第十二周 作业

1.实现 删除 回复邮件
2.实现阅读邮件功能：在main.jsp中点击任意邮件的标题，进入到detail.jsp显示邮件详情，包括发件人，主题，内容，时间。同时需要把邮件状态修改为已读。

package com.gd.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.gd.entity.Msg;

public class MsgDao extends BaseDao{
    
    //插入邮件
    public void addMsg(Msg m){
        Connection conn=getConnection();
        String sql="insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?)";
        PreparedStatement ps=null;
        try {
            ps=conn.prepareStatement(sql);
            ps.setString(1, m.getUsername());
            ps.setString(2, m.getTitle());
            ps.setString(3, m.getMsgcontent());
            ps.setInt(4, 1);
            ps.setString(5, m.getSendto());
            ps.setDate(6, new java.sql.Date(new Date().getTime()));
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            closeAll(conn,ps,null);
        }
    }
    
    //删除邮件
    public void delMail(int id){
        Connection conn=getConnection();
        String sql="delete from msg where msgid=?";
        PreparedStatement ps=null;
        try {
            ps=conn.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, null);
        }
        
    }
    
    
    
    //按照接收者查询全部邮件
    public List<Msg> getMailByReceiver(String name){
        List<Msg> list=new ArrayList<Msg>();
        Connection conn=getConnection();
        String sql="select * from msg where sendto=?";
        PreparedStatement ps=null;
        ResultSet rs=null;
        try {
            ps=conn.prepareStatement(sql);
            ps.setString(1, name);
            rs=ps.executeQuery();
            while(rs.next()){
                Msg m=new Msg();
                m.setMsgid(rs.getInt(1));
                m.setUsername(rs.getString(2));
                m.setTitle(rs.getString(3));
                m.setMsgcontent(rs.getString(4));
                m.setState(rs.getInt(5));
                m.setSendto(rs.getString(6));
                m.setMsg_creat_date(rs.getDate(7));
                list.add(m);
            }
        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            closeAll(conn,ps,rs);
        }
        return list;
    }

}
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>
 
    <title>main</title>

  </head>
  
  <body>
    <%String uname=(String)session.getAttribute("uname"); %>
    欢迎<%=uname %>
    <table border="1">
    <tr>
    <td>发件人</td> <td>主题</td> <td>状态</td> <td>时间</td>
    <td>操作</td><td>操作</td>
    
    
    <%
    MsgDao md=new MsgDao();
    List<Msg> list=md.getMailByReceiver(uname);    
    for(int i=0;i<list.size();i++){   
     %>
     
     
     <tr>
     <td><%=list.get(i).getUsername()%></td>
     <td><%=list.get(i).getTitle() %></td>
     <td><%if(list.get(i).getState()==1){
     out.print("<img src='img/1.png'></img>");     
     }else{
      out.print("<img src='img/0.png'></img>");
     }     
     %></td>
     <td><%=list.get(i).getMsg_creat_date()%></td>
     <td><a href="dele.jsp?id=<%=list.get(i).getMsgid()%>">删除</a> </td>
     <td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a> </td>
     </tr>
     <%} %>
    
    </table>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>    
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  
  <body>
    
    <form  name="form" action="dowrite.jsp" method="post">
      收件人：<input type="text" name="receiver" value="<%=request.getParameter("reply")%>"><br>
      主题：<input type="text" name="title"><br>
      内容：<textarea rows="6" cols="20" name="content"></textarea><br>
        <input type="submit" value="发送">    <br>
        </form>
  </body>
</html>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.entity.Msg"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>    
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  
  <body>
    <%
    request.setCharacterEncoding("utf-8");
    String uname=(String)session.getAttribute("uname");
    String sendto=request.getParameter("receiver");
    String title=request.getParameter("title");
    String content=request.getParameter("content");
    
    Msg m=new Msg();
    m.setMsgcontent(content);
    m.setUsername(uname);
    m.setSendto(sendto);
    m.setTitle(title);
    
    MsgDao md=new MsgDao();
    md.addMsg(m);
    
    out.print("发送成功");
    response.setHeader("refresh", "3;url=main.jsp");
     %>
  </body>
</html>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>

<body>
    <%
        request.setCharacterEncoding("utf-8");

        int id = Integer.parseInt(request.getParameter("id"));
        MsgDao md = new MsgDao();
        md.delMail(id);
        out.print("刪除成功.....");
        response.setHeader("refresh", "2;url=main.jsp");
    %>
</body>
</html>

 

 

 

 

 

 

 

 

 

posted @ 2022-05-20 13:36  请叫我妖玉大侠  阅读(21)  评论(0)  编辑  收藏  举报