?? noteservlet.java
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/* * 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(); } }}
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