第13周作业
.第十二周上机作业（邮件功能）的控制层代码改用为servlet实现。
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package com.sjw.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
public class BaseDao {
//获取连接
protected Connection getConnection(){
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
// 2.建立连接
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/test", "root", "123456");
} 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.sjw.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.sjw.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;
}
}
package com.sjw.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.sjw.entity.Users;
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;
}
}
package com.sjw.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.sjw.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;
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.jms.Session;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.sjw.dao.UsersDao;
import com.sjw.entity.Users;
@WebServlet("/dologin.do")
public class DoLogin extends HttpServlet {
/**
* Constructor of the object.
*/
public DoLogin() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html,charset=utf-8");
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String password = request.getParameter("password");
Users ud = new Users();
HttpSession session = request.getSession();
PrintWriter out = response.getWriter();
if (ud.Login(uname, password)) {
session.setAttribute("uname", uname);
request.getRequestDispatcher("index.jsp").forward(request, response);
} else {
out.print("登录失败，即将调回登录页.....");
response.setHeader("refresh", "2;url=login.jsp");
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sjw.dao.UsersDao;
public class DoRegister extends HttpServlet {
/**
* Constructor of the object.
*/
public DoRegister() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html,charset=utf-8");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
String rupwd = request.getParameter("rupwd");
if (upwd.equals(rupwd)) {
UsersDao ud = new UsersDao();
ud.register(uname, upwd);
out.print("注册成功5秒返回登录页！！！");
response.setHeader("refresh", "5;url=login.jsp");
} else {
out.print("两次密码不一致，5秒后跳回注册页！！！");
response.setHeader("refresh", "5;url=zc.jsp");
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.sjw.entity.email;
import com.sjw.dao.emailDao;
@WebServlet("/dolook.do")
public class DoLook extends HttpServlet {
/**
* Constructor of the object.
*/
public DoLook() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html,charset=utf-8");
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
int idd = Integer.parseInt(id);
emailDao e = new emailDao();
e.update(idd);
email email = e.look(idd);
HttpSession session=request.getSession();
session.setAttribute("email", email);
request.getRequestDispatcher("look.jsp").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/dodel.do")
public class DoDel extends HttpServlet {
/**
* Constructor of the object.
*/
public DoDel() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html,charset=utf-8");
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
com.jyp.dao.emailDao e=new com.jyp.dao.emailDao();
String id=request.getParameter("id");
int idd=Integer.parseInt(id);
e.del(idd);
request.getRequestDispatcher("main.jsp").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.sjw.dao.emailDao;
import com.sjw.entity.email;
public class DoWrite extends HttpServlet {
/**
* Constructor of the object.
*/
public DoWrite() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html,charset=utf-8");
PrintWriter out = response.getWriter();
HttpSession session=request .getSession();
request.setCharacterEncoding("utf-8");
String address=(String)session.getAttribute("uname");
String receiver=request.getParameter("receiver");
String title=request.getParameter("title");
String contents=request.getParameter("contents");
email e=new email();
e.setAddress(address);
e.setReceiver(receiver);
e.setTitle(title);
e.setContents(contents);
emailDao ed=new emailDao();
ed.addEmail(e);
out.print("发送成功，3秒后跳回首页！！！");
response.setHeader("refresh", "3;url=main.jsp");
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sjw.dao.emailDao;
import com.sjw.entity.email;
public class Detail extends HttpServlet {
/**
* Constructor of the object.
*/
public Detail() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
String id=request.getParameter("id");
int uid=Integer.parseInt(id);
emailDao ed=new emailDao();
ed.update(uid);
email e=ed.lookEmail(uid);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
<%@ 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 'denglu.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>
<script type="text/javascript">
function validate(){
if(loginForm.uname.value==""){
alert("账号不能为空!");
return;
}
if(loginForm.upwd.value==""){
alert("密码不能为空!");
return;
}
loginForm.submit();
}
</script>
<form name="loginForm" action="dologin.jsp" method="post">
用户名:<input type="text" name="uname" value="zs"><br>
密码: <input type="password" name="upwd" value="zs">
<input type="button" value="登录" onClick="validate()">
</form>
<a href="reg.jsp">立即注册</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+"/";
%>
<%@page import="com.sjw.entity.Msg"%>
<%@page import="com.sjw.dao.MsgDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'main.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>
<%
MsgDao md = new MsgDao();
String uname = (String) session.getAttribute("uname");
List<Msg> list = md.getMailByReceiver(uname);
%>
欢迎你<%=uname%>
<a href="write.jsp">写邮件</a>
<table 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>
<%
for (int i = 0; i < list.size(); i++) {
%>
<tr>
<td><%=list.get(i).getUsername()%></td>
<td><%=list.get(i).getTitle()%></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).getMsg_create_date()%></td>
<td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a>
</td>
<td><a href="del.jsp?id=<%=list.get(i).getMsgid()%>">删除</a>
</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 'write.jsp' starting page</title>
</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 rows="6" cols="20" name="content"></textarea>
<br>
<input type="submit" value="发送">
</form>
</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%>">
</head>
<body>
<script type="text/javascript">
function dozhuce(){
if(loginform2.id.value==""){
alert("没有输入id");
return;
}
if(loginform2.uname.value==""){
alert("没有输入用户名");
return;
}
if(loginform2.upwd.value==""){
alert("没有输入密码");
return;
}
if(loginform2.upwd2.value==""){
alert("没有确认密码");
return;
}
loginform2.submit();
}
</script>
<form action="doregister.jsp" name="loginform2" method="post">
id: <input type="number" name="id"/>
用户名:<input type="text" value="zs" name="uname"/>
密码:<input type="password" value="11" name="upwd"/>
确认密码:<input type="password" value="11" name="upwd2"/>
<input type="button" value="注册" onclick="dozhuce()"/>
</form>
</body>
</html>
<%@page import="com.sjw.entity.Msg"%>
<%@page import="com.sjw.dao.MsgDao"%>
<%@page import="com.sjw.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
request.setCharacterEncoding("utf-8");
String uname=(String)session.getAttribute("uname");// 发件人在session中获取
String sendto=request.getParameter("sendto");
String title=request.getParameter("title");
String content=request.getParameter("content");
Msg m=new Msg();
m.setTitle(title);
m.setMsgcontent(content);
m.setUsername(uname);
m.setSendto(sendto);
MsgDao md=new MsgDao();
md.addMsg(m);
out.print("发送成功，即将跳回首页.....");
response.setHeader("refresh", "3;url=main.jsp");
%>
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