jsp第十二周作业

1.实现 删除 回复邮件

复制代码
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 entity.Msg;

public class MsgDao extends BaseDao {
    // 根据姓名查看所有邮件
    public List<Msg> getMailByReceiver(String name) {
        List<Msg> list = new ArrayList<Msg>();
        Connection con = getConnection();
        String sql = "select * from msg where sendto=?";
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, name);
            rs = ps.executeQuery();
            while (rs.next()) {
                Msg m = new Msg();
                m.setMsgid(rs.getInt("msgid"));
                m.setUsername(rs.getString("username"));
                m.setTitle(rs.getString("title"));
                m.setState(rs.getInt("state"));
                m.setMsgcontent(rs.getString("msgcontent"));
                m.setSendto(rs.getString("sendto"));
                m.setMsg_create_date(rs.getDate("mgs_create_date"));
                list.add(m);
            }

        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(con, ps, rs);
        }
        return list;
    }
复制代码
复制代码
  public void addMsg(Msg m) {
        Connection conn = getConnection();
        String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,0,?,?)";
        PreparedStatement ps = null;
        try {
            ps = conn.prepareStatement(sql);
            ps.setString(1, m.getUsername());
            ps.setString(2, m.getTitle());
            ps.setString(3, m.getMsgcontent());
            ps.setString(4, m.getSendto());
            ps.setDate(5, new java.sql.Date(new Date().getTime()));
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, null);
        }
    }

    // 根据id删除邮件
复制代码
复制代码
 public void delMsg(int id) {
        Connection con = getConnection();
        String sql = "delete from msg where msgid=" + id;
        PreparedStatement ps = null;
        try {
            ps = con.prepareStatement(sql);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(con, ps, null);
        }

    }

    // 查看信息之后状态变为已读
复制代码
复制代码
 public void updateMsg(int id) {
        Connection con = getConnection();
        String sql = "update msg set state='1' where msgid=?";
        PreparedStatement pred = null;
        try {
            pred = con.prepareStatement(sql);
            pred.setInt(1, id);
            pred.executeUpdate();
        } catch (SQLException e1) {
            e1.printStackTrace();
        } finally {
            closeAll(con, pred, null);
        }
    }

    // 查看详细信息
   
复制代码
复制代码
public void updateMsg(int id) {
        Connection con = getConnection();
        String sql = "update msg set state='1' where msgid=?";
        PreparedStatement pred = null;
        try {
            pred = con.prepareStatement(sql);
            pred.setInt(1, id);
            pred.executeUpdate();
        } catch (SQLException e1) {
            e1.printStackTrace();
        } finally {
            closeAll(con, pred, null);
        }
    }

    // 查看详细信息
    public Msg Cha(int msgid) {
        Msg m = null;
        Connection con = getConnection();
        ResultSet rs = null;
        PreparedStatement ps = null;
        String sql = "select * from msg where msgid=?";
        try {
            ps = con.prepareStatement(sql);
            ps.setInt(1, msgid);
            rs = ps.executeQuery();
            while (rs.next()) {
                m = new Msg();
                m.setMsgid(rs.getInt("msgid"));
                m.setUsername(rs.getString("username"));
                m.setTitle(rs.getString("title"));
                m.setMsgcontent(rs.getString("msgcontent"));
                m.setState(rs.getInt("state"));
                m.setSendto(rs.getString("sendto"));
                m.setMsg_create_date(rs.getDate("mgs_create_date"));
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(con, ps, rs);
        }
        return null;
    }
}
复制代码

 


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。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.wan.entity.Msg"%>
<%@ page import="com.wan.dao.MsgDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'main.jsp' starting page</title>
 
</head>
 
<body bgcolor=#ffccff>
    <%
        String uname = (String) session.getAttribute("uname");
    %>
    欢迎你<%
        out.print(uname);
    %>使用邮箱
    <hr>
    <a href="write.jsp">写邮件</a>
    <table border="1">
        <tr>
            <td>发件人</td>
            <td>标题</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><a href="detail.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getMsgcontent() %></a>
            </td>
            <td>
                <%
                    if (list.get(i).getState() == 1) {
                %> <img  src="image/unread.png"/>
                <%
                    else {
                %><img  src="image/read.png"/> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <td><a href="delete.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>

  

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'write.jsp' starting page</title>
 
</head>
 
<body>
    <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> <a
            href="main.jsp">返回</a>
 
    </form>
 
</body>
</html>

  

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.wan.entity"%>
<%@ page import="com.wan.dao"%>
<%@ page import="com.wan.dao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'dowrite.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>

  

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.wan.entity"%>
<%@ page import="com.wan.dao%>
<%@ page import="com.wan.dao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'detail.jsp' starting page</title>
     
  </head>
   
  <body>
    <body>
    <%
        request.setCharacterEncoding("utf-8");
        String msgid = request.getParameter("id");
        int idd = Integer.parseInt(msgid);
        MsgDao md = new MsgDao();
        md.update(idd);
        Msg m =md.read(idd);
    %>
    <table>
        <tr>
            <td>发件人:</td>
            <td><input type="text" name="username" style="border: none"
                value="<%=m.getUsername()%>">
            </td>
        </tr>
        <tr>
            <td>主题:</td>
            <td><input type="text" name="title" style="border: none"
                value="<%=m.getTitle()%>">
            </td>
        </tr>
        <tr>
            <td>时间:</td>
            <td><input type="text" name="msg_create_date" style="border: none"
                value="<%=m.getMsg_create_date()%>">
            </td>
        </tr>
        <tr>
            <td>收件人:</td>
            <td><input type="text" name="sendto" style="border: none"
                value="<%=m.getSendto()%>">
            </td>
        </tr>
        <tr>
            <td>内容:</td>
            <td><div style="border: none;outline: none;overflow: inherit;">
                    <%=m.getMsgcontent()%></div>
            </td>
        </tr>
    </table>
    <br>
    <a href="main.jsp">返回</a>
</body>
  </body>
</html>

  

 

 

 

 

 

posted @ 2022-07-03 22:04  欧阳晨  阅读(2)  评论(0编辑  收藏  举报