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。
<%@page import="dao.EmlDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>删除邮件</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
int eid = Integer.parseInt(request.getParameter("eid"));
EmlDao ed = new EmlDao();
ed.delEml(eid);
%>
<script type="text/javascript">
alert("删除成功！");
</script>
<%
response.sendRedirect("main.jsp");
%>
</body>
</html>
package com.qmt.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.qmt.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()));// 系统当前时间
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);
}
}
//(测试删除邮件的代码是否编写成功)
// public static void main(String[] args) {
// MsgDao md=new MsgDao();
// md.delMail(3);
//}
// 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 import="entity.Msg"%>
<%@page import="dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.jsp' main page</title>
</head>
<body>
<%
String uname=(String)session.getAttribute("uname");
%>
欢迎你 <% out.print(uname); %> <a href="write.jsp">写邮件</a>
<table height="20px" width="100%" align="center" 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>
</tr>
<%
MsgDao md=new MsgDao();
List<Msg> list=md.getMailByReceiver(uname);
for(Msg m:list)
{%>
<tr>
<td><%=m.getUsername() %></td>
<td><a href="detail.jsp?reply=<%=m.getMsgid()%>"><%=m.getTitle() %></a></td>
<td><%
int state=m.getState();
if(state==1){ %>
<img src ="image/已读消息.png" />
<%;
}else{%>
<img src ="image/未读.png" />
<%;
}
%></td>
<td><%=m.getMsg_create_date() %></td>
<td><a href="write.jsp?reply=<%=m.getUsername()%>">回复</a></td>
<td><a href="del.jsp?id=<%=m.getMsgid()%>">删除</a></td>
</tr>
<%}
%>
</table>
</body>
</html>
package com.qmt.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class UsersDao extends BaseDao {
// 关于用户的增删改查
// 1.登录
public boolean login(String uname, String upwd) {
boolean f = false;
Connection con = getConnection();
String sql = "select * from users where uname=? and upwd=?";
PreparedStatement ps = null;
ResultSet rs = null;
try {
ps = con.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
rs = ps.executeQuery();
if (rs.next())
f = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
closeAll(con, ps, rs);
}
return f;
}
// 2.注册
public int register(String uname, String upwd) {
Connection con = getConnection();
PreparedStatement ps = null;
int x = 0;
try {
String sql = "insert into users(uname,upwd) values(?,?)";
ps = con.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
x = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally {
closeAll(con, ps, null);
}
return x;
}
}
<%@page import="entity.email"%>
<%@page import="dao.EmlDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>主界面</title>
</head>
<body>
<%
String uname = (String) session.getAttribute("uname");
%>
<h2>首页！！欢迎你<%=uname%></h2>
<table border="1">
<tr>
<th>发件人</th>
<th>主题</th>
<th>状态</th>
<th>时间</th>
<th>操作</th>
<%
EmlDao md = new EmlDao();
List<email> list = md.getEmailByAddressee(uname);
for (int i = 0; i < list.size(); i++) {
%>
<tr>
<td><%=list.get(i).getSendername()%></td>
<td><a href="show.jsp?eid=<%=list.get(i).getEid() %>"><%=list.get(i).getTitle() %></a></td>
<td>
<%
if (list.get(i).getState() == 1) {
%> <img src="images/sms_unReaded.png" /> <%
} else {
%> <img src="images/sms_readed.png" /> <%
}
%>
</td>
<td><%=list.get(i).getTotime()%></td>
<td><a href="delete.jsp?eid=<%=list.get(i).getEid()%>">删除</a></td>
<td><a href="write.jsp?reply=<%=list.get(i).getSendername()%>">回复</a></td>
</tr>
<%
}
%>
</table>
<br>
<a href="write.jsp">新建邮件</a>
</body>
</html>
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@page import="entity.Msg"%>
<%@page import="dao.MsgDao"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String uname=(String)session.getAttribute("uname");
%>
<%
request.setCharacterEncoding("utf-8");
String msgid=request.getParameter("reply");
int id=Integer.parseInt(msgid);
%>
<table height="20px" width="100%" align="center" border="1">
<tr>
<td>发件人</td>
<td>主题</td>
<td>内容</td>
<td>时间</td>
</tr>
<%
MsgDao md=new MsgDao();
Msg m=md.Cha(id);
md.updateMsg(id);
%>
<tr>
<td><%=m.getUsername() %></td>
<td><%=m.getTitle() %></td>
<td><%=m.getMsgcontent() %></td>
<td><%=m.getMsg_create_date() %></td>
</tr>
</table>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.qmt.dao.UsersDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'dologin.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
UsersDao ud = new UsersDao();
if (ud.login(uname, upwd)) {
session.setAttribute("uname",uname);
request.getRequestDispatcher("main.jsp").forward(
request,response);
} else {
out.print("登录失败，即将跳回登录页......");
response.setHeader("refresh", "3;url=login.jsp");
}
%>
</body>
</html>
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