LWM

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。

login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title>My JSP 'student.jsp' starting page</title>

</head>
<%
    
%>
<body>
    <form action="login_link.jsp">
        姓名:<input type="text" name="name" /> <br>密码:<input type="password"
            name="pwd" /> <br><input type="submit" value="登录" />
    </form>
    <form action="logon.jsp">
        <input type="submit" value="注册" />
    </form>
</body>
</html>

login_link.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title></title>

</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String pwd = request.getParameter("pwd");
    String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    try {
        UsersDao usersdao = new UsersDao();
        if (usersdao.login(uname, pwd)) {
            String n = (String) session.getAttribute("uname");
            if (n == null) {
                session.setAttribute("uname", name);
            }
            request.getRequestDispatcher("mail.jsp").forward(request,
                    response);

        } else {
            out.println("登陆失败!");
            out.println("三秒后跳转到登录页面...");
            response.setHeader("refresh", "3;url=login.jsp");
        }
    } catch (Exception e) {
        out.println("异常!!");
        out.println("三秒后跳转到登录页面...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
    <a href="login.jsp">返回</a>
</body>
</html>

logon.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title>My JSP 'student.jsp' starting page</title>

</head>
<%
    
%>
<body>
    <form action="login_link.jsp">
        姓名:<input type="text" name="name" /> <br>密码:<input type="password"
            name="pwd" /> <br><input type="submit" value="登录" />
    </form>
    <form action="logon.jsp">
        <input type="submit" value="注册" />
    </form>
</body>
</html>

logon_link.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title>My JSP 'slogon_link.jsp' starting page</title>

</head>
<%@ page import="dao.UsersDao"%>
<%
    String name = request.getParameter("name");
    String upwd = request.getParameter("pwd");
    String uname=new String(name.getBytes("ISO-8859-1"),"utf-8");
    int pwd = Integer.parseInt(upwd);
    UsersDao usersdao=new UsersDao();
    if (usersdao.logon(uname, pwd) != -1) {
        out.println("注册成功!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    } else {
        out.println("注册失败!");
        out.println("三秒后跳转到登录页...");
        response.setHeader("refresh", "3;url=login.jsp");
    }
%>
<body>
</body>
</html>

mail.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title></title>
<%@ page import="dao.MsgDao"%>
<%@ page import="entity.Msg"%>
<style type="text/css">
table {
    border: 1px black solid;
    width: 500px;
}
</style>
</head>

<body>
    <%
    request.setCharacterEncoding("utf-8");
        String name = (String) session.getAttribute("uname");
        String uname = new String(name.getBytes("ISO-8859-1"), "utf-8");
    %>
    <%
        out.println(uname);
    %>的邮箱:<a href="write.jsp">写邮箱</a>
    <br>
    <%
        MsgDao m = new MsgDao();
        List<Msg> list = m.getMailByReceiver(uname);
    %>
    <table>
        <tr>
            <td>发件人</td>
            <td>主题</td>
            <td>状态</td>
            <td>时间</td>
        </tr>
        <%
            for (int i = 0; i < list.size(); i++) {
        %>
        <tr>
            <td><%=list.get(i).getUsername()%></td>
            <td><a href="chakan.jsp?id=<%=list.get(i).getMsgid() %>"><%=list.get(i).getTitle()%></a></td>
            <td>
                <%
                    if (list.get(i).getState() == 0) {
                %><img src="image/weidu.png" /> <%
     } else {
 %> <img src="image/yidu.png" /> <%
     }
 %>
            </td>
            <td><%=list.get(i).getMsg_create_date()%></td>
            <td>
            <form action="delete.jsp">
            <input type="hidden" value="<%=list.get(i).getMsgid() %>" name="Msgid">
            <input type="submit" value="删除"  >
            </form>
            </td>
            <td><a href="write.jsp?reply=<%=list.get(i).getUsername() %>">回复</a></td>
            </tr>
            <%
                }
            %>
        
    </table>
</body>
</html>

write.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title></title>
</head>
<body>
    <form action="write_link.jsp">
        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"> <a href="mail.jsp">返回</a>
    </form>
</body>
</html>

write_link.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title></title>
</head>
<%@page import="dao.MsgDao"%>
<%@page import="entity.Msg"%>
<body>
    <%
        request.setCharacterEncoding("utf-8");
        Msg m = new Msg();
        String Uname = (String) session.getAttribute("uname");
        String Sendto = request.getParameter("sendto");
        String Title = request.getParameter("title");
        String Content = request.getParameter("content");

        String uname = new String(Uname.getBytes("ISO-8859-1"), "utf-8");
        String sendto = new String(Sendto.getBytes("ISO-8859-1"), "utf-8");
        String title = new String(Title.getBytes("ISO-8859-1"), "utf-8");
        String content = new String(Content.getBytes("ISO-8859-1"), "utf-8");

        m.setUsername(uname);
        m.setSendto(sendto);
        m.setTitle(title);
        m.setMsgcontent(content);

        MsgDao md = new MsgDao();
        if (md.addMsg(m) != -1) {
            out.println("添加成功!");
            out.println("三秒后跳转到mail页面...");
            response.setHeader("refresh", "3;url=mail.jsp");
        } else {
            out.println("添加失败!");
            out.println("三秒后跳转到mail页面...");
            response.setHeader("refresh", "3;url=mail.jsp");
        }
    %>
</body>
</html>

delete.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'delete.jsp' starting page</title>
</head>
<%@page import="dao.MsgDao"%>
<body>
    <%
        try{
        String msgid = request.getParameter("Msgid");
            int msgId = Integer.parseInt(msgid);
            MsgDao md = new MsgDao();
            if (md.deleteMsg(msgId) != -1) {
        out.println("删除成功!");
        out.println("1秒后跳转到mail页面...");
        response.setHeader("refresh", "1;url=mail.jsp");
            }else{
            out.println("删除失败!");
            out.println("三秒后跳转到mail页面...");
            response.setHeader("refresh", "3;url=mail.jsp");
            }
        }catch(Exception e){
        e.printStackTrace();
        }
    %>
</body>
</html>

chakan.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
<head>

<title></title>

</head>
<%@ page import="dao.MsgDao"%>
<body>
    <%
        String Id = request.getParameter("id");
        int msgid = Integer.parseInt(Id);
        MsgDao md = new MsgDao();
        md.xiugai(msgid);
        out.println(md.chakan(msgid));
        
    %>
    <br>
    <a href="mail.jsp">返回</a>
</body>
</html>

basedao.java

package 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", "root");
            } 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.java

package 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 entity.Msg;

public class MsgDao extends BaseDao{
    //关于邮件的增删改查    
    //添加邮件(写邮件,回复邮件都调用,邮件状态为0,时间为系统当前时间)
    public int addMsg(Msg m){
        int t=-1;
        PreparedStatement ps=null;
        Connection con=getConnection();
        String sql="insert into msg (username,title,msgcontent,state,sendto,msg_create_date) value(?,?,?,0,?,?)";
        try {
            ps=con.prepareStatement(sql);
            ps.setString(1,m.getUsername());
            ps.setString(2,m.getTitle());
            ps.setString(3,m.getMsgcontent());
            ps.setString(4, m.getSendto());
            ps.setDate(5, new java.sql.Date(new Date().getTime()));
            t=ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, null);
        }
        return t;
    }
    
    //根据id删除邮件
    public int deleteMsg(int msgId){
        int t=-1;
        PreparedStatement ps=null;
        Connection con=getConnection();
        String sql="delete from msg where msgid=?";
        try {
            ps=con.prepareStatement(sql);
            ps.setInt(1, msgId);
            t=ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, null);
        }
        
        return t;
        
    }
    
    //根据id修改邮件状态(统一改成1)
    public Msg chakan(int msgid){
        Msg m=null;
        Connection con=getConnection();
        ResultSet rs=null;
        PreparedStatement ps=null;
        String sql="select * from msg where msgid=?";
        try {
            ps=con.prepareStatement(sql);
            ps.setInt(1, msgid);
            rs=ps.executeQuery();
            while(rs.next()){
                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"));
            }
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, rs);
        }
        return m;
    }
    
    public int xiugai(int msgid){
        int t=-1;
        Connection con=getConnection();
        PreparedStatement ps=null;
        String sql="update msg set state=1 where msgid=?";
        try {
            ps=con.prepareStatement(sql);
            ps.setInt(1, msgid);
            t=ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, null);
        }
        return t;
    }
    
    //根据收件人查看全部邮件
    public List<Msg> getMailByReceiver(String name){
        List<Msg> list=new ArrayList<Msg>();
        Connection con=getConnection();
        String sql="select * from msg where username=?";
        PreparedStatement ps=null;
        ResultSet rs=null;
        try {
            ps = con.prepareStatement(sql);
            ps.setString(1, name);
             rs=ps.executeQuery();
            while(rs.next()){
                //每读取一行,创建一个msg对象,对象放到集合中
                Msg m=new Msg();
                m.setMsgid(rs.getInt(1));
                m.setUsername(rs.getString(2));
                m.setTitle(rs.getString(3));
                m.setMsgcontent(rs.getString(4));
                m.setState(rs.getInt(5));
                m.setSendto(rs.getString(6));
                m.setMsg_create_date(rs.getDate(7));
                list.add(m);                
            }            
            
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, rs);
        }        
        return list;
    }
    
    public static void main(String[] args) {
        MsgDao m=new MsgDao();
        Msg mm=new Msg();
        System.out.println(m.chakan(19));
    }
    
    

}

usersdao.java

package dao;

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

public class UsersDao extends BaseDao{
    //关于用户的增删改查,用到什么功能鞋什么
    
    //登陆
    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);//第一个?赋值为name
            ps.setString(2, pwd);
            ResultSet rs=ps.executeQuery();
            if(rs.next())//查到结果了
                f=true;
            closeAll(conn, ps, rs);
            
            
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }        
        return f;
    }    
    
    //注册
    public int logon(String uname, int upwd) {
        Connection conn = getConnection();
        PreparedStatement ps = null;
        int r = -1;
        try {
            String sql = "insert into users(uname,upwd) values(?,?)"; // 2个占位符
            // 4.执行SQL语句
            ps = conn.prepareStatement(sql);
            ps.setString(1, uname);
            ps.setInt(2, upwd);
            r = ps.executeUpdate();// 增删改都用这个
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            closeAll(conn, ps, null);
        }
        return r;

    }
    
    

}

msg.java

package 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;
    @Override
    public String toString() {
        return "Msg [msgid=" + msgid + ", username=" + username + ", title="
                + title + ", msgcontent=" + msgcontent + ", state=" + state
                + ", sendto=" + sendto + ", msg_create_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;
    }

}

user.java

package 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;
    }

}

 

 

 

 

 

 

 

 

 

posted on 2022-05-18 14:37  Lwmm  阅读(24)  评论(0编辑  收藏  举报