JSP第十二周作业

1.实现昨天讲过的 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。

dao：

BaseDao.java:
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", "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 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{
    //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1(未读)，时间为系统当前时间)
    
    public void addMsg(Msg m){
        Connection conn=getConnection();
        String sql="insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,1,?,?)";
        PreparedStatement ps=null;
        try {
             ps=conn.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()));
             ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, null);
        }        
    }
    public static void main(String[] args) {
        MsgDao md=new MsgDao();
        md.delMsg(4);
    }    
    
    //根据id删除邮件
    public void delMsg(int id){
        Connection con=getConnection();
        String sql="delete from msg where msgid="+id;
        PreparedStatement ps=null;
        try {
            ps=con.prepareStatement(sql);
            ps.executeUpdate();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(con, ps, null);
        }
        
    }
    
    
    
    
    //根据id修改邮件状态（统一改成1）
    
    
    //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 sendto=?";
        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;
    }
    
    
    
    

}

UserDao.java:
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{
    //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=null;
        ResultSet rs=null;
        try {
            ps = conn.prepareStatement(sql);
            ps.setString(1, name);//第一个？赋值为name
            ps.setString(2, pwd);
            rs=ps.executeQuery();
            if(rs.next())//查到结果了
                f=true;            
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            closeAll(conn, ps, rs);
        }
        return f;tiy
    }    
    
    //注册
    public void addUser(Users u){
        
        
        
        
    }
    
    

}

entiy:

Msg.java: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;
    }

}

Users.java:
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;
    }

}

denglu.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>

</head>

<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>
</html>

dologin.jsp:

<%@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");
    }
        
    
    

 %>

main.jsp:
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head
<title>My JSP 'index.jsp' starting page</title>
</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>

write.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.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>

dowrite.jsp:
<%@page import="com.gd.entity.Msg"%>
<%@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=(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");
 %>

del.jsp:
<%@page import="com.gd.entity.Msg"%>
<%@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");
    int id=Integer.parseInt(request.getParameter("id"));
    MsgDao md=new MsgDao();
    md.delMsg(id);
    response.sendRedirect("main.jsp");
 %>