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。
MsgDao
package com.yxf.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.yxf.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;
}
// 添加邮件(写邮件，回复邮件都调用，邮件状态为1(未读)，时间为系统当前时间)
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
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
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 m;
}
}
main.jsp
<%@page import="com.yxf.entity.Msg"%>
<%@page import="com.yxf.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 ="images/sms_readed.png" />
<%;
}else{%>
<img src ="images/sms_unReaded.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>
write.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title></title>
</head>
<body>
<form action="dowrite.jsp" method="post">
<table>
<tr>
<td>收件人</td>
<td><input type="text" name="sendto"
value="<%=request.getParameter("reply")%>"></td>
</tr>
<tr>
<td>主题</td>
<td><input type="text" name="title"></td>
</tr>
<tr>
<td>内容</td>
<td><textarea rows="6" cols="20" name="content"></textarea></td>
</tr>
<tr>
<td><input type="submit" value="发送"></td>
</tr>
</table>
</form>
<a href="main.jsp">返回</a>
</body>
</html>
dowrite.jsp
<%@page import="com.yxf.dao.MsgDao"%>
<%@page import="com.yxf.entity.Msg"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title></title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
Msg e = new Msg();
String username = (String) session.getAttribute("uname");
e.setUsername(username);
String sendto = request.getParameter("sendto");
e.setSendto(sendto);
String title = request.getParameter("title");
e.setTitle(title);
String msgcontent = request.getParameter("msgcontent");
e.setMsgcontent(msgcontent);
MsgDao md = new MsgDao();
md.addMsg(e);
out.print("发送成功，即将跳回首页...");
response.setHeader("refresh", "1;url=main.jsp");
%>
</body>
</html>
look.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title></title>
</head>
<%@ page import="com.yxf.dao.MsgDao"%>
<body>
<%
String Id = request.getParameter("id");
int msgid = Integer.parseInt(Id);
MsgDao md = new MsgDao();
md.xiugai(msgid);
out.println(md.chakan(msgid));
%>
<br>
<a href="main.jsp">返回</a>
</body>
</html>
delete.jsp
<%@page import="com.yxf.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title></title>
</head>
<body>
<%
try {
String msgid = request.getParameter("msgid");
int msgId = Integer.parseInt(msgid);
MsgDao md = new MsgDao();
if (md.deleteMsg(msgId) != -1) {
out.println("删除成功!");
out.println("即将跳转到主页面...");
response.setHeader("refresh", "1;url=main.jsp");
} else {
out.println("删除失败！");
out.println("即将跳转到主页面...");
response.setHeader("refresh", "1;url=main.jsp");
}
} catch (Exception e) {
e.printStackTrace();
}
%>
</body>
</html>
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