HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet(filename);
HSSFRow row=null;
HSSFCell cell=null;
Settlement settlement=null;
//列头
row = sheet.createRow((short)(0));
cell = row.createCell((short)(0));
cell.setCellValue("订单号");
cell = row.createCell((short)(1));
cell.setCellValue("商户名");
cell = row.createCell((short)(2));
cell.setCellValue("公司名称");
cell = row.createCell((short)(3));
cell.setCellValue("下单时间");
cell = row.createCell((short)(4));
cell.setCellValue("金额");
short length=(short)list.size();
for(int i=1;i<length;i++){
settlement=(Settlement)list.get(i);
row = sheet.createRow((short)i);
cell = row.createCell((short)0);
cell.setCellValue(settlement.getOrderNum());
cell = row.createCell((short)1);
cell.setCellValue(settlement.getUsername());
cell = row.createCell((short)2);
cell.setCellValue(settlement.getCompany_name().toString());
cell = row.createCell((short)3);
cell.setCellValue(settlement.getCreatetime().toLocaleString());
cell = row.createCell((short)4);
cell.setCellValue(round(settlement.getTotal().doubleValue()/100,2));
}
row = sheet.createRow((short)(length));
cell = row.createCell((short)(0));
cell.setCellValue("合计");
cell = row.createCell((short)(1));
cell.setCellValue(round(count.doubleValue()/100,2));
//写文件
FileOutputStream fileOut = new FileOutputStream("/data/jsp/admin.yimei.com/webapps/WEB-INF/work/"+filename+".xls");
wb.write(fileOut);
fileOut.close();
//读文件
byte[] b=new byte[100];
File fileBook= new File(this.getServletContext().getRealPath("/WEB-INF/work/"+filename+".xls"));
if(!fileBook.exists()){
return;
}else{
try{
//设置输出的格式
InputStream in=new FileInputStream(fileBook);
response.reset();
response.setContentType("application/vnd.ms-excel;chartset=utf-8;charset=UTF-8");
response.addHeader("Content-Disposition","attachment; filename=\"" + fileBook.getName() + "\"");
log.info(new String(fileBook.getName().getBytes("ISO-8859-1"),"UTF-8"));
//循环取出流中的数据
int len=0;
while((len=in.read(b)) >0) {
response.getOutputStream().write(b,0,len);
}
in.close();
}catch(Exception e)
{
log.info(e.getMessage());
}
需要poi包的支持