JSP第九次作业

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
11.png

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", "016205");
        } 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{
    public List<Msg> getMailByReceiver(String name){
        List<Msg> list=new ArrayList<Msg>();
        Connection con=getConnection();
        String sql="select * from msg where sendto=?";
        PreparedStatement ps=null;
        ResultSet rs=null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, name);
            rs=ps.executeQuery();
            while(rs.next()){
                Msg m=new Msg();
                m.setMsgid(rs.getInt("msgid"));
                m.setUsername(rs.getString("username"));
                m.setTitle(rs.getString("title"));
                m.setState(rs.getInt("state"));
                m.setMsgcontent(rs.getString("msgcontent"));
                m.setSendto(rs.getString("sendto"));
                m.setMsg_create_date(rs.getDate("mgs_create_date"));
                list.add(m);
            }

        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, 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{

    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 Auto-generated catch block
            e.printStackTrace();
        }
        return f;
    }
    public int reg(String uname, String upwd) {
        Connection conn = getConnection();
        int i=0;
        PreparedStatement ps = null;
        try {
            String sql = "insert into users(uname,upwd) values(?,?)";
            ps = conn.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setString(2, upwd);
            i=ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, null);
        }
        return i;
    }
}
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;
    private 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;
    }

}
<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="res.jsp">注册</a>
</form>
</body>
<%@ page import="com.gd.dao.MsgDao" %>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    request.setCharacterEncoding("utf-8");
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    UsersDao ud=new UsersDao();
    MsgDao md=new MsgDao();
    if(ud.login(uname, upwd)){
        session.setAttribute("uname", uname);
        request.getRequestDispatcher("main.jsp").forward(request, response);
    }else{
        out.print("登陆失败,即将跳回登陆页.....");
        response.setHeader("refresh", "5;url=denglu.jsp");
    }
%>
<body>
<%
    request.setCharacterEncoding("utf-8");
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    UsersDao ud=new UsersDao();
    MsgDao md=new MsgDao();
    if(ud.reg(uname, upwd)>0){
        session.setAttribute("uname", uname);
        request.getRequestDispatcher("denglu.jsp").forward(request, response);
    }else{
        out.print("登陆失败,即将跳回登陆页.....");
        response.setHeader("refresh", "5;url=shibai.jsp");
    }
%>
</body>
<body>
<%
    String uname=(String)session.getAttribute("uname");
%>
欢迎你 <% out.print(uname); %>
<table height="20px" width="100%" align="center" 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(Msg m:list)
        {%>
    <tr>
        <td><%=m.getUsername() %></td>
        <td><%=m.getTitle() %></td>
        <td><%
            int state=m.getState();
            if(state==1){ %>
            <img src ="image/已读消息.png" />
            <%;
            }else{%>
            <img src ="image/未读.png" />
            <%;
            }
            %></td>
        <td><%=m.getMsg_create_date() %></td>
    </tr>
    <%}
    %>
</table>
</body>
<body>
<script type="text/javascript">
    function validate(){
        if(resForm.uname.value==""){
            alert("账号不能为空!");
            return;
        }
        if(resForm.upwd.value==""){
            alert("密码不能为空!");
            return;
        }
        resForm.submit();
    }
</script>
<form name="resForm" action="doRes.jsp" method="post">
    <b>用户名</b>
    <input type="text" name="uname" />
    <br />
    <b>密码</b>
    <input type="text" name="upwd" />
    <br />
    <input type="button" value="注册" onClick="validate()">
    <a href="denglu.jsp">登录</a>
</form>
</body>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    request.setCharacterEncoding("utf-8");
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    UsersDao ud=new UsersDao();
    MsgDao md=new MsgDao();
    if(ud.login(uname, upwd)){
        session.setAttribute("uname", uname);
        request.getRequestDispatcher("main.jsp").forward(request, response);
    }else{
        out.print("登陆失败,即将跳回登陆页.....");
        response.setHeader("refresh", "5;url=denglu.jsp");
    }

 

 

 

 

 

 

 

 

 

 

posted @ 2022-05-15 21:41  Vending  阅读(2)  评论(0编辑  收藏  举报