JSP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.entity;import java.util.Date;public class Msg {    private int msgid;    private String username;    private String title;    private String msgcontent;    private int state;    private String sendto;    Date msg_create_date;    public int getMsgid() {        return msgid;    }    public void setMsgid(int msgid) {        this.msgid = msgid;    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getTitle() {        return title;    }    public void setTitle(String title) {        this.title = title;    }    public String getMsgcontent() {        return msgcontent;    }    public void setMsgcontent(String msgcontent) {        this.msgcontent = msgcontent;    }    public int getState() {        return state;    }    public void setState(int state) {        this.state = state;    }    public String getSendto() {        return sendto;    }    public void setSendto(String sendto) {        this.sendto = sendto;    }    public Date getMsg_create_date() {        return msg_create_date;    }    public void setMsg_create_date(Date msg_create_date) {        this.msg_create_date = msg_create_date;    }        public Msg(int msgid, String username, String title, String msgcontent,            int state, String sendto, Date msg_create_date) {        super();        this.msgid = msgid;        this.username = username;        this.title = title;        this.msgcontent = msgcontent;        this.state = state;        this.sendto = sendto;        this.msg_create_date = msg_create_date;    }            public Msg() {        super();    }    @Override    public String toString() {        return "Msg [msgid=" + msgid + ", username=" + username + ", sendto=" + sendto + ", title="                + title + ", msg_create_date=" + msg_create_date + ", state=" + state + ", msgcontent="                + msgcontent + "]";    }}

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 {    // 1，插入邮件    public void addMsg(Msg m) {        Connection con = getConnection();        String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?)";        PreparedStatement ps = null;        try {            ps = con.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 Auto-generated catch block            e.printStackTrace();        } finally {            closeAll(con, ps, null);        }    }    // 2.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 (SQLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }finally{            closeAll(conn, ps, null);        }    }    // 3.修改邮件状态    public void update(int id) {        Connection con = getConnection();        String sql = "update  msg set state='1' where msgid=?";        PreparedStatement ps = null;        try {            ps = con.prepareStatement(sql);            ps.setInt(1, id);            ps.executeUpdate();        } catch (SQLException e) {            e.printStackTrace();        } finally {            closeAll(con, ps, null);        }    }    // 4.按照接收者查询全部邮件    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.setMsgcontent(rs.getString("msgcontent"));                m.setState(rs.getInt("state"));                m.setSendto(rs.getString("sendto"));                m.setMsg_create_date(rs.getDate("msg_create_date"));                list.add(m);            }        } catch (SQLException e) {            e.printStackTrace();        }finally{            closeAll(con, ps, rs);        }        return list;    }    //5.实现阅读邮件功能    public Msg read(int id) {        Connection con = getConnection();        String sql = "select msgid,username,sendto,title,msgcontent,msg_create_date from msg where msgid=?";        PreparedStatement ps = null;        ResultSet rs = null;        try {            ps = con.prepareStatement(sql);            ps.setInt(1, id);            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.setMsgcontent(rs.getString("msgcontent"));                m.setSendto(rs.getString("sendto"));                m.setMsg_create_date(rs.getDate("msg_create_date"));                return m;            }        } catch (SQLException e) {            e.printStackTrace();        } finally {            closeAll(con, ps, rs);        }        return null;    }}

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ page import="com.gd.entity.Msg"%><%@ page import="com.gd.dao.MsgDao"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>My JSP 'main.jsp' starting page</title></head><body>    <%        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/weidu.webp"/>                <%                    } else {                %><img  src="image/yidu.webp"/> <%     } %>            </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>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><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>

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

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ page import="com.gd.entity.Msg"%><%@ page import="com.gd.dao.MsgDao"%><%@ page import="com.gd.dao.UsersDao"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>My JSP 'delete.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");        //response.sendRedirect("main.jsp");    %></body></html>

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