第11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.gd.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", "root");
            } 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.List;

import com.gd.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=null;
        ResultSet rs=null;
        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);
            }            
            
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, rs);
        }
        return list;
    }
    
}

package com.gd.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
    //登陆
     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.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;
    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 language="java" import="java.util.*" pageEncoding="utf-8"%>


<html>
  <head>
   
    
    <title>My JSP 'login.jsp' starting page</title>
    
    
  </head>
  
  <body>
   <h1>登录</h1>
    <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>

    
  </body>
</html>

<%@page import="com.gd.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>
   
    
    <title>My JSP 'dologin.jsp' starting page</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=Login.jsp");
        }
    %>
    
  </body>
</html>

<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    <title>My JSP 'main.jsp' starting page</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>发件人</th>
            <th>标题</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).getFjr().toString()); %></td>
            <td><%out.print(list.get(i).getTitle().toString()); %></td>
            <td><%out.print(list.get(i).getTime().toString()); %></td>
            <td><%if(list.get(i).getZt()==0){
            out.print("<img src='img/w.png'></img>");
            }else{
            out.print("<img src='img/y.png'></img>");
            }%></td>
        </tr>
        <%
            }
        %>

    </table>


  </body>
</html>

<%@page import="com.gd.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>
   
    
    <title>My JSP 'register.jsp' starting page</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="zc.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="注册" onclick="yz()">
                </td>
                <td><a href="login.jsp">登录</a>
                </td>
            </tr>
        </table>
  </body>
</html>

<%@page import="com.gd.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");
        UserDao ud = new UserDao();
        int i=ud.Register(uname, password);
        if(i>0){
        out.print("注册成功，即将跳到登录页.....");
        response.setHeader("refresh", "2;url=Login.jsp");
        }else{
        out.print("注册失败，即将跳回注册页.....");
        response.setHeader("refresh", "2;url=register.jsp");
        }
    %>

</body>
</html>