十一周作业
1.建库，建表2个
用户表（id,用户名，密码）
邮件表（id,发件人，收件人，标题，内容，发送时间，状态）
2.建model层
entity,dao包
3.登陆，注册，登陆后显示全部邮件
5个页面 login,dologin,reg,doreg,main
package com.cui.dao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class basedao { protected static Connection getConnection(){ Connection conn=null; try { Class.forName("com.mysql.jdbc.Driver"); conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/email?useUnicode=true&characterEncoding=utf8","root","123456"); System.out.println(conn); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return conn; } 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) { // TODO Auto-generated catch block e.printStackTrace(); } } }
package com.yzy.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.yzy.entity.Msg; public class MsgDao extends BaseDao{ public List<Msg> getAll(String uname){ List<Msg>list=new ArrayList<Msg>(); Connection con=getConnection(); PreparedStatement pred=null; ResultSet resultSet=null; String sql="select * from email where sjr=?"; try { pred=con.prepareStatement(sql); pred.setString(1, uname); resultSet=pred.executeQuery(); while(resultSet.next()){ Msg msg=new Msg(); msg.setId(resultSet.getInt(1)); msg.setFjr(resultSet.getString(2)); msg.setSjr(resultSet.getString(3)); msg.setTitle(resultSet.getString(4)); msg.setContent(resultSet.getString(5)); msg.setTime(resultSet.getDate(6)); msg.setZt(resultSet.getInt(7)); list.add(msg); } } catch (SQLException e) { e.printStackTrace(); } return list; } }
package com.cui.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class usersdao extends basedao{
public boolean login(String uname,String upwd){
boolean f=false;
Connection conn=getConnection();
String sql="select * from users where uname=? and upwd=?";
PreparedStatement ps=null;
ResultSet rs=null;
try {
ps= conn.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
rs=ps.executeQuery();
while(rs.next()){
f=true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
closeall(conn, ps, rs);
}
return f;
}
public int register(String uname,String upwd){
int i=-1;
Connection con=basedao.getConnection();
String sql="insert into users(uname,upwd)values(?,?)";
PreparedStatement pred = null;
try {
pred=con.prepareStatement(sql);
pred.setString(1, uname);
pred.setString(2, upwd);
i =pred.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeall(con, pred, null);
}
return i;
}
}
package com.cui.entity;
import java.sql.Date;
public class message {
private int mid; //编号
private String username; //发件人姓名
private String receiver; //收件人姓名
private String title; //标题
private String text; //内容
private Date sendtime; //发送时间
private int state; //状态
public int getMid() {
return mid;
}
public void setMid(int mid) {
this.mid = mid;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getReceiver() {
return receiver;
}
public void setReceiver(String receiver) {
this.receiver = receiver;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Date getSendtime() {
return sendtime;
}
public void setSendtime(Date sendtime) {
this.sendtime = sendtime;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
}
package com.cui.entity;
public class users {
private int uid; //编号
private String uname; //账号
private String upwd; //密码
public int getUid() {
return uid;
}
public void setUid(int uid) {
this.uid = uid;
}
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.yzy.dao.UsersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <% String uname = request.getParameter("uname"); String password = request.getParameter("password"); UsersDao ud = new UsersDao(); if(ud.Login(uname, password)){ 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", "2;url=denglu.jsp"); } %> </body> </html>
<%@page import="com.yzy.entity.Msg"%> <%@page import="com.yzy.dao.MsgDao"%> <%@page import="com.yzy.dao.UsersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <% String uname = (String) session.getAttribute("uname"); MsgDao dao = new MsgDao(); List<Msg> list = dao.getAll(uname); %> 欢迎<%=uname%> <br> <br> <table border="1px" cellspacing="0" cellpadding="30px"> <thead></thead> <tr> <th>序号</th> <th>发件人</th> <th>收件人</th> <th>标题</th> <th>内容</th> <th>时间</th> <th>状态</th> </tr> <tbody></tbody> <% for (int i = 0; i < list.size(); i++) { %> <tr> <td><%out.print(list.get(i).getId().toString()); %></td> <td><%out.print(list.get(i).getFjr().toString()); %></td> <td><%out.print(list.get(i).getSjr().toString()); %></td> <td><%out.print(list.get(i).getTitle().toString()); %></td> <td><%out.print(list.get(i).getContent().toString()); %></td> <td><%out.print(list.get(i).getTime().toString()); %></td> <td><%if(list.get(i).getZt()==0){ out.print("未读"); }else{ out.print("已读"); }%></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> </head> <body> <form action="doregister.jsp" method="post"> 账号：<input type="text" name="uname"><br> 密码：<input type="text" name="upwd"><br> <input type="submit"value="注册"> <input type="reset" value="重置 "> </form> </body> </html>
