Seam 페이지 Excel 내보내기

	public void exportData() {
		FacesContext ctx = FacesContext.getCurrentInstance();
		ctx.responseComplete();
		HttpServletResponse response = (HttpServletResponse) ctx
				.getExternalContext().getResponse();
		response.reset();
		response.setContentType("application/vnd.ms-excel");
		WritableWorkbook wwb = null;
		try {
			wwb = Workbook.createWorkbook(response.getOutputStream());
		} catch (IOException e) {
			e.printStackTrace();
		}
		if (wwb != null) {
			WritableSheet ws = wwb.createSheet("sheet1", 0);

			for (int i = 0; i < incomeTaxList.size(); i++) {
				try {
					ws.addCell(new Label(0, i, incomeTaxList.get(i)
							.getSalaryStart().toString()
							+ "~"
							+ incomeTaxList.get(i).getSalaryEnd().toString()));
					ws.addCell(new Label(1, i, incomeTaxList.get(i).getTax0()
							.toString()));
					ws.addCell(new Label(2, i, incomeTaxList.get(i).getTax1()
							.toString()));
					ws.addCell(new Label(3, i, incomeTaxList.get(i).getTax2()
							.toString()));
					ws.addCell(new Label(4, i, incomeTaxList.get(i).getTax3()
							.toString()));
					ws.addCell(new Label(5, i, incomeTaxList.get(i).getTax4()
							.toString()));
					ws.addCell(new Label(6, i, incomeTaxList.get(i).getTax5()
							.toString()));
					ws.addCell(new Label(7, i, incomeTaxList.get(i).getTax6()
							.toString()));
					ws.addCell(new Label(8, i, incomeTaxList.get(i).getTax7()
							.toString()));
					ws.addCell(new Label(9, i, incomeTaxList.get(i).getTax8()
							.toString()));
					ws.addCell(new Label(10, i, incomeTaxList.get(i).getTax9()
							.toString()));
					ws.addCell(new Label(11, i, incomeTaxList.get(i).getTax10()
							.toString()));
					ws.addCell(new Label(12, i, incomeTaxList.get(i).getTax11()
							.toString()));
				} catch (RowsExceededException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (WriteException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

			try {
				wwb.write();
				wwb.close();
			} catch (IOException e) {
				e.printStackTrace();
			} catch (WriteException e) {
				e.printStackTrace();
			}
		}
	}