jsp第十二周作业

1.实现 删除 回复邮件
2.实现阅读邮件功能：在main.jsp中点击任意邮件的标题，进入到detail.jsp显示邮件详情，包括发件人，主题，内容，时间。同时需要把邮件状态修改为已读。

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.Date;
import java.util.List;

import com.jyp.entity.Msg;

public class MsgDao extends BaseDao {
    // 1，插入邮件
    public void addMsg(Msg m) {
        Connection con = getConnection();
        String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?)";
        PreparedStatement ps = null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, m.getUsername());
            ps.setString(2, m.getTitle());
            ps.setString(3, m.getMsgcontent());
            ps.setInt(4, 1);
            ps.setString(5, m.getSendto());
            ps.setDate(6, new java.sql.Date(new Date().getTime()));// 系统当前时间
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(con, ps, null);
        }

    }

    // 2.删除邮件
    public void delMail(int id) {
        Connection conn = getConnection();
        String sql = "delete from msg where msgid=?";
        PreparedStatement ps = null;
        try {
            ps = conn.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, null);
        }

    }
     //(测试删除邮件的代码是否编写成功)
     //    public static void main(String[] args) {
     //    MsgDao md=new MsgDao();
    //    md.delMail(3);
    //}


    // 3.修改邮件状态
    public void update(int id) {
        Connection con = getConnection();
        String sql = "update  msg set state='1' where msgid=?";
        PreparedStatement ps = null;
        try {
            ps = con.prepareStatement(sql);
            ps.setInt(1, id);
            ps.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            closeAll(con, ps, null);
        }
    }

    // 4.按照接收者查询全部邮件
    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.setMsgcontent(rs.getString("msgcontent"));
                m.setState(rs.getInt("state"));
                m.setSendto(rs.getString("sendto"));
                m.setMsg_create_date(rs.getDate("msg_create_date"));
                list.add(m);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }finally{
            closeAll(con, ps, rs);
        }
        return list;

    }
    //5.实现阅读邮件功能
    public Msg read(int id) {
        Connection con = getConnection();
        String sql = "select msgid,username,sendto,title,msgcontent,msg_create_date from msg where msgid=?";
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {
            ps = con.prepareStatement(sql);
            ps.setInt(1, id);
            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.setMsgcontent(rs.getString("msgcontent"));
                m.setSendto(rs.getString("sendto"));
                m.setMsg_create_date(rs.getDate("msg_create_date"));
                return m;
            }

        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            closeAll(con, ps, rs);
        }
        return null;
    }


}

package com.jyp.dao;

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

import com.jyp.entity.Users;

public class UsersDao extends BaseDao {

    // 关于用户的增删改查

    // 1.登录
    public boolean login(String uname, String upwd) {
        boolean f = false;
        Connection con = getConnection();
        String sql = "select * from users where uname=? and upwd=?";
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setString(2, upwd);
            rs = ps.executeQuery();
            if (rs.next())
                f = true;
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            closeAll(con, ps, rs);
        }
        return f;
    }

    // 2.注册
    public int register(String uname, String upwd) {
        Connection con = getConnection();
        PreparedStatement ps = null;
        int x = 0;
        try {
            String sql = "insert into users(uname,upwd) values(?,?)";
            ps = con.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setString(2, upwd);
            x = ps.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            closeAll(con, ps, null);
        }
        return x;
    }
}

package com.jyp.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.jyp.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" value="zs"><br> 
    密码: <input  type="password" name="upwd"  value="zs">
    
        <input type="button" value="登录" onClick="validate()">    





    </form>

<a href="reg.jsp">立即注册</a>


  </body>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.jyp.dao.UsersDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'dologin.jsp' starting page</title>

</head>

<body>
    <%
        request.setCharacterEncoding("utf-8");
        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("登录失败，即将跳回登录页......");
            response.setHeader("refresh", "3;url=login.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%>">
  </head>
  
  <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="doregister.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 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>

    <%
        request.setCharacterEncoding("utf-8");
        String uname = request.getParameter("uname");
        String upwd = request.getParameter("upwd");

        UsersDao ud = new UsersDao();
        MsgDao md = new MsgDao();
        if (ud.register(uname, upwd) > 0) {
            session.setAttribute("uname", uname);
            request.getRequestDispatcher("login.jsp").forward(request,
                    response);
        } else {
            out.print("注册失败，请重新注册.......");
            response.setHeader("refresh", "3;url=reg.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+"/";
%>
<%@page import="com.jyp.entity.Msg"%>
<%@page import="com.jyp.dao.MsgDao"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'main.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>
    <%
        MsgDao md = new MsgDao();
        String uname = (String) session.getAttribute("uname");
        List<Msg> list = md.getMailByReceiver(uname);
    %>
    欢迎你<%=uname%>
    <a href="write.jsp">写邮件</a>

    <table border="1">
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
            <td>操作</td>
            <td>操作</td>
        </tr>

        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getUsername()%></td>
            <td><%=list.get(i).getTitle()%></td>
            <td>
                <%
                    if (list.get(i).getState() == 1) {
                %> <img src="images/sms_unReaded.png" />
                <%
                    } else {
                %> <img src="images/sms_readed.png" /> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a>
            </td>
            <td><a href="del.jsp?id=<%=list.get(i).getMsgid()%>">删除</a>
            </td>
        </tr>
        <%} %>
    </table>


</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 'write.jsp' starting page</title>
    
  </head>
  
  <body>
    <form action="dowrite.jsp" method="post">
        
    收件人:<input type="text" name="sendto" value="<%=request.getParameter("reply") %>"><br> 
    主题: <input  type="text" name="title" ><br>
    内容    <textarea rows="6" cols="20" name="content"></textarea>
<br>
<input type="submit" value="发送"> 



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

<%@page import="com.jyp.entity.Msg"%>
<%@page import="com.jyp.dao.MsgDao"%>
<%@page import="com.jyp.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    request.setCharacterEncoding("utf-8");
    
    String uname=(String)session.getAttribute("uname");// 发件人在session中获取
    String sendto=request.getParameter("sendto");
    String title=request.getParameter("title");
    String content=request.getParameter("content");
    
    Msg m=new Msg();
    m.setTitle(title);
    m.setMsgcontent(content);
    m.setUsername(uname);
    m.setSendto(sendto);
    
    MsgDao md=new MsgDao();
    md.addMsg(m);
    
    out.print("发送成功，即将跳回首页.....");
    response.setHeader("refresh", "3;url=main.jsp");
    
        
    
    

 %>

<%@page import="com.jyp.entity.Msg"%>
<%@page import="com.jyp.dao.MsgDao"%>
<%@page import="com.jyp.dao.UsersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    request.setCharacterEncoding("utf-8");
    
    int id=Integer.parseInt(request.getParameter("id"));
    MsgDao md=new MsgDao();
    md.delMsg(id);
    
    response.sendRedirect("main.jsp");
    
        
    
    

 %>

 

 

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