Jsp第八次作业

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 {
//经常用 所以建一个获取关闭
    //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/user", "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{
    //发送,回复---insert操作
    
    //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;
    }
    
    
    //根据标题查内容   select 
    public Msg getMailById(int id){
        Msg msg=new Msg();
        try {
            
            Connection con = getConnection();//获取连接
            String sql = "select * from msg where id=?";//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;
    }

    
    //阅读状态改变,,,未读 已读   update
    
    //删除邮件  delete 

}

UsersDao.java

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 {
    // 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 static void main(String[] args) {
//        UsersDao ud=new UsersDao();
//        try {
//            System.out.println(ud.login("tom", "456"));
//        } catch (SQLException e) {
//            // TODO Auto-generated catch block
//            e.printStackTrace();
//        }
//    }

}

Msg.java

package com.gd.entity;

import java.sql.Date;

public class Msg {
    int msgid;
    String usernname;
    String title;
    String msgcontent;
    int state;
    String sendto;
    String msg_create_date;
    public int getMsgid() {
        return msgid;
    }
    public void setMsgid(int msgid) {
        this.msgid = msgid;
    }
    public String getUsernname() {
        return usernname;
    }
    public void setUsernname(String usernname) {
        this.usernname = usernname;
    }
    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 String getMsg_create_date() {
        return msg_create_date;
    }
    public void setMsg_create_date(Date date) {
        this.msg_create_date = msg_create_date;
    }

}

Users.java

package com.gd.entity;

public class Users {
    String username;
    String password;
    String email;
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }

}

detail.jsp

<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    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" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
    <%
        int id = Integer.parseInt(request.getParameter("id"));
        MsgDao md = new MsgDao();
        Msg m = md.getMailById(id);
    %>
    <p>
        题目:<%=m.getTitle()%></p>
    <p>
        来自:<%=m.getUsernname()%></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>

dologin.jsp

<%@page import="com.gd.entity.Users"%>
<%@page import="com.gd.dao.UsersDao"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<%
    request.setCharacterEncoding("utf-8");
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    UsersDao ud = new UsersDao();
    if (ud.login(uname, upwd)){
        //登陆成功 创建User页面，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");
%>
</html>

index.java

<%@ page language="java" contentType="text/html; charset=utf-8"
    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" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<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>

<input type="submit" value="登录">

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

main.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
    <%@page import="java.sql.SQLException"%>
    
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.entity.Users"%>
<%@page import="java.util.List"%>
<%@page import="com.gd.dao.BaseDao"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.Connection"%>

<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</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>
<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).getUsernname() %></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()==1){ %>
<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="">回复</a></td>
  <td><a href="">删除</a></td>
 
 </tr>
 
 
 
 <%} %>


</talbe>


</body>
</html>

write.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
    <%@page import="java.sql.SQLException"%>
    
<%@page import="com.gd.entity.Msg"%>
<%@page import="com.gd.dao.MsgDao"%>
<%@page import="com.gd.entity.Users"%>
<%@page import="java.util.List"%>
<%@page import="com.gd.dao.BaseDao"%>
<%@page import="com.gd.entity.Msg"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.Connection"%>

<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</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>
<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).getUsernname() %></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()==1){ %>
<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="">回复</a></td>
  <td><a href="">删除</a></td>
 
 </tr>
 
 
 
 <%} %>


</talbe>


</body>
</html>