JSP第九次作业

其他 2020-05-18 15:44:14 阅读次数: 0

BaseDao

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/users", "root", "admin");
} 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();
}
}

}

MsgDao

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.Date;
import java.util.List;

import com.gd.entity.Msg;

public class MsgDao extends BaseDao {
    // 发送,回复---insert操作
    public void addMsg(Msg msg) {
        try {
            Connection con = getConnection();
            String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?);";
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setString(1, msg.getUsername());// 给sql语句的问号赋值
            ps.setString(2, msg.getTitle());
            ps.setString(3, msg.getMsgcontent());
            ps.setInt(4, 0);// 刚插入的邮件为未读邮件,直接赋值0
            ps.setString(5, msg.getSendto());
            ps.setDate(6, new java.sql.Date(new Date().getTime()));
            ps.executeUpdate();
            closeAll(con, ps, null);
        } catch (SQLException ex) {
            ex.printStackTrace();
        }

    }

    // 邮件列表 --select * from msg where username=....
    public List<Msg> getMailByReceiver(String receiverName) {
        List<Msg> list = new ArrayList<Msg>();

        try {
            Connection con = getConnection();// 获取连接
            String sql = "select * from msg where sendto=?";// 编写sql语句
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setString(1, receiverName);// //给sql问号赋值
            ResultSet rs = ps.executeQuery();// 执行查询
            // 处理查询结果
            while (rs.next()) {
                // 循环读取rs结果集,每一行作为一个msg对象,放入list集合中
                Msg msg = new Msg();
                msg.setMsgid(rs.getInt("msgid"));
                msg.setMsgcontent(rs.getString("msgcontent"));
                msg.setMsg_create_date(rs.getDate("msg_create_date"));
                msg.setSendto(rs.getString("sendto"));
                msg.setState(rs.getInt("state"));
                msg.setTitle(rs.getString("title"));
                msg.setUsernname(rs.getString("username"));
                list.add(msg);
            }
            closeAll(con, ps, rs);

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

        return list;
    }

    // 根据id查内容 select
    public Msg getMailById(int id) {
        Msg msg = new Msg();
        try {

            Connection con = getConnection();// 获取连接
            String sql = "select * from msg where msgid=?";// 编写sql语句
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setInt(1, id);// //给sql问号赋值
            ResultSet rs = ps.executeQuery();// 执行查询
            // 处理查询结果
            while (rs.next()) {
                // 循环读取rs结果集,每一行作为一个msg对象,放入list集合中

                msg.setMsgid(rs.getInt("msgid"));
                msg.setMsgcontent(rs.getString("msgcontent"));
                msg.setMsg_create_date(rs.getDate("msg_create_date"));
                msg.setSendto(rs.getString("sendto"));
                msg.setState(rs.getInt("state"));
                msg.setTitle(rs.getString("title"));
                msg.setUsernname(rs.getString("username"));

            }
            closeAll(con, ps, rs);

        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return msg;
    }

    public static void main(String[] args) {
        MsgDao md = new MsgDao();
        
        md.delMsg(14);
    }

    // 阅读状态改变,,,未读 已读 update
    public  void alterMsg(int id){
        
        try {
            Connection con=getConnection();
            String sql="update msg set state=1 where msgid=?";
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
            closeAll(con, ps, null);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        
    }
    
    
    

    // 删除邮件 delete
    public  void delMsg(int id){
        try {
            Connection con=getConnection();
            String sql="delete from msg where msgid=?";
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
            closeAll(con, ps, null);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        
    }

}

UsersDao

package com.gd.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.gd.entity.Users;

public class UsersDao extends BaseDao {
    // 登录功能
    public boolean login(String uname, String upwd) throws SQLException {
        // 获取连接
        Connection conn = getConnection();
        // 编写sql语句
        String sql = "select * from users where username=? and password=?";
        // 执行sql语句
        PreparedStatement ps = conn.prepareStatement(sql);
        ps.setString(1, uname);
        ps.setString(2, upwd);
        ResultSet rs = ps.executeQuery();
        if (rs.next()) {
            closeAll(conn, ps, rs);
            return true;
        } else {
            closeAll(conn, ps, rs);
            return false;

        }
    }
    public void addUsers(Users users) {
        try {
            Connection con = getConnection();
            String sql = "insert into users(username,password,email) values(?,?,?);";
            PreparedStatement ps = con.prepareStatement(sql);
            ps.setString(1, users.getUsername());
            ps.setString(2, users.getPassword());
            ps.setString(3, users.getEmail());
            ps.executeUpdate();
            closeAll(con, ps, null);
        } catch (SQLException ex) {
            ex.printStackTrace();
        }

    }


}

delete

<%@page import="com.gd.entity.Users"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    int id = Integer.parseInt(request.getParameter("delid"));

    MsgDao md = new MsgDao();
    md.delMsg(id);
    request.getRequestDispatcher("main.jsp").forward(request, response);
%>

detail

<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ 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>
    <%
        int id = Integer.parseInt(request.getParameter("id"));
        MsgDao md = new MsgDao();
        Msg m = md.getMailById(id);
        md.alterMsg(m.getMsgid());
    %>
    <p>
        题目:<%=m.getTitle()%></p>
    <p>
        来自:<%=m.getUsername()%></p>
    <p>
        时间:<%=m.getMsg_create_date()%></p>
    <p>
        内容:<%=m.getMsgcontent()%></p>
回复   <a href="main.jsp">返回</a>
</body>
</html>

do

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="com.gd.entity.Users"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.dao.UsersDao"%>
<%
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 'do.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>
  <%
  request.setCharacterEncoding("utf-8");
Users a=new Users();
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    String email = request.getParameter("uemail");

    a.setUsername(uname);
    a.setPassword(upwd);
    a.setEmail(email);

    UsersDao as=new UsersDao();
    as.addUsers(a);
    request.getRequestDispatcher("index.jsp").forward(request, response);
%>

  </body>
</html>

dologin

<%@page import="com.gd.entity.Users"%>
<%@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();
    if(request.getParameter("validationCode1").equals(request.getParameter("validationCode")))            
{            
    if (ud.login(uname, upwd)){        
    //登录成功,创建User对象,并放入session
        Users u=new Users();
        u.setUsername(uname);
        u.setPassword(upwd);
        session.setAttribute("user", u);
        request.getRequestDispatcher("main.jsp").forward(request, response);
    }
    else{
        response.sendRedirect("index.jsp");
        }
        }
        else{            
response.sendRedirect("index.jsp");            
}        

%>

dowrite

<%@page import="com.gd.entity.Users"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    Users u = (Users) session.getAttribute("user");
    String uname = request.getParameter("sjr");
    String title = request.getParameter("title");
    String content = request.getParameter("content");
    Msg m = new Msg();
    m.setUsernname(u.getUsername());//发件人  登陆者
    m.setSendto(uname);//收件人: 上一页面填写的
    m.setTitle(title);
    m.setMsgcontent(content);
    MsgDao md = new MsgDao();
    md.addMsg(m);
    request.getRequestDispatcher("main.jsp").forward(request, response);
%>

index

<%@ 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>
  <script type="text/javascript">
   function mycheck() {
 
//判断验证码是否为空
 if (form1.validationCode.value==""){
alert("验证码不能为空，请输入验证码!");
 form1.validationCode.focus();
 return;
 }
 //判断验证码是否正确
 if (form1.validationCode.value != form1.validationCode1.value) {
 alert("请输入正确的验证码!!");
 form1.validationCode.focus();
 return;
 }
 form1.submit1();
 }
 </script>
  <body>
   <form action="dologin.jsp" method="post">
用户名:<input type="text" name="uname" value="kitty" /><Br>
密码 ：<input type="password" name="upwd" value="777"/><br>
 <br>
 验证码：<input type="text" name="validationCode" 
 onKeyDown="if(event.keyCode==13){form1.submit.focus();}" size="6">
 <%
 int intmethod1 = (int) ((((Math.random()) * 11)) - 1);
 int intmethod2 = (int) ((((Math.random()) * 11)) - 1);
 int intmethod3 = (int) ((((Math.random()) * 11)) - 1);
 int intmethod4 = (int) ((((Math.random()) * 11)) - 1);
 //将得到的随机数进行连接
 String intsum = intmethod1 +""+ intmethod2+intmethod3+intmethod4;
 %>
 <!-- 设置隐藏域,验证比较时使用-->
 <input type="hidden" name="validationCode1" 
value="<%=intsum%>">
 <!-- 将图片名称与得到的随机数相同的图片显示在页面上 --> 
 <img src="images/<%=intmethod1%>.png"> 
 <img src="images/<%=intmethod2%>.png"> 
 <img src="images/<%=intmethod3%>.png">
 <img src="images/<%=intmethod4%>.png"> 
 <br>
<input type="submit" value="登录">
<a href="register.jsp">注册</a>
</form>
  </body>
</html>

logout

<%@page import="com.gd.entity.Users"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    session.removeAttribute("user");
    request.getRequestDispatcher("index.jsp").forward(request, response);
%>

main

<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.entity.Users"%>
<%@ 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>
    欢迎页面!!!欢迎你!!!<%
    Users u = (Users) session.getAttribute("user");
    out.print(u.getUsername());
    MsgDao md = new MsgDao();
    List<Msg> list = md.getMailByReceiver(u.getUsername());
    out.print(list.size());
%>
    <a href="write.jsp">写邮件</a>
    <a href="logout.jsp">退出</a>
    <table border="1" width="1000">
        <tr>
            <td>邮件id</td>
            <td>发件人</td>
            <td>标题</td>
            <td>收件人</td>
            <td>状态</td>
            <td>时间</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>

        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getMsgid()%></td>
            <td><%=list.get(i).getUsername()%></td>
            <td><a href="detail.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getTitle()%></a>
            </td>
            <td><%=list.get(i).getSendto()%></td>
            <td>
                <%
                    if (list.get(i).getState() == 0) {
                %> <img
                src="images/sms_unReaded.png"></img> <%
     } else {
 %> <img
                src="images/sms_readed.png"></img> <%
     }
 %>
            </td>
            <!-- 0已读,1未读 -->
            <td><%=list.get(i).getMsg_create_date()%></td>
            
            <td><a href="write.jsp?mailto=<%=list.get(i).getUsername() %>">回复</a>
            </td>
            <td> <a href="delete.jsp?delid=<%=list.get(i).getMsgid()%>">   删除</a>
            </td>

        </tr>



        <%
            }
        %>


    </table>


</body>
</html>

register

<%@ 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>
    
    <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>
   <form action="do.jsp" method="post">
用户名:<input type="text" name="uname"  /><Br>
密码 ：<input type="password" name="upwd" /><br>
email：<input type="text" name="uemail" /><br>
<input type="submit" value="确认">
</form>
  </body>
</html>

write

<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ 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>
    <form action="dowrite.jsp" method="post">
        <p>
            收件人:<input type="text" name="sjr" value=<%=request.getParameter("mailto") %> />
        </p>
        <p>
            标题:<input type="text" name="title" />
        </p>
        <p>
            内容:<input type="text" name="content" />
        </p>
        <input type="submit" value="发送">
    </form>
    
    <a href="main.jsp">返回</a>
</body>
</html>

注册

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