第十一周

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
11.png

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.cui.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.cui.entity.message;


public class messagedao extends basedao{
    public List<message> getAll(String uname){
        List<message>list=new ArrayList<message>();
        Connection con=getConnection();
        PreparedStatement pred=null;
        ResultSet resultSet=null;
        String sql="select * from email where receiver=?";
        try {
            pred=con.prepareStatement(sql);
            pred.setString(1, uname);
            resultSet=pred.executeQuery();
            while(resultSet.next()){
                message email=new message();
                email.setMid(resultSet.getInt(1));
                email.setUsername(resultSet.getString(2));
                email.setReceiver(resultSet.getString(3));
                email.setTitle(resultSet.getString(4));
                email.setText(resultSet.getString(5));
                email.setSendtime(resultSet.getDate(6));
                email.setState(resultSet.getInt(7));
                list.add(email);
            }
        } 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.cui.dao.messagedao"%>
<%@page import="com.cui.dao.usersdao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head> </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("登陆失败,三秒后返回登录界面");
response.setHeader("refresh", "3;url=login.jsp");
}


%>
 </body>
</html>
<%@page import="com.cui.dao.usersdao"%>
<%@page import="javax.xml.bind.ParseConversionEvent"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  </head>
  
  <body>
    <%
        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");
        usersdao u=new usersdao();
        int i=u.register(uname, upwd);
        if (i > 0) {
            out.print("注册成功,三秒后返回登录界面");
            response.setHeader("refresh", "3;url=login.jsp");
        } else {
            out.print("注册失败,三秒后返回注册界面");
            response.setHeader("refresh", "3;url=register.jsp");
        }
    %>
  </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
    This is my JSP page. <br>
  </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="dologin.jsp" method="post">
    账号:<input type="text" name="uname" ><br>
    密码:<input type="upwd" name="upwd" ><br>
    <input type="submit" value=登录>
    <a href="register.jsp" >注册</a>

    </form>
  </body>
</html>
<%@page import="com.cui.entity.message"%>
<%@page import="com.cui.dao.messagedao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head> </head>
  <body>
  <% 
  messagedao md=new messagedao();
  String name=(String)session.getAttribute("uname");
  List<message> list=md.getAll(name);%>
  欢迎你<%=name %> 
  <table>
  <tr><td>编号</td>
  <td>发件人</td>
  <td>收件人</td>
  <td>标题</td>
  <td>内容</td>
  <td>发送时间</td>
  <td>状态</td>
  </tr>
  <%for(int i=0;i<list.size();i++){%>
      <tr><td><%out.print(list.get(i).getMid());%></td>
       <td><%out.print(list.get(i).getUsername());%></td>
       <td><% out.print(list.get(i).getReceiver());%></td>
        <td><%out.print(list.get(i).getTitle());%></td>
         <td><% out.print(list.get(i).getText());%></td>
          <td><% out.print(list.get(i).getSendtime());%></td>
          <td><%  out.print(list.get(i).getState());%></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>

 

posted @ 2022-05-11 16:24  崔明月  阅读(33)  评论(0编辑  收藏  举报