)excelMap.get(3)).write(fout);
               fout.close();
               addMessageSuccess("导出成功");
                    
               renderFile(fileName);
                    
         }catch (Exception e){  
               e.printStackTrace(); 
               addMessageError("导出失败");
               redirect("/tms/report");
        }  
    }

　　之后大概就都懂了把，最上面String[] listName 是每列的字段名，下面 

　　　　　　　　cells = row.createCell(0);代表的是当前列数；

　　　　　　　　cells.setCellValue(order.getCustomername());代表的是当前列插入的内容；

　　　　　　　　cells.setCellStyle(style);代表当前单元格内的样式

下面配置好路径就可以道出了，导出成功之后页面会提示你保存的路径，保存之后就可以查看了，是不是很简单呢