package cn.itcast.chap10.Test;
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( "dbc:mysql://localhost:3306/comser", "root", "root");
return conn;
} 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 cn.itcast.chap10.Test;
public class Msg {
//对msg数据库进行封装
private int msgid;
private String usernname;
private String title;
private String msgcontent;
private int state;
private String sendto;
private 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(String msg_create_date) {
this.msg_create_date = msg_create_date;
}
}
package cn.itcast.chap10.Test;
public class MsgDao {
//发送,回复---insert操作
//邮件列表 --select * from msg where username=....
//根据标题查内容 select
//阅读状态改变,,,未读 已读 update
//删除邮件 delete
}
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;
}
}
package cn.itcast.chap10.Test;
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 comser 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;
}
}
drop table users;
drop table msg;
CREATE TABLE users(
username VARCHAR(20) PRIMARY KEY,
PASSWORD VARCHAR(20),
email VARCHAR(20)
)
CREATE TABLE `msg` (
`msgid` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(100) NOT NULL,
`title` varchar(20) NOT NULL,
`msgcontent` varchar(20) NOT NULL,
`state` int(11) NOT NULL,
`sendto` varchar(20) NOT NULL,
`msg_create_date` datetime NOT NULL,
PRIMARY KEY (`msgid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
insert into users values('ls','456','aaaa@qq.com');
insert into users values('kitty','777','bbb@qq.com');
insert into users values('tom','456','abc@qq.com');
insert into users values('小红','456','88888@qq.com');
insert into users values('小白','88888','22222@qq.com');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','你好','兴隆又打折了,快来吧',0,'小白','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','打折了','食堂打折了,快来吧',1,'小红','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','系统非功能性需求分析','系统非功能性需求分析',0,'tom','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','收作业','兴隆又打折了,快来吧',0,'小白','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('ls','要考试了','兴隆又打折了,快来吧',1,'kitty','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('ls','放假通知','兴隆又打折了,快来吧',0,'小白','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','邀请函','系统功能模块设计',1,'ls','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('ls','毕业答辩须知','兴隆又打折了,快来吧',1,'小白','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','考研讲座','兴隆又打折了,快来吧',1,'小红','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('zs','四六级考试通知','兴隆又打折了,快来吧',0,'小白','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','交学费','兴隆又打折了,快来吧',1,'小红','2019-04-24');
insert into msg(username,title,msgcontent,state,sendto,msg_create_date)
values('kitty','毕业实习通知','兴隆又打折了,快来吧',0,'小红','2019-04-24');
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@page import="java.sql.SQLException"%>
<%@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"%>
<!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>
<%
String uname = request.getParameter("uname");
session.setAttribute("uname", uname);
Connection conn = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
//加载驱动
String url = "jdbc:mysql://localhost:3306/user";
String user = "root";
String password = "root";
conn = DriverManager.getConnection(url, user, password);
ps = conn.prepareStatement("select * from msg where username=?");
ps.setString(1, uname);
rs = ps.executeQuery();
%>
<table>
<tr>
<td>msgid</td>
<td>username</td>
<td>title</td>
<td>msgcontent</td>
<td>state</td>
<td>sendto</td>
<td>msg_create_date</td>
</tr>
<%
while (rs.next()) {
%>
<tr>
<td><%=rs.getString("username")%></td>
<td><%=rs.getString("title")%></td>
<td><%=rs.getString("msgcontent")%></td>
<td>
<%
if (rs.getString("state").equals("1")) {
%> <input type="button" value="点击查看"
onclick="window.location.href='show.jsp';" /> <%
} else {
%>
<div align="center">
<%
out.print("已查看");
%>
</div> <%
}
%> <%
String title=rs.getString("title");
session.setAttribute("title", title);
%>
</td>
<td><%=rs.getString("sendto")%></td>
<td><%=rs.getString("msg_create_date")%></td>
</tr>
<%
}
%>
</table>
<br>
<%
} catch (Exception e) {
e.printStackTrace();
} finally {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) { // ignore }
rs = null;
}
}
if (ps != null) {
try {
ps.close();
} catch (SQLException e) { // ignore }
ps = null;
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) { // ignore }
rs = null;
}
}
}
%>
</body>
</html>