JSP第十一周练习

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

 1 package com.wl.email.domain;
 2 
 3 public class Email {
 4 
 5     private Long id;
 6     private String address;
 7     private String sender;
 8     private String tittle;
 9     private String content;
10     private String sendDate ;
11     private String state;
12     
13     public Email(Long id, String address, String sender, String tittle,
14             String content, String sendDate, String state) {
15         super();
16         this.id = id;
17         this.address = address;
18         this.sender = sender;
19         this.tittle = tittle;
20         this.content = content;
21         this.sendDate = sendDate;
22         this.state = state;
23     }
24     public Email() {
25         super();
26         // TODO Auto-generated constructor stub
27     }
28     public Long getId() {
29         return id;
30     }
31     public void setId(Long id) {
32         this.id = id;
33     }
34     public String getAddress() {
35         return address;
36     }
37     public void setAddress(String address) {
38         this.address = address;
39     }
40     public String getSender() {
41         return sender;
42     }
43     public void setSender(String sender) {
44         this.sender = sender;
45     }
46     public String getTittle() {
47         return tittle;
48     }
49     public void setTittle(String tittle) {
50         this.tittle = tittle;
51     }
52     public String getContent() {
53         return content;
54     }
55     public void setContent(String content) {
56         this.content = content;
57     }
58     public String getSendDate() {
59         return sendDate;
60     }
61     public void setSendDate(String sendDate) {
62         this.sendDate = sendDate;
63     }
64     public String getState() {
65         return state;
66     }
67     public void setState(String state) {
68         this.state = state;
69     }
70     @Override
71     public String toString() {
72         return "Email [id=" + id + ", address=" + address + ", sender="
73                 + sender + ", tittle=" + tittle + ", content=" + content
74                 + ", sendDate=" + sendDate + ", state=" + state + "]";
75     }
76     
77 
78 }
domain.Email

 

 1 package com.wl.email.domain;
 2 
 3 public class User {
 4 
 5     private Long id;
 6     private String username; 
 7     private String password;
 8     
 9     public User(Long id, String username, String password) {
10         super();
11         this.id = id;
12         this.username = username;
13         this.password = password;
14     }
15     public User() {
16         super();
17         // TODO Auto-generated constructor stub
18     }
19     public Long getId() {
20         return id;
21     }
22     public void setId(Long id) {
23         this.id = id;
24     }
25     public String getUsername() {
26         return username;
27     }
28     public void setUsername(String username) {
29         this.username = username;
30     }
31     public String getPassword() {
32         return password;
33     }
34     public void setPassword(String password) {
35         this.password = password;
36     }
37     @Override
38     public String toString() {
39         return "Email [id=" + id + ", username=" + username + ", password="
40                 + password + "]";
41     } 
42     
43 }
doamin.User
 1 package com.wl.email.utils;
 2 
 3 import java.sql.DriverManager;
 4 import java.sql.PreparedStatement;
 5 import java.sql.ResultSet;
 6 import java.sql.SQLException;
 7 
 8 import com.mysql.jdbc.Connection;
 9 
10 public class JDBCUtils {
11     private static Connection conn;
12     static {
13         try {
14             Class.forName("com.mysql.jdbc.Driver");
15             String url = "jdbc:mysql:///wl_tale?SSL=false";
16             String username = "root";
17             String password = "root";
18             conn = (Connection) DriverManager.getConnection(url, username,
19                     password);
20         } catch (Exception e) {
21             e.printStackTrace();
22         }
23 
24     }
25 
26     public static Connection getConn() {
27         return conn;
28     }
29 
30     public static void closeAll(Connection conn, PreparedStatement ps, ResultSet rs) {
31         try {
32             if (rs != null)
33                 rs.close();
34             if (ps != null)
35                 ps.close();
36             if (conn != null)
37                 conn.close();
38 
39         } catch (SQLException e) {
40             e.printStackTrace();
41         }
42     }
43 
44 }
JDBCUtils
 1 package com.wl.email.dao;
 2 
 3 import java.util.List;
 4 
 5 import com.wl.email.domain.Email;
 6 
 7 public interface IEmailDAO {
 8     void add(Email email);
 9     void delById(Long id);
10     void update(Email email);
11     Email selOneById(Long id);
12     List<Email> selAll();
13 
14 }
dao.IEmailDAO
 1 package com.wl.email.dao;
 2 
 3 import java.util.List;
 4 
 5 import com.wl.email.domain.User;
 6 
 7 public interface IUserDAO {
 8     void add(User user);
 9     void delById(Long id);
10     void update(User user);
11     User selOneByUser(User user);
12     List<User> selAll();
13 
14 }
dao.IUserDAO
 1 package com.wl.email.dao.impl;
 2 
 3 import java.sql.ResultSet;
 4 import java.sql.SQLException;
 5 import java.util.ArrayList;
 6 import java.util.List;
 7 
 8 import com.mysql.jdbc.Connection;
 9 import com.mysql.jdbc.PreparedStatement;
10 import com.wl.email.dao.IEmailDAO;
11 import com.wl.email.dao.IUserDAO;
12 import com.wl.email.domain.Email;
13 import com.wl.email.domain.User;
14 import com.wl.email.utils.JDBCUtils;
15 
16 public class IEmailDAOImpl implements IEmailDAO{
17 
18     @Override
19     public void add(Email email) {
20         // TODO Auto-generated method stub
21         
22     }
23 
24     @Override
25     public void delById(Long id) {
26         // TODO Auto-generated method stub
27         
28     }
29 
30     @Override
31     public void update(Email email) {
32         // TODO Auto-generated method stub
33         
34     }
35 
36     @Override
37     public Email selOneById(Long id) {
38         // TODO Auto-generated method stub
39         return null;
40     }
41 
42     @Override
43     public List<Email> selAll() {
44         Connection conn = null;
45         PreparedStatement ps = null;
46         ResultSet rs = null;
47         List<Email> listEmails = new ArrayList<Email>();
48         try {
49             conn = JDBCUtils.getConn();
50             String sql = "SELECT id,address,sender,tittle,content,sendDate,state FROM email";
51             ps = (PreparedStatement) conn.prepareStatement(sql);
52             rs = ps.executeQuery();
53             while (rs.next()) {
54                 // 8.获取ResuleSet对象的元素
55                 long id = rs.getLong("id");
56                 String address = rs.getString("address");
57                 String sender = rs.getString("sender");
58                 String tittle = rs.getString("tittle");
59                 String content = rs.getString("content");
60                 String sendDate = rs.getString("sendDate");
61                 String state = rs.getString("state");
62                 listEmails.add(new Email(id,address,sender,tittle,content,sendDate,state));
63             }
64         } catch (SQLException e) {
65             e.printStackTrace();
66         }finally{
67             JDBCUtils.closeAll(conn, ps, rs);
68         }
69         
70         return listEmails;
71     }
72 
73 
74 }
impl.IEmailDAOImpl
 1 package com.wl.email.dao.impl;
 2 
 3 import java.sql.ResultSet;
 4 import java.sql.SQLException;
 5 import java.util.List;
 6 
 7 import com.mysql.jdbc.Connection;
 8 import com.mysql.jdbc.PreparedStatement;
 9 import com.wl.email.dao.IUserDAO;
10 import com.wl.email.domain.User;
11 import com.wl.email.utils.JDBCUtils;
12 
13 public class IUserDAOImpl implements IUserDAO {
14 
15     @Override
16     public void add(User user) {
17         Connection conn = null;
18         PreparedStatement ps = null;
19         try {
20             conn = JDBCUtils.getConn();
21             String sql = "INSERT INTO user(username,password) VALUES(?,?); ";
22             ps = (PreparedStatement) conn.prepareStatement(sql);
23             ps.setString(1, user.getUsername());
24             ps.setString(2, user.getPassword());
25             int row = ps.executeUpdate();
26             System.out.println((row > 0)?"添加成功":"添加失败");
27         } catch (SQLException e) {
28             
29             e.printStackTrace();
30         }finally{
31             JDBCUtils.closeAll(conn, ps, null);
32         }
33 
34     }
35 
36     @Override
37     public void delById(Long id) {
38         // TODO Auto-generated method stub
39 
40     }
41 
42     @Override
43     public void update(User user) {
44         // TODO Auto-generated method stub
45 
46     }
47 
48     @Override
49     public User selOneByUser(User user) {
50         Connection conn = null;
51         PreparedStatement ps = null;
52         ResultSet rs = null;
53         User u = new User();
54         try {
55             conn = JDBCUtils.getConn();
56             String sql = "select * from user where username=? and password=?";
57             ps = (PreparedStatement) conn.prepareStatement(sql);
58             ps.setString(1, user.getUsername());
59             ps.setString(2, user.getPassword());
60             rs = ps.executeQuery();
61             if(rs.next()){
62                 long id = rs.getLong("id");
63                 String userName = rs.getString("username");
64                 String pwd = rs.getString("password");
65                 u = new User(id,userName,pwd);
66             }
67         } catch (SQLException e) {
68             
69             e.printStackTrace();
70         }finally{
71             JDBCUtils.closeAll(conn, ps, rs);
72         }
73         return u;
74     }
75 
76     @Override
77     public List<User> selAll() {
78         // TODO Auto-generated method stub
79         return null;
80     }
81 
82 }
impl.IUserDAOImpl
 1 package com.wl.email.service;
 2 
 3 import java.sql.ResultSet;
 4 import java.sql.SQLException;
 5 
 6 import com.mysql.jdbc.Connection;
 7 import com.mysql.jdbc.PreparedStatement;
 8 import com.wl.email.dao.IUserDAO;
 9 import com.wl.email.dao.impl.IUserDAOImpl;
10 import com.wl.email.domain.User;
11 import com.wl.email.utils.JDBCUtils;
12 
13 public class EmailService {
14     
15 
16     public boolean login(String username, String password) {
17         IUserDAO iuDAO = new IUserDAOImpl();
18         User user = iuDAO.selOneByUser(new User(new Long(100),username,password));
19         if(user != null){
20             return true;
21         }
22             return false;
23 
24     }
25 
26     public void register(String username, String password) {
27         IUserDAO iuDAO = new IUserDAOImpl();
28         iuDAO.add(new User(new Long(100),username,password));
29         
30 
31     }
32 }
EmailService

 

3.登陆，注册，登陆后显示全部邮件

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <html>
 3 <head>
 4 <title>用户注册</title>
 5 <script type="text/javascript">
 6     function ok() {
 7         if (registerForm.username.value == "") {
 8             alert("账号不能为空!");
 9             return;
10         }
11         if (registerForm.password.value == "") {
12             alert("密码不能为空!");
13             return;
14         }
15         registerForm.submit();
16         
17     }
18 </script>
19 </head>
20 <body>
21 
22     <form name="registerForm" action="AddService.jsp" method="post">
23         <table>
24             <tr>
25                 <th align="center">请注册</th>
26             </tr>
27             <tr>
28                 <td>用户名:</td>
29                 <td><input type="text" name="username"></input></td>
30             </tr>
31             <tr>
32                 <td>密 码:</td>
33                 <td><input type="password" name="password"></input></td>
34             </tr>
35             <tr>
36                 <td rowspan="2"><input type="button" value="完成注册"
37                     onClick="ok()">
38                 </td>
39             </tr>
40         </table>
41     </form>
42 </body>
43 </html>
Register.jsp
 1 <%@page import="com.wl.email.service.EmailService"%>
 2 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 3 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 4 <html>
 5 <head>
 6 <title>My JSP 'Register.jsp' starting page</title>
 7 </head>
 8 
 9 <body>
10     <%
11         EmailService ese = new EmailService();
12         request.setCharacterEncoding("utf-8");
13         String username = request.getParameter("username");
14         String password = request.getParameter("password");
15         ese.register(username, password);
16             request.getSession().setAttribute("USER_IN_SESSION", username);
17             request.getRequestDispatcher("Login.jsp")
18                     .forward(request, response);
19     %>
20 
21 </body>
22 </html>
AddService
 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 
 3 <html>
 4 <head>
 5 <title>登录</title>
 6 </head>
 7 <script type="text/javascript">
 8     function validate() {
 9         if (loginForm.username.value == "") {
10             alert("账号不能为空!");
11             return;
12         }
13         if (loginForm.password.value == "") {
14             alert("密码不能为空!");
15             return;
16         }
17         loginForm.submit();
18     }
19 </script>
20 <body>
21     <form name="loginForm" action="Home.jsp" method="post">
22         <table>
23             <tr>
24                 <td>
25                 <th align="center">欢迎登录</th>
26                 </td>
27             </tr>
28             <tr>
29                 <td>用户名:</td>
30                 <td><input type="text" name="username"></input>
31                 </td>
32             </tr>
33             <tr>
34                 <td>密 码:</td>
35                 <td><input type="password" name="password"></input>
36                 </td>
37             </tr>
38             <tr>
39                 <td><input type="button" value="登录" onClick="validate()">
40                 </td>
41                 <td><a href="Register.jsp">注册</a></td>
42             </tr>
43         </table>
44     </form>
45 
46     <br>
47 </body>
48 </html>
Login.jsp
 1 <%@page import="com.wl.email.dao.impl.IEmailDAOImpl"%>
 2 <%@page import="com.wl.email.domain.Email"%>
 3 <%@page import="com.wl.email.service.EmailService"%>
 4 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 5 <%
 6     String path = request.getContextPath();
 7     String basePath = request.getScheme() + "://"
 8             + request.getServerName() + ":" + request.getServerPort()
 9             + path + "/";
10 %>
11 
12 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
13 <html>
14 <head>
15 <base href="<%=basePath%>">
16 <title>我的邮箱</title>
17 <%
18         EmailService ese = new EmailService();
19         request.setCharacterEncoding("utf-8");
20         String username = request.getParameter("username");
21         String password = request.getParameter("password");
22         if (ese.login(username, password)) {
23             request.getSession().setAttribute("USER_IN_SESSION", username);
24         /*     request.getRequestDispatcher("Home.jsp").forward(
25                     request, response); */
26         } else {
27     %>
28     <script type="text/javascript">
29         alert("账号或密码错误");
30     </script>
31     <%
32         response.setHeader("refresh", "0;url=Login.jsp");
33         }
34     %>
35 </head>
36 <body>
37     <h1>欢迎你：${USER_IN_SESSION}</h1>
38     <a href="#">发送邮件</a>
39     <a href="#">删除邮件</a>
40     <a href="#">查看未读邮件</a>
41     <h3>收件箱</h3>
42     <%
43         IEmailDAOImpl ieDAO = new IEmailDAOImpl();
44         
45         List<Email> list = ieDAO.selAll();
46         %>
47         <table border="1">
48         <tr>
49            <th>发件人</th>
50             <th>标题</th>
51             <th>状态</th>
52            <th>时间</th>
53         </tr>
54        <%
55              for (int i = 0; i < list.size(); i++) {
56          %>
57         <tr>
58              <td>
59                 <%
60                     out.print(list.get(i).getSender() + "<br>");
61                  %>
62              </td>
63              <td>
64                  <%
65                     out.print(list.get(i).getTittle() + "<br>");
66                  %>
67             </td>
68             <td>
69                  <%
70                    out.print(list.get(i).getState() + "<br>");
71                  %>
72             </td>
73              <td>
74                 <%
75                     out.print(list.get(i).getSendDate() + "<br>");
76                %>
77            </td>
78        </tr>
79          <%
80             }
81          %>
82      </table>
83 
84 </body>
85 </html>
Home.jsp

 

 

 

 

 

posted @ 2022-05-15 21:59  L'童话故事  阅读(10)  评论(0)  编辑  收藏  举报