JS第12周作业
1.实现 删除 回复邮件
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; }
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 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;
}
}
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 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>
<%@ 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>
<%@ 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>
<%@ 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>
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