1.第十二周上机作业（邮件功能）的控制层代码改用为servlet实现。
package com.gd.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.ResultSet;
public class BaseDao {
//获取连接
protected Connection getConnection(){
Connection conn=null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","lin0520...");
}catch(Exception e){
e.printStackTrace();
}
return conn;
}
// 关闭连接
protected void closeAll(Connection con,PreparedStatement ps,ResultSet rs){
try{
if(rs!=null)
rs.close();
if(ps!=null)
ps.close();
if(con!=null)
con.close();
}catch(SQLException e){
e.printStackTrace();
}
}
}
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{
//关于邮件的增删改查
//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(?,?,?,1,?,?)";
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);
}
}
public static void main(String[] args) {
msgDao md=new msgDao();
md.delMsg(4);
}
//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);
}
}
//根据id修改邮件状态（统一改成1）
//根据收件人查看全部邮件
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()){
//每读取一行，创建一个msg对象，对象放到集合中
msg m=new msg();
m.setMsgid(rs.getInt(1));
m.setUsername(rs.getString(2));
m.setTitle(rs.getString(3));
m.setMsgcontent(rs.getString(4));
m.setState(rs.getInt(5));
m.setSendto(rs.getString(6));
m.setMsg_create_date(rs.getDate(7));
list.add(m);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeAll(con, ps, rs);
}
return list;
}
}
package com.gd.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.gd.entity.users;
public class usersDao extends BaseDao{
//关于用户的增删改查
public boolean denglu(String uname,String upwd){
boolean f=false;
Connection conn=getConnection();
String sql=" select * from users where unmae=? and upwd=?";
PreparedStatement ps = null;
ResultSet rs= null;
try {
ps= conn.prepareStatement(sql);
ps.setString(1,uname);
ps.setString(2,upwd);
rs=ps.executeQuery();
if(rs.next())
f=true;
} catch (SQLException e) {
// TODO: handle exception
e.printStackTrace();
} finally{
closeAll(conn,ps,rs);
}
return f;
}
public void addUser(users u){
}
}
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;
private 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;
}
}
package com.gd.entity;
public class users {
int id;
String uname;
String upwd;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpwd() {
return upwd;
}
public void setUpwd(String upwd) {
this.upwd = upwd;
}
}
<%@page import="com.gd.dao.msgDao"%>
<%@page import="com.gd.entity.users"%>
<%@page import="com.gd.dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
int mid=Integer.parseInt(request.getParameter("mid"));
MsgDao md=new MsgDao();
md.delMsg(mid);
request.getRequestDispatcher("main.jsp").forward(request, response);
%>
<%@page import="com.gd.dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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{
response.sendRedirect("no.jsp");
}
%>
<%@page import="com.gd.entity.users"%>
<%@page import="com.gd.dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
String uname=request.getParameter("username");
String upwd=request.getParameter("password");
String email=request.getParameter("email");
usersDao ud=new usersDao();
users u=new users(uname,upwd,email);
ud.register(u);
response.sendRedirect("login.jsp");
%>
<%@page import="com.gd.dao.msgDao"%>
<%@page import="com.gd.entity.msg"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
String title = request.getParameter("title");
String content = request.getParameter("content");
String receiver = request.getParameter("sendto");
String sender = (String) session.getAttribute("uname");
msg m = new msg();
m.setSendto(receiver);
m.setUname(sender);
m.setTitle(title);
m.setMsgcontent(content);
msgDao md = new msgDao();
md.writeMsg(m);
request.getRequestDispatcher("main.jsp").forward(request, response);
%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="dologin.jsp" method="post">
用户名:<input type="text" name="uname" value="ls" /><Br>
密码 ：<input type="password" name="upwd" value="456"/><br>
<input type="submit" value="登录">
<a href="register.jsp" >注册</a>
</form>
</body>
</html>
<%@page import="com.gd.entity.msg"%>
<%@page import="com.gd.dao.msgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
</head>
<body>
<%
msgDao md = new msgDao();
String uname = (String) session.getAttribute("uname");
List<msg> list = md.getReceive(uname);
%>
欢迎你<%=uname%> <a href="write.jsp">写邮件</a>
<table border="1">
<tr>
<td>标题 </td>
<td>是否已读</td>
<td>发件人</td>
<td>时间</td>
<td>操作</td>
<td>操作</td>
</tr>
<%for(int i=0;i<list.size();i++){ %>
<tr>
<td><a href="readMsg.jsp?mid=<%=list.get(i).getMsgid()%>"><%=list.get(i).getTitle() %></a></td>
<td><%int x=list.get(i).getState();
if(x==0){%>
<img src="images/sms_readed.png">
<%}else{ %>
<img src="images/sms_unReaded.png">
<%} %>
</td>
<td><%=list.get(i).getUname() %></td>
<td><%=list.get(i).getMsg_create_date() %></td>
<td><a href="dodel.jsp?mid=<%=list.get(i).getMsgid()%>">删除</a></td>
<td><a href="write.jsp?reply=<%=list.get(i).getUname()%>">回复</td>
</tr>
<%} %>
</table>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
登录失败。
</body>
</html>
<%@page import="com.gd.entity.msg"%>
<%@page import="com.gd.dao.msgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>读短消息</title>
</head>
<body>
<div id="main">
<div class="mainbox">
<div class="title readMessage png"></div>
<div class="menu">
<span>当前用户：<a href="main.jsp">${sessionScope.loginuser}</a></span>
<span><a href="UserServlet?action=findUsers">发短消息</a></span>
<span><a href="UserServlet?action=logout">退出</a></span>
</div>
<div class="content">
<div class="message">
<%
int mid=Integer.parseInt(request.getParameter("mid"));
msgDao md=new msgDao();
msg m=md.getMsgById(mid);
md.updateMsg(mid);
%>
發件人<%=m.getUname() %><br>
发件时间<%=m.getMsg_create_date() %><br>
标题：<%=m.getTitle() %><br>
详情：<%=m.getMsgcontent() %><br>
</div>
<a href="write.jsp?reply=<%=m.getUname()%>">回复</a>
<a href="main.jsp">返回首页</a>
</div>
</div>
</div>
</div>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<head>
<title>学士后 在线短信平台</title>
<link type="text/css" rel="stylesheet" href="css/sms.css" />
<script type="text/javascript" src="scripts/jquery.js"></script>
</head>
<script type="text/javascript">
function check(){
var username = document.getElementById("username");
var password = document.getElementById("password");
var affirm = document.getElementById("affirm");
var email = document.getElementById("email");
if(username.value == ""){
alert("用户名不能为空！");
return false;
}else if(password.value == ""){
alert("密码不能为空！");
return false;
}else if(password.value != affirm.value){
alert("两次密码不同！");
return false;
}else if(email.value == ""){
alert("邮箱不能为空！");
return false;
}
return true;
}
</script>
<body>
<div id="regTitle" class="png"></div>
<div id="regForm" class="userForm png">
<form action="doreg.jsp" method="post">
<dl>
<dt>用 户 名：</dt>
<dd><input type="text" name="username" /></dd>
<dt>密 码：</dt>
<dd><input type="password" name="password" /></dd>
<dt>确认密码：</dt>
<dd><input type="password" name="affirm" /></dd>
<dt>邮 箱：</dt>
<dd><input type="text" name="email" /></dd>
</dl>
<div class="buttons">
<input type="submit" name="register" value="注册 " /><input type="reset" name="reset" value="重置 " />
</div>
<div class="goback"><a href="index.jsp" class="png">返回登录页</a></div>
</form>
</div>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
注册成功，<a href="login.jsp">返回到登录页面</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="dowrite.jsp" method="post">
收件人：<input type="text" name="sendto" value="<%=request.getParameter("reply") %>" ><br>
主题:<input type="text" name="title"><br>
内容:<textarea name="content"></textarea>
<input type="submit" value="发送">
</form>
</body>
</html>
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