Java导出，下载excel
Java读取excel内容：
public class excel {
public static void main(String[] args) throws BiffException, IOException {
// TODO Auto-generated method stub
Workbook book = Workbook.getWorkbook(new File(
"C://Test.xls"));
Sheet sheet = book.getSheet(0);
List<String> list = new ArrayList<String>();
for (int k = 0; k < 5; k++) {
for (int j = 0; j < 5; j++) {
Cell cell = sheet.getCell(j, k);// 列,行
Cell keycell = sheet.getCell(j, 1);
String Content = cell.getContents();
list.add(Content);
}
}
for (String string : list) {
System.out.println(string);
}
book.close();
}
}
Java导出excel：
String filePath = "D:\\java\\myeclipse\\goodtaste_system"
+ "/upload/OrderRecord" + dateTime + ".xls";
filePath = request.getSession().getServletContext()
.getRealPath(ConstantFiled.UPLOAD)
+ "/OrderRecord" + dateTime + ".xls";
OutputStream os = new FileOutputStream(filePath);
book = Workbook.createWorkbook(os);
WritableSheet sheet = book.createSheet("订单", 0);
WritableFont wfont = new WritableFont(WritableFont.ARIAL, 11,
WritableFont.BOLD, false,
jxl.format.UnderlineStyle.NO_UNDERLINE,
jxl.format.Colour.BLACK);
WritableCellFormat titleFormat = new WritableCellFormat(wfont);
String[] title = { "订单号", "桌号", "点餐时间", "结账时间", "消费人数", "总价" };
for (int i = 0; i < title.length; i++) {
Label excelTitle = new Label(i, 0, title[i], titleFormat);
sheet.addCell(excelTitle);
}
List<Order> list = new ArrayList<Order>();
list = this.getOrderService()
.getAllOrdersByDateTime(dateTime + "%");
if (!list.isEmpty()) {
for (int i = 0; i < list.size(); i++) {
sheet.addCell(new Label(0, i + 1, list.get(i).getOrderId()));
sheet.addCell(new Label(1, i + 1, list.get(i).getTableNum()));
sheet.addCell(new Label(2, i + 1, sdf.format(list.get(i)
.getOrderTime())));
sheet.addCell(new Label(3, i + 1, sdf.format(list.get(i)
.getAccountTime())));
sheet.addCell(new Label(4, i + 1, String.valueOf(list
.get(i).getConsmNums())));
sheet.addCell(new Label(5, i + 1, list.get(i)
.getTotalPrice()));
}
}
book.write();
Java下载文件：
String path = "D:\\java\\myeclipse\\goodtaste_system"
+ "/upload/OrderRecord" + dateTime + ".xls";
path = request.getSession().getServletContext()
.getRealPath(ConstantFiled.UPLOAD)
+ "/OrderRecord" + dateTime + ".xls";
File file = new File(path);
String filename = file.getName();
String ext = filename.substring(filename.lastIndexOf(".") + 1)
.toUpperCase();
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
response.addHeader("Content-Disposition", "attachment;filename="
+ new String(filename.getBytes()));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(
response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();