public void exportCSVFile(

	HttpServletResponse response, ResultSet rs,String fileName,String headers) throws SQLException {

		OutputStream o = null;

		try {

//			String headers = "用户名, 操作时间, 操作模块, 操作内容";// 标题

			headers += "\n";

			List<Log> logList = new ArrayList<Log>();

			Log logs = null;

			while (rs.next()) {

				logs = new Log();

				logs.setUser(rs.getString(1));

				logs.setDatetime(rs.getString(2));

				logs.setModule(rs.getString(3));

				logs.setContent(rs.getString(4));

				logList.add(logs);

			}

			if (logList.size() > 0) {

				for (int i = 0; i < logList.size(); i++) {

					Log logs1 = logList.get(i);

					headers += logs1.getUser() + ",";

					headers += logs1.getDatetime() + ",";

					headers += logs1.getModule() + ",";

					headers += logs1.getContent();

					headers += "\n";

				}

				Date d = new Date();

				SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");

				String dateNowStr = sdf.format(d);

//				String fileNames = "导出操作日志数据" + dateNowStr+".csv";

				String fileNames = fileName + dateNowStr+".csv";

				System.out.println(fileNames);

				response.setContentType("application/download;charset=GBK");

				response.setContentType("Content-type:application/vnd.ms-excel;charset=GBK");

				response.setHeader("Content-Disposition", "attachment;filename="

						+ new String(fileNames.getBytes("utf-8"), "iso8859-1"));// 设置头信息

				o = response.getOutputStream();

				o.write(headers.toString().getBytes("GBK"));

			}

		} catch (IOException e) {

			e.printStackTrace();

		} finally {

			if (o != null) {

				try {

					o.close();

				} catch (IOException e) {

					// TODO Auto-generatedcatch block

					e.printStackTrace();

				}

			}

		}

	}