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.nn.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", "501002");
            } 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.nn.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.nn.entity.msg;
import com.sun.org.apache.regexp.internal.recompile;

public class msgDao extends BaseDao{
    public List<msg> listAll(String username) throws SQLException{
        List<msg> list =new ArrayList<msg>();
        Connection conn =getConnection();
        String sql="select * from msg where username=?";
        PreparedStatement pred =null;
        
        ResultSet rest=null;
        try {
            pred=conn.prepareStatement(sql);
            pred.setString(1, username);
            rest=pred.executeQuery();
            while (rest.next()) {
                msg msg=new msg();
                msg.setMsgid(rest.getInt("msgid"));
                msg.setUsername(rest.getString("username"));
                msg.setTitle(rest.getString("title"));
                msg.setMsgcontent(rest.getString("msgcontent"));
                msg.setState(rest.getInt("state"));
                msg.setSendto(rest.getString("sendto"));
                msg.setMsg_create_date(rest.getDate("msg_create_date"));
                list.add(msg);
            }
        } catch (Exception e) {
            // TODO: handle exception
        }
        finally{
            closeAll(conn, pred, rest);
        }
        return list;
    }
    
}
package com.nn.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.nn.entity;

import java.sql.Date;

public class msg {
    private Integer msgid;
    private String username;
    private String title;
    private String msgcontent;
    private Integer state;
    private String sendto;
    private Date msg_create_date;
    public Integer getMsgid() {
        return msgid;
    }
    public void setMsgid(Integer 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 Integer getState() {
        return state;
    }
    public void setState(Integer 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.nn.entity;

public class users {
        private Integer id;
        private String uname;
        private String upwd;
        public Integer getId() {
            return id;
        }
        public void setId(Integer 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"%>
<%
	request.setCharacterEncoding("utf-8");
	response.setCharacterEncoding("utf-8");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  		<script type="text/javascript">
  			function dozhuce(){
  				if(loginform2.id.value==""){
  					alert("没有输入id");
  					return;
  				}
  				if(loginform2.uname.value==""){
  					alert("没有输入用户名");
  					return;
  				}
  				if(loginform2.upwd.value==""){
  					alert("没有输入密码");
  					return;
  				}
  				if(loginform2.upwd2.value==""){
  					alert("没有确认密码");
  					return;
  				}
  				loginform2.submit();
  			}
  		</script>
  	<form action="dozhuce.jsp" name="loginform2" method="post">
  		id: <input type="number" name="id"/>
  		用户名:<input type="text" value="zs" name="uname"/>
  		密码:<input type="password" value="11" name="upwd"/>
  		确认密码:<input type="password" value="11" name="upwd2"/>
  		<input type="button" value="注册" onclick="dozhuce()"/>
  		</form>
  </body>
</html>

  

<%@page import="com.nn.Dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	request.setCharacterEncoding("utf-8");
	response.setCharacterEncoding("utf-8");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  		<%	
  			String uid=request.getParameter("id");
  			Integer id=Integer.parseInt(uid);
  			String uname=request.getParameter("uname");
  			String upwd =request.getParameter("upwd");
  			String upwd2 =request.getParameter("upwd2");
  			usersDao usersDao=new usersDao();
  			if(upwd.equals(upwd2)){
  				if(usersDao.id(id)){
  					out.print("已经有这个id了,即将跳回注册页.....");
					response.setHeader("refresh", "5;url=zhuce.jsp");
  				}
  				else{
  					usersDao.zhuce(id, uname, upwd);
  					out.print("注册成功,即将跳回登录页.....");
					response.setHeader("refresh", "5;url=login.jsp");
				}
  			}
  			else{
				out.print("两次密码不一致,即将跳回注册页.....");
				response.setHeader("refresh", "5;url=zhuce.jsp");
	}
  		 %>
  </body>
</html>

  

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	request.setCharacterEncoding("utf-8");
	response.setCharacterEncoding("utf-8");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  		<script type="text/javascript">
  			function dologin(){
  				if(loginform.uname.value==""){
  					alert("没有输入用户名");
  					return;
  				}
  				if(loginform.upwd.value==""){
  					alert("没有输入密码");
  					return;
  				}
  				loginform.submit();
  			}
  		</script>
  	<form action="dologin.jsp" name="loginform" method="post">
  		用户名:<input type="text" value="zs" name="uname"/>
  		密码:<input type="password" value="11" name="upwd"/>
  		<input type="button" value="登录" onclick="dologin()"/>
  		<a href="zhuce.jsp">没有账号?立即注册</a>
  		</form>
  </body>
</html>

  

<%@page import="sun.security.jgss.LoginConfigImpl"%>
<%@page import="com.nn.Dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	request.setCharacterEncoding("utf-8");
	response.setCharacterEncoding("utf-8");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <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("zhuye.jsp").forward(request, response);
  			}
  			else{
  				out.print("登录失败,5s后跳转登录页面");
  				response.setHeader("refresh", "5;url=login.jsp");
  			}
  		 %>
  </body>
</html>

  

<%@page import="java.util.List"%>
<%@page import="com.nn.Dao.msgDao"%>
<%@page import="com.nn.entity.msg"%>
<%@page import="sun.security.jgss.LoginConfigImpl"%>
<%@page import="com.nn.Dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	request.setCharacterEncoding("utf-8");
	response.setCharacterEncoding("utf-8");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

  <body>
  		<%
  		String uname=(String)session.getAttribute("uname");
	if(uname==null){
		out.print("您未登录,即将跳回登陆页.....");
		response.setHeader("refresh", "5;url=login.jsp");
	}else{
 %>
欢迎你<%=uname %>
  		
  		
  			
  			<%
  			msg msg=new msg();
  			msgDao msgDao =new msgDao();
  			List<msg> list =new ArrayList<msg>();
  			list=msgDao.listAll(uname);
  		 %>
  		 邮件列表:
  		 <table width="600px" border="2px solid red">
  		 		<tr>
  		 			<th>id</th><th>发件人</th><th>标题</th><th>内容</th><th>已读未读状态</th><th>收件人</th><th>发送时间</th>
  		 		</tr>
  		 		<%
  		 		if(list.size()==0){
  		 			out.print("你没有邮件");
  		 		}else{
  		 		 for(msg msg1:list){
				%>
  		 		<tr>
  		 			<td><%out.print(msg1.getMsgid()); %></td>
  		 			<td><%out.print(msg1.getUsername()); %></td>
  		 			<td><%out.print(msg1.getTitle()); %></td>
  		 			<td><%out.print(msg1.getMsgcontent()); %></td>
  		 			<td><%out.print(msg1.getState()); %></td>
  		 			<td><%out.print(msg1.getSendto()); %></td>
  		 			<td><%out.print(msg1.getMsg_create_date()); %></td>
  		 		</tr>
  		 		<%}}} %>
  		 </table>
  </body>
</html>

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

posted @ 2022-05-11 11:21  倪楠  阅读(47)  评论(0编辑  收藏  举报