java分页数据导出excel

/**
* 订单导出（用于统计利润）
* @return
*/
public String orderExport() throws IOException{
if (queryOrderList_currentPage == null || queryOrderList_currentPage <= 0) {
queryOrderList_currentPage = 1;
}
OrderInfo order = new OrderInfo();
if (!StringUtil.isNull(queryOrderList_orderStatus)) {
order.setOrderStatus(queryOrderList_orderStatus);
}
if (!StringUtil.isNull(queryOrderList_orderCard)) {
order.setOrderCard(queryOrderList_orderCard);
}
if (!StringUtil.isNull(queryOrderList_memberPhone)) {
order.setMemberPhone(queryOrderList_memberPhone);
}
if (!StringUtil.isNull(queryOrderList_memberContactsPhone)) {
order.setMemberContactsPhone(queryOrderList_memberContactsPhone);
}
if (queryOrderList_businessId != null && queryOrderList_businessId > 0) {
order.setBusinessId(queryOrderList_businessId);
}
if (!StringUtil.isNull(queryOrderList_addressDesc)) {
order.setAddressDesc(queryOrderList_addressDesc);
}if (!StringUtil.isNull(queryOrderList_beginTime) && !StringUtil.isNull(queryOrderList_endTime)) {
order.setBeginTime(queryOrderList_beginTime);
order.setEndTime(queryOrderList_endTime);
}try {
HttpServletResponse response = ServletActionContext.getResponse();
queryOrderList_pageBean = statisticsService.queryOrderListByCompanyConditions(order,queryOrderList_currentPage, queryOrderList_pageSize);
int totalPage = queryOrderList_pageBean.getTotalPage();
response.reset();
SimpleDateFormat sdFormat = new SimpleDateFormat("yyyy-MM-dd");
String fname= "订单导出"+sdFormat.format(new Date());
fname=new String(fname.getBytes("GBK"),"ISO_8859_1");//文件名{避免出现乱码}
response.setHeader("Content-disposition", "attachment; filename="+fname+".csv");// 设定输出文件头
response.setContentType("text/csv");
response.setCharacterEncoding("UTF-8");
OutputStream out = response.getOutputStream();
String sep = ",";
//列名
for(int column=0;column<CompanyConfig.ORDER_EXPORT_COLUMN.split(",").length;column++){
out.write(CompanyConfig.ORDER_EXPORT_COLUMN.split(",")[column].getBytes());
out.write(sep.getBytes());
}
//换行符
out.write(System.getProperty("line.separator").getBytes());
//数据
OrderInfo newOrderInfo =new OrderInfo();
if(queryOrderList_pageBean.getList()!=null && queryOrderList_pageBean.getList().size()>0){
for (int i = 0; i < queryOrderList_pageBean.getList().size(); i++) {
newOrderInfo=(OrderInfo)queryOrderList_pageBean.getList().get(i);
getOut(out,newOrderInfo,sep);
}
}
if(totalPage>1){
for (int m = 2; m <= totalPage; m++) {
queryOrderList_pageBean = statisticsService.queryOrderListByCompanyConditions(order,
queryOrderList_currentPage, queryOrderList_pageSize);
List list =queryOrderList_pageBean.getList();
if(list!=null && list.size()>0){
for (int j = 0; j < list.size(); j++){
OrderInfo nOrderInfo=(OrderInfo)list.get(j);
getOut(out, nOrderInfo, sep);
}
}
}
}
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}public void getOut(OutputStream out,OrderInfo newOrderInfo,String sep) throws IOException{
if(!StringUtil.isNull(newOrderInfo.getOrderCard())){
out.write(String.valueOf(newOrderInfo.getOrderCard()).getBytes());
}else{
out.write(String.valueOf("订单编号为空").getBytes());
}
out.write((sep).getBytes());
if(!StringUtil.isNull(newOrderInfo.getMemberContactsPhone())){
out.write(newOrderInfo.getMemberContactsPhone().getBytes());
}else{
out.write(String.valueOf("用户联系电话为空").getBytes());
}
out.write((sep).getBytes());
if(newOrderInfo.getAddressDesc()!=null){
out.write(newOrderInfo.getAddressDesc().getBytes());
}else{
out.write(String.valueOf("联系地址为空").getBytes());
}
out.write((sep).getBytes());
if(newOrderInfo.getGenerateTime()!=null){
out.write(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(newOrderInfo.getGenerateTime()).getBytes());
}else{
out.write(String.valueOf("下单时间为空").getBytes());
}
out.write(System.getProperty("line.separator").getBytes());
}