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();
}
}
}
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.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)
//根据id删除邮件
//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 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;
}
}
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;
}
}
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;
}
}
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;
}
}
<%@ 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>
<%@ 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>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title></title>
</head>
<%
%>
<body>
<h3>请输入信息来完成注册...</h3>
<form action="logon_link.jsp">
用户名：<input type="text" name="name" /> 密码:<input type="password"
name="pwd" /> <input type="submit" value="注册" />
</form>
<a href="login.jsp">返回</a>
</body>
</html>
<%@ 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>
<%@ 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>
