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 myh;
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/test","root","990511"); } catch (Exception e) { System.out.println("连接失败"); 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 myh;
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 glg2.Email; public class EmailDao extends BaseDao{ public List
<Email> getAll(String name){ List<Email>list=new ArrayList<Email>(); Connection con=getConnection(); PreparedStatement pred=null; ResultSet resultSet=null; String sql="select * from email where addressee=?"; try { pred=con.prepareStatement(sql); pred.setString(1, name); resultSet=pred.executeQuery(); while(resultSet.next()){ Email email=new Email(); email.setId(resultSet.getInt(1)); email.setAddresser(resultSet.getString(2)); email.setAddressee(resultSet.getString(3)); email.setHead(resultSet.getString(4)); email.setContent(resultSet.getString(5)); email.setTime(resultSet.getDate(6)); email.setState(resultSet.getInt(7)); list.add(email); } } catch (SQLException e) { e.printStackTrace(); } return list; } }
     package myh;
import java.util.Date; public class Email { private Integer id; private String addresser; private String addressee; private String head; private Date time; private Integer state; private String content; public Integer getId() {
return id; } public void setId(Integer id) { this.id = id; } public String getAddresser() { return addresser; } public void setAddresser(String addresser) { this.addresser = addresser; } public String getAddressee() { return addressee; } public void setAddressee(String addressee) { this.addressee = addressee; } public String getHead() { return head; } public void setHead(String head) { this.head = head; } public Date getTime() { return time; } public void setTime(Date time) { this.time = time; } public Integer getState() { return state; } public void setState(Integer state) { this.state = state; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public Email() { super(); } public Email(Integer id, String addresser, String addressee, String head, Date time, Integer state, String content) { super(); this.id = id; this.addresser = addresser; this.addressee = addressee; this.head = head; this.time = time; this.state = state; this.content = content; } }
package myh2;
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 name,String pwd){ int i=-1; PreparedStatement pred=null; Connection con=getConnection(); String sql="insert into name(name,pwd)values(?,?)"; try { pred= con.prepareStatement(sql); pred.setString(1, name); pred.setString(2, pwd); i=pred.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); }finally{ closeAll(con, pred, null); } return i; } public boolean Login(String name,String pwd){ boolean f=false; PreparedStatement pred=null; ResultSet resultSet=null; Connection con=getConnection(); String sql="select * from name where name=? and pwd=?"; try { pred=con.prepareStatement(sql); pred.setString(1, name); pred.setString(2, pwd); resultSet=pred.executeQuery(); while(resultSet.next()){ f=true; } } catch (SQLException e) { e.printStackTrace(); } return f; } }
    package myh2;
public class Users { private Integer id; private String name; private String pwd; public Integer getId() {
return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public Users() { super(); } public Users(Integer id, String name, String pwd) { super(); this.id = id; this.name = name; this.pwd = pwd; } }
<%@page import="glg.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.name.value == null) {
                alert('用户名不能为空');
                return;
            }
            if (form.pwd.value == null) {
                alert('密码不能为空');
                return;
            }
            if (form.name.value != null && form.pwd.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="name"></td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="pwd"></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>
<%@page import="glg.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 name = request.getParameter("name");
        String pwd = request.getParameter("pwd");
        UserDao ud = new UserDao();
        if(ud.Login(name, pwd)){
        session.setAttribute("name", name);
        request.getRequestDispatcher("main.jsp").forward(request, response);
        }else{
        out.print("登录失败,即将跳回登录页.....");
        response.setHeader("refresh", "2;url=Login.jsp");
        }
    %>
  
</body>
</html>
<%@ 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.name.value == "") {
                alert('用户名不能为空');
                return;
            }
            if (form.pwd.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="name">
                </td>
            </tr>
            <tr>
                <td>密码</td>
                <td><input type="password" name="pwd">
                </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>
<%@page import="glg.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 name = request.getParameter("name");
        String pwd = request.getParameter("pwd");
        UserDao ud = new UserDao();
        int i=ud.Register(name, pwd);
        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>
<%@page import="glg2.Email"%>
<%@page import="glg.EmailDao"%>
<%@page import="glg.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 name = (String) session.getAttribute("name");
        EmailDao dao = new EmailDao();
        List<Email> list = dao.getAll(name);
    %>
    欢迎<%=name%>
    <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).getAddresser().toString()); %></td>
            <td><%out.print(list.get(i).getHead().toString()); %></td>
            <td><%out.print(list.get(i).getTime().toString()); %></td>
            <td><%if(list.get(i).getState()==0){
            out.print("<img src='img/w.png'></img>");
            }else{
            out.print("<img src='img/y.png'></img>");
            }%></td>
        </tr>
        <%
            }
        %>
  
    </table>
  
  
  
</body>
</html>

 

 

posted @ 2022-05-15 20:56  马宇航1  阅读(8)  评论(0编辑  收藏  举报