jsp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

package com.gd.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
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/email?autoReconnect=true&useSSL=false", "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.gd.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 name,String pwd){
        boolean f=false;
        Connection conn=getConnection();
        String sql="select * from users where uname=? and upwd=?";
        PreparedStatement ps;
        try {
            
            ps=conn.prepareStatement(sql);
            ps.setString(1, name);
            ps.setString(2, pwd);
            ResultSet rs=ps.executeQuery();
            if(rs.next())
                f=true;    
            closeAll(conn,ps,rs);
            
        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }
                
        return f;
        
    }
    
    public void reg(String uname,String upwd){
        Connection conn=getConnection();
        PreparedStatement ps=null;
        try {
            
            String sql="insert into users(uname,upwd) values(?,?)";
            ps=conn.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setString(2, upwd);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            closeAll(conn,ps,null);
        }
    }

}

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{
    //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_creat_date(rs.getDate(7));
                list.add(m);
            }
        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            closeAll(conn,ps,rs);
        }
        return list;
    }

}

package com.gd.entity;

import java.sql.Date;

public class Msg {
    private int msgid;
    private String username;
    private String title;
    private String msgcontent;
    private int state;
    private String sendto;
    Date msg_creat_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_creat_date() {
        return msg_creat_date;
    }
    public void setMsg_creat_date(Date msg_creat_date) {
        this.msg_creat_date = msg_creat_date;
    }
    public Msg(int msgid, String username, String title, String msgcontent,
            int state, String sendto, Date msg_creat_date) {
        super();
        this.msgid = msgid;
        this.username = username;
        this.title = title;
        this.msgcontent = msgcontent;
        this.state = state;
        this.sendto = sendto;
        this.msg_creat_date = msg_creat_date;
    }
    public Msg() {
        super();
    }
    
    

}

package com.gd.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;
    }
    public Users(int id, String uname, String upwd) {
        super();
        this.id = id;
        this.uname = uname;
        this.upwd = upwd;
    }
    public Users() {
        super();
    }
    

}

 

3.登陆，注册，登陆后显示全部邮件

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>    
    <title>login</title>
  </head>
  
  <body>
  <p>欢迎来到登录页面!!</p><br>
    
    <form  name="form" action="dologin.jsp" method="post">
      用户名：<input type="text" name="uname"><br>
      密码：<input type="password" name="upwd"><br>
        <input type="submit" value="登录" >    <br>
    <a href="zhuce.jsp">注册新用户</a>
    </form>
  </body>
</html>

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

<html>
  <head>    
    <title>register</title>
  </head>
  
  <body>
  <p>欢迎来到注册界面</p>
  <form  name="form" action="dozhuce.jsp" method="post">
      姓名：<input type="text" name="uname"><br>
      密码：<input type="password" name="upwd"><br>
    <input type="submit" value="注册完成" >    <br>
    <a href="dozhuce.jsp">返回登录界面</a>
    </form>
  </body>
</html>

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

<html>
<head>
<title>do login</title>
</head>

<body>
    <%
        request.setCharacterEncoding("utf-8");
            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>

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

<html>
  <head>    
    <title>do register</title>
  </head>
  
  <body>
    <%
        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");
        
        UsersDao ud=new UsersDao();
        ud.reg(uname, upwd);
        request.getRequestDispatcher("login.jsp").forward(request, response);
    %>
  </body>
</html>

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

<html>
  <head>
 
    <title>main</title>

  </head>
  
  <body>
    <%String uname=(String)session.getAttribute("uname"); %>
    欢迎<%=uname %>
    <table border="1">
    <tr>
    <td>发件人</td> <td>主题</td> <td>状态</td> <td>时间</td>
    </tr>
    
    <%
    MsgDao md=new MsgDao();
    List<Msg> list=md.getMailByReceiver(uname);
    
    for(int i=0;i<list.size();i++){   
     %>
     <tr>
     <td><%out.print(list.get(i).getUsername().toString());%></td>
     <td><%out.print(list.get(i).getTitle().toString()); %></td>
     <td><%if(list.get(i).getState()==1){
     out.print("<img src='img/1.png'></img>");     
     }else{
      out.print("<img src='img/0.png'></img>");
     }     
     %></td>
     <td><%out.print(list.get(i).getMsg_creat_date().toString()); %></td>
     </tr>
     <%} %>
    
    </table>
  </body>
</html>