JSP第十一周作业
1.建库，建表2个
用户表（id,用户名，密码）
邮件表（id,发件人，收件人，标题，内容，发送时间，状态）
2.建model层
entity,dao包
3.登陆，注册，登陆后显示全部邮件
package dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class BaseDao {
public Connection getConnection() {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/user","root","123456");
} catch (Exception e) {
e.printStackTrace();
}
return con;
}
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 com.lrp.entity.Email; public class EmailDao extends BaseDao{ public List<Email> getAll(String uname){ List<Email>list=new ArrayList<Email>(); Connection con=getConnection(); PreparedStatement pred=null; ResultSet resultSet=null; String sql="select * from email where sjr=?"; try { pred=con.prepareStatement(sql); pred.setString(1, uname); resultSet=pred.executeQuery(); while(resultSet.next()){ Email email=new Email(); email.setId(resultSet.getInt(1)); email.setFjr(resultSet.getString(2)); email.setSjr(resultSet.getString(3)); email.setTitle(resultSet.getString(4)); email.setContent(resultSet.getString(5)); email.setTime(resultSet.getDate(6)); email.setZt(resultSet.getInt(7)); list.add(email); } } catch (SQLException e) { e.printStackTrace(); } return list; } }
package dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class UserDao extends BaseDao{
public int Register(String uname,String password){
int i=-1;
PreparedStatement pred=null;
Connection con=getConnection();
String sql="insert into users(uname,password)values(?,?)";
try {
pred= con.prepareStatement(sql);
pred.setString(1, uname);
pred.setString(2, password);
i=pred.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}finally{
closeAll(con, pred, null);
}
return i;
}
public boolean Login(String uname,String password){
boolean f=false;
PreparedStatement pred=null;
ResultSet resultSet=null;
Connection con=getConnection();
String sql="select * from users where uname=? and password=?";
try {
pred=con.prepareStatement(sql);
pred.setString(1, uname);
pred.setString(2, password);
resultSet=pred.executeQuery();
while(resultSet.next()){
f=true;
}
} catch (SQLException e) {
e.printStackTrace();
}
return f;
}
}
<%-- Created by IntelliJ IDEA. User: LInk Date: 2022/5/14 Time: 23:10 To change this template use File | Settings | File Templates. --%> <%@ page import="src.dao.UserDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <% String uname = request.getParameter("uname"); String password = request.getParameter("password"); UserDao ud = new UserDao(); int i=ud.Register(uname, password); if(i>0){ out.print("注册成功，即将跳到登录页....."); response.setHeader("refresh", "2;url=Login.jsp"); }else{ out.print("注册失败，即将跳回注册页....."); response.setHeader("refresh", "2;url=register.jsp"); } %> </body> </html>
<%-- Created by IntelliJ IDEA. User: LInk Date: 2022/5/14 Time: 23:10 To change this template use File | Settings | File Templates. --%> <%@ page import="src.dao.UserDao" %> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <% String uname = request.getParameter("uname"); String password = request.getParameter("password"); UserDao ud = new UserDao(); int i=ud.Register(uname, password); if(i>0){ out.print("注册成功，即将跳到登录页....."); response.setHeader("refresh", "2;url=Login.jsp"); }else{ out.print("注册失败，即将跳回注册页....."); response.setHeader("refresh", "2;url=register.jsp"); } %> </body> </html>
<%-- Created by IntelliJ IDEA. User: LInk Date: 2022/5/14 Time: 23:10 To change this template use File | Settings | File Templates. --%> <%@page import="src.dao.UserDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <h1>登录</h1> <script> function yz() { if (form.uname.value == null) { alert('用户名不能为空'); return; } if (form.password.value == null) { alert('密码不能为空'); return; } if (form.uname.value != null && form.password.value != null) { form.submit(); } } </script> <form action="dologin.jsp" method="post" name="form"> <table> <tr> <td>用户名</td> <td><input type="text" name="uname"></td> </tr> <tr> <td>密码</td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="button" value="登录" onclick="yz()"></td> <td><a href="register.jsp">注册</a></td> </tr> </table> </form> </body> </html>
<%-- Created by IntelliJ IDEA. User: LInk Date: 2022/5/14 Time: 23:10 To change this template use File | Settings | File Templates. --%> <%@ page import="com.lrp.entity.Email"%> <%@ page import="com.lrp.dao.EmailDao"%> <%@ page import="com.lrp.dao.UserDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML> <html> <head> <base href="<%=basePath%>"> <title></title> </head> <body> <% String uname = (String) session.getAttribute("uname"); EmailDao dao = new EmailDao(); List<Email> list = dao.getAll(uname); %> 欢迎<%=uname%> <br> <br> <table border="1px" cellspacing="0" cellpadding="30px"> <thead></thead> <tr> <th>发件人</th> <th>标题</th> <th>时间</th> <th>状态</th> </tr> <tbody></tbody> <% for (int i = 0; i < list.size(); i++) { %> <tr> <td><%out.print(list.get(i).getFjr().toString()); %></td> <td><%out.print(list.get(i).getTitle().toString()); %></td> <td><%out.print(list.get(i).getTime().toString()); %></td> <td><%if(list.get(i).getZt()==0){ out.print("<img src='img/w.png'></img>"); }else{ out.print("<img src='img/y.png'></img>"); }%></td> </tr> <% } %> </table> </body> </html>
<%--
Created by IntelliJ IDEA.
User: LInk
Date: 2022/5/14
Time: 23:10
To change this template use File | Settings | File Templates.
--%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title>注册</title>
</head>
<body>
<h1>注册</h1>
<script>
function yz() {
if (form.uname.value == "") {
alert('用户名不能为空');
return;
}
if (form.password.value == "") {
alert('密码不能为空');
return;
}
form.submit();
}
</script>
<form action="doregister.jsp" method="post" name="form">
<table>
<tr>
<td>用户名</td>
<td><input type="text" name="uname">
</td>
</tr>
<tr>
<td>密码</td>
<td><input type="password" name="password">
</td>
</tr>
<tr>
<td><input type="button" value="注册" onclick="yz()">
</td>
<td><a href="Login.jsp">登录</a>
</td>
</tr>
</table>
</form>
</body>
</html>
