Java导出页面数据或数据库数据至Excel文件并下载，采用JXL技术，小demo（servlet实现）

public class ExportExcelServlet extends HttpServlet {



    /**

     * 

     */

    private static final long serialVersionUID = 1L;



    @Override

    protected void doGet(HttpServletRequest req, HttpServletResponse resp)

            throws ServletException, IOException {

        doPost(req, resp);

    }



    @Override

    protected void doPost(HttpServletRequest request,

            HttpServletResponse response) throws ServletException, IOException {

        try {

            HttpSession session = request.getSession();

            List<ScUser> users = new ArrayList<ScUser>();

            users =(List<ScUser>) session.getAttribute("users");

            OutputStream os = response.getOutputStream();

            response.setContentType("application/vnd.ms-excel");

            response.setCharacterEncoding("utf-8");

            WritableWorkbook book = Workbook.createWorkbook(os);

            WritableSheet sheet = book.createSheet("用户管理表", 0);

            String title[] = { "号码", "部门", "使用人", "口令","IP地址","mac地址","状态" };

            for (int i = 0; i < title.length; i++) {

                Label labe = new Label(i, 0, title[i]);

                sheet.addCell(labe);

            }

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

                ScUser scuser=users.get(i);

                long id=scuser.getId();

                String dept =scuser.getDept();

                String name=scuser.getUsername();

                String pwd=scuser.getPassword();

                String ip=scuser.getUserIP();

                String mac=scuser.getMAC();

                String status=scuser.getStatus()+"";

                if(status.equals("F")){

                    status="启用";

                }else{

                    status="禁用";

                }

                String[] contents={id+"",dept,name,pwd,ip,mac,status};                

                for(int j=0;j<contents.length;j++){

                Label labe=new Label(j,i+1,contents[j]);

                sheet.addCell(labe);

                }



            }

            book.write();

            book.close();



            os.flush();

        } catch (Exception e) {

            e.printStackTrace();

        }



    }



}

 提示：需要jxl的jar包及示例程序（百度网盘）：链接：http://pan.baidu.com/s/1dKvV4 密码：io6w