JSP第十次作业
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。
package com.mld.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.mld.entity.Msg;
public class MsgDao extends basedao{
//插入邮件
//删除邮件
//修改邮件状态
//按照接收者查询全部邮件
public List<Msg> getMailByReceiver(String name){
List<Msg> list=new ArrayList<Msg>();
Connection conn=getConnection();
String sql="select * from msg where sendto=?";
PreparedStatement ps;
ResultSet rs;
try {
ps = conn.prepareStatement(sql);
ps.setString(1, name);
rs=ps.executeQuery();
while(rs.next()){
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);
}
closeAll(conn, ps, rs);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}
}
package com.mld.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.mld.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.mld.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;
}
}
package com.mld.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;
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;
}
public Msg(int msgid, String username, String title, String msgcontent,
int state, String sendto, Date msg_create_date) {
super();
this.msgid = msgid;
this.username = username;
this.title = title;
this.msgcontent = msgcontent;
this.state = state;
this.sendto = sendto;
this.msg_create_date = msg_create_date;
}
public Msg() {
super();
}
@Override
public String toString() {
return "Msg [msgid=" + msgid + ", username=" + username + ", sendto=" + sendto + ", title="
+ title + ", msg_create_date=" + msg_create_date + ", state=" + state + ", msgcontent="
+ msgcontent + "]";
}
}
package com.mld.entity;
public class Users {
private int id;
private String uname;
private 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 language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
function validate() {
if (registerForm.uname.value == "") {
alert("账号不能为空！");
return;
}
if (registerForm.upwd.value == "") {
alert("密码不能为空！");
return;
}
registerForm.submit();
}
</script>
<form name="registerForm" action="doreg.jsp" method="post">
用户名:<input type="text" name="uname"><br>
密 码: <input type="password" name="upwd"><br>
<input type="submit" value="注册"><hr>
</form><hr>
<a href="login.jsp">返回登录</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.mld.dao.UsersDao"%>
<%@ page import="com.mld.dao.MsgDao"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<%
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
UsersDao ud = new UsersDao();
MsgDao md = new MsgDao();
if (ud.register(uname, upwd) > 0) {
session.setAttribute("uname", uname);
request.getRequestDispatcher("login.jsp").forward(request,
response);
} else {
out.print("注册失败，请重新注册.......");
response.setHeader("refresh", "3;url=reg.jsp");
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</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" ><br>
密 码：<input type="password" name="upwd" ><br>
<input type="button" value="登录" onClick="validate()">
</form>
<hr>
<a href="reg.jsp">返回注册</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.mld.dao.UsersDao"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<%
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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