/* * To change this template, choose Tools | Templates * and open the template in the editor. */package com.ebook.servlet;import java.util.*;import java.io.*;import javax.servlet.*;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.ebook.Entity.*;import com.ebook.impl.*;import com.ebook.Util.*;import javax.servlet.http.HttpSession;public class NoteServlet extends HttpServlet {    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        String action = request.getParameter("action");        if (action.equals("addnote")) {            addNote(request, response);        } else if (action.equals("shownote")) {            showNote(request, response);        }    }    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doGet(request, response);    }    public void showNote(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        try {            int currentpage=1;            if(request.getParameter("cpage")!=null)            {              currentpage=Integer.parseInt(request.getParameter("cpage"));            }           NoteImpl ni = new NoteImpl(new JdbcCon().getCon());            List list = ni.getNote();            PageHoder ph = new PageHoder(list, 5);            List pagelist = ph.getCurrentList(currentpage);            int allpages = ph.getPageNumber(5);            request.setAttribute("currentpage", currentpage);            request.setAttribute("allpages", allpages);            request.setAttribute("list", pagelist);            request.getRequestDispatcher("getNote.jsp").forward(request, response);        } catch (Exception e) {            e.printStackTrace();        }    }    public void addNote(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        try {            request.setCharacterEncoding("UTF-8");            HttpSession session = request.getSession();            User user = (User) session.getAttribute("user");            if (user == null) {                request.setAttribute("error", "對不起你還沒有登錄");                request.getRequestDispatcher("error.jsp").forward(request, response);            }            Note note = new Note();            note.setUserid(user.getId());            note.setUsername(user.getName());            note.setContent(request.getParameter("content"));            NoteImpl ni = new NoteImpl(new JdbcCon().getCon());            ni.addNote(note);          /*  ArrayList list = ni.getNote();            request.setAttribute("list", list);            request.getRequestDispatcher("getNote.jsp").forward(request, response);*/            response.sendRedirect("/eBook/NoteServlet?action=shownote");        } catch (Exception e) {            e.printStackTrace();        }    }}