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

3.登陆，注册，登陆后显示全部邮件

package com.jyp.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", "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.jyp.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 javax.annotation.PreDestroy;

import com.jyp.entity.Msg;
import com.sun.org.apache.regexp.internal.recompile;

public class MsgDao extends BaseDao{
     public List<Msg> getMsgByReceiver(String uname) {
            List<Msg> list=new ArrayList<Msg>();
            Connection con=getConnection();
            String sql="select * from email where receiver=?";
            PreparedStatement ps=null;
            ResultSet rs=null;
            try{
                ps=con.prepareStatement(sql);
                ps.setString(1,uname);
                rs=ps.executeQuery();
                while(rs.next()){
                    Msg e=new Msg();
                    e.setId(rs.getInt(1));
                    e.setAddress(rs.getString(2));
                    e.setReceiver(rs.getString(3));
                    e.setTitle(rs.getString(4));
                    e.setContents(rs.getString(5));
                    e.setTime(rs.getDate(6));
                    e.setState(rs.getInt(7));
                    list.add(e);
                }
            }catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
            }finally{
                closeAll(con, ps, rs);
            }
            return list;
            
        }
    
}

package com.jyp.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) throws SQLException{
            
            boolean f= false;
            Connection conn =getConnection();
            PreparedStatement pred=null;
            ResultSet rest=null;
            String sql="select * from users where uname=? and upwd=?";
            try {
                pred =conn.prepareStatement(sql);
                pred.setString(1, uname);
                pred.setString(2, upwd);
                rest =pred.executeQuery();
                while(rest.next()){
                    f=true;
                }
            } catch (Exception e) {
                // TODO: handle exception
            }finally{
                closeAll(conn, pred, rest);
            }
            return f;
        }
        
        public boolean id(Integer id) throws SQLException{
            
            boolean f= false;
            Connection conn =getConnection();
            PreparedStatement pred=null;
            ResultSet rest=null;
            String sql="select * from users where id=?";
            try {
                pred =conn.prepareStatement(sql);
                pred.setInt(1, id);
                rest =pred.executeQuery();
                while(rest.next()){
                    f=true;
                }
            } catch (Exception e) {
                // TODO: handle exception
            }finally{
                closeAll(conn, pred, rest);
            }
            return f;
        }
        
        public void zhuce(Integer id,String uname,String upwd){
            Connection conn =getConnection();
            PreparedStatement pred=null;
            try {
                String sql="insert into users(id,uname,upwd) values(?,?,?)";
                pred =conn.prepareStatement(sql);
                pred.setInt(1, id);
                pred.setString(2, uname);
                pred.setString(3, upwd);
                pred.executeUpdate();
                
            } catch (Exception e) {
                // TODO: handle exception
            }
            finally{
                closeAll(conn, pred, null);
            }
        }
}

package com.jyp.entity;

import java.sql.Date;

public class Msg {
    private int id;
    private String address;
    private String receiver;
    private String title;
    private String contents;
    private Date time;
    private int state;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    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 getContents() {
        return contents;
    }
    public void setContents(String contents) {
        this.contents = contents;
    }
    public Date getTime() {
        return time;
    }
    public void setTime(Date time) {
        this.time = time;
    }
    public int getState() {
        return state;
    }
    public void setState(int state) {
        this.state = state;
    }




    }

package com.jyp.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() {
        super();
    }

    
}

<%@ 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>
    <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>
    <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"><br> 密码: <input
            type="password" name="upwd"> <input type="button" value="登录"
            onClick="validate()"> <a href="register.jsp">注册</a>
    </form></html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@page import="com.jyp.dao.UsersDao"%>
<%@page import="com.jyp.dao.MsgDao"%>
<!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 usersDao=new UsersDao();
            if(usersDao.login(uname, upwd)){
                session.setAttribute("uname", uname);
                request.getRequestDispatcher("main.jsp").forward(request, response);
            }
            else{
                out.print("登录失败,5s后跳转登录页面");
                response.setHeader("refresh", "5;url=index.jsp");
            }
         %>
  </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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'register.jsp' starting page</title>
  
  </head>
  
  <body>
    <script type="text/javascript">
        function zcButton() {
            if (loginForm.uname.value == "") {
                alert("用户名不能为空");
                return;
            }
            if (loginForm.upwd.value == "") {
                alert("密码不能为空");
                return;
            }
            if (loginForm.rupwd.value == "") {
                alert("未确认密码");
                return;
            }
            loginForm.submit();
        }
    </script>
    <form action="doregister.jsp" name="loginForm" method="post">
        请输入用户名：<input type="text" name="uname" /><br> 
        请输入密码：<input type="password" name="upwd" /><br> 
        确认密码：<input type="password" name="rupwd" /><br>
         <input type="button" value="注册" onclick="zcButton()" /><br> 
         <a href="index.jsp">返回登录</a>

    </form>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@page import="com.jyp.dao.UsersDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  
  </head>
  
  <body>
    <body>
    <%
        request.setCharacterEncoding("utf-8");
        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");
        String rupwd = request.getParameter("rupwd");
        if (upwd.equals(rupwd)) {
            UsersDao ud = new UsersDao();
            ud.register(uname, upwd);
            out.print("注册成功5秒返回登录页！！！");
            response.setHeader("refresh", "5;url=index.jsp");
        } else {
            out.print("两次密码不一致，5秒后跳回注册页！！！");
            response.setHeader("refresh", "5;url=register.jsp");
        }
    %>
</body>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@page import="com.jyp.dao.MsgDao"%>
<%@page import="com.jyp.entity.Msg"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     </head>
  
  <body>
    <%
        request.setCharacterEncoding("utf-8");
        String uname = (String)session.getAttribute("uname");
        MsgDao ed=new MsgDao();
        List<Msg> list=ed.getMsgByReceiver(uname);
    %>
    欢迎你，<%=uname%><br>

    <table width="800px" style="border: 1px solid pink;">
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
        </tr>
        <%
                if (list.size() == 0) {
                out.print("还没有人给您写文件哦！！！");
                } else {
                for(int i=0;i<list.size();i++){
            %>
        <tr>
            <td>
                <%

                    out.print(list.get(i).getAddress());
                %>
            </td>
            <td>
                <%
                    out.print(list.get(i).getTitle());
                %>
            </td>
            <td>
                <%
                    if (list.get(i).getState() ==0){
                            out.print("<img src='unread.png'></img>");
                        } else {
                            out.print("<img src='read.png'/>");
                        }
                %>
            </td>
            <td><%out.print(list.get(i).getTime()); %></td>
        </tr>
        <%}}%>
    </table>
  </body>
</html>

 

 

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