jsp頁面實現增刪修改和查詢

時間 2019-11-12

標籤 jsp 頁面實現增刪修改查詢欄目 JSP 简体版

原文原文鏈接

1,增長html

　　1-1：<body>
    <form action="AnnouncementAdd.jsp" method="post">
       <h2>新增</h2>
       公告標題：<input type="text" name="title"><br/>
       公告內容：<input type="text" name="context"><br>
       <input type="submit" value="新增">
    </form>jsp

　　1-2：<body>

    <%
       request.setCharacterEncoding("utf-8");
       response.setCharacterEncoding("utf-8");
       String title=request.getParameter("title");
       String context=request.getParameter("context");
       AnnouncementDaoImplement ad=new AnnouncementDaoImplement();
       Announcement an=new Announcement();
       an.setTitle(title);
       an.setContext(context);
       boolean bn=ad.addAnnouncement(an);
       if(bn){
           response.sendRedirect("AnnouncementSelectAll.jsp");
       }else{
           out.print("添加失敗了");
           out.print("<a href='AnnouncementSelectAll.jsp'>返回原來的頁面</a>");
       }
    %>
</body>post

2.刪除spa

　　<body>
    <%
    String str=request.getParameter("id");
    AnnouncementDaoImplement ad=new AnnouncementDaoImplement();
    boolean bn=ad.deleteAnnouncement(Integer.parseInt(str));
    if(bn){
       response.sendRedirect("AnnouncementSelectAll.jsp");
    }else{
       out.print("刪除失敗了");
       out.print("<a href='AnnouncementSelectAll.jsp'>回到原來的頁面</a>");
    }
    %>
</body>orm

3.查詢htm

　　 <body>
<table align="center" width="50%" border="1" cellpadding="1" cellspacing="1">
        <tr>
           <th>公告編號</th>
           <th>公告標題</th>
           <th>公告內容</th>
           <th>操做</th>
       </tr>
    <%
       AnnouncementDaoImplement ad=new AnnouncementDaoImplement();
       List<Announcement> list= ad.selectAll();
       for(Announcement an:list){
    %>


       <tr align="center">
           <td><%=an.getId()%></td>
           <td><%=an.getTitle()%></td>
           <td><%=an.getContext() %></td>
           <td><a href="AnnouncementDel.jsp?id=<%=an.getId()%>">刪除</a>||
           <a href="AnnouncementUpdate.jsp?id=<%=an.getId()%>">修改</a></td>

       </tr>

    <%} %>
    </table>
    <h3><a href="AnnouncementAdd.html">新增</a></h3>
</body>utf-8

　4.修改ci

4-1 <body>
   <%
       int in=Integer.parseInt(request.getParameter("id"));
       AnnouncementDaoImplement an=new AnnouncementDaoImplement();
       Announcement ann=an.selectAnnouncement(in);
       if(ann instanceof Announcement){%>
           <form action="AnnouncementUpdate2.jsp" method="post">
           <p>公告編號：<input type="text" size="60" name="upid" value="<%=ann.getId()%>" readonly="readonly"></p>
           <p>公告標題:<input type="text" size="60" name="title" value="<%=ann.getTitle()%>"</p>
           <p>公告內容：<input type="text" size="60"name="context" value="<%=ann.getContext()%>"</p>
           <p><input type="submit" value="修改"/></p>
           </form>
       <% }else{
           out.print("刪除失敗了");
           out.print("<a href='AnnouncementSelectAll.jsp'>回到原來的頁面</a>");
       }
   %>

</body>get

4-2input

<body> <% String id=request.getParameter("upid"); String title=request.getParameter("title"); String context=request.getParameter("context"); AnnouncementDaoImplement ad=new AnnouncementDaoImplement(); Announcement an=new Announcement(); an.setId(Integer.parseInt(id)); an.setTitle(title); an.setContext(context); ad.updateAnnouncement(an); boolean bn=ad.updateAnnouncement(an); if(bn){ response.sendRedirect("AnnouncementSelectAll.jsp"); }else{ out.print("修改失敗了"); out.print("<a href='AnnouncementSelectAll.jsp'>回到原來的頁面</a>"); } %> </body>

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