第十一周作业
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
package com.fyx.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.jw.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0，时间为系统当前时间) //根据id删除邮件 //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.fyx.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; } }
package com.fyx.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UsersDao extends BaseDao{ public int Register(String uname,String password){ int i=-1; PreparedStatement pred=null; Connection con=getConnection(); String sql="insert into users(uname,password)values(?,?)"; try { pred= con.prepareStatement(sql); pred.setString(1, uname); pred.setString(2, password); i=pred.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); }finally{ closeAll(con, pred, null); } return i; } public boolean Login(String uname,String password){ boolean f=false; PreparedStatement pred=null; ResultSet resultSet=null; Connection con=getConnection(); String sql="select * from users where uname=? and password=?"; try { pred=con.prepareStatement(sql); pred.setString(1, uname); pred.setString(2, password); resultSet=pred.executeQuery(); while(resultSet.next()){ f=true; } } catch (SQLException e) { e.printStackTrace(); } return f; } }
package com.fyx.dao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class BaseDao { public Connection getConnection() { Connection con = null; try { Class.forName("com.mysql.jdbc.Driver"); con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root"); } catch (Exception e) { e.printStackTrace(); } return con; } 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(); } } }
<%@page import="com.fyx.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> <h1>登录</h1> <script> function yz() { if (form.uname.value == null) { alert('用户名不能为空'); return; } if (form.password.value == null) { alert('密码不能为空'); return; } if (form.uname.value != null && form.password.value != null) { form.submit(); } } </script> <form action="dologin.jsp" method="post" name="form"> <table> <tr> <td>用户名</td> <td><input type="text" name="uname"></td> </tr> <tr> <td>密码</td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="button" value="登录" onclick="yz()"></td> <td><a href="register.jsp">注册</a></td> </tr> </table> </form> </body> </html>
<%@page import="com.fyx.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.fyx.entity.Msg"%> <%@page import="com.fyx.dao.MsgDao"%> <%@page import="com.fyx.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"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title>注册</title> </head> <body> <h1>注册</h1> <script> function yz() { if (form.uname.value == "") { alert('用户名不能为空'); return; } if (form.password.value == "") { alert('密码不能为空'); return; } form.submit(); } </script> <form action="denglu.jsp" method="post" name="form"> <table> <tr> <td>用户名</td> <td><input type="text" name="uname"> </td> </tr> <tr> <td>密码</td> <td><input type="password" name="upwd"> </td> </tr> <tr> <td><input type="button" value="注册" onclick="yz()"> </td> <td><a href="denglu.jsp">登录</a> </td> </tr> </table> </form> </body> </html>
