├── .gitignore
├── index.png
├── src
    ├── main
    │   ├── webapp
    │   │   ├── static
    │   │   │   ├── css
    │   │   │   │   ├── base.css
    │   │   │   │   ├── login.css
    │   │   │   │   └── index.css
    │   │   │   └── images
    │   │   │   │   └── background.png
    │   │   ├── WEB-INF
    │   │   │   └── web.xml
    │   │   ├── bookDetail.jsp
    │   │   ├── login.jsp
    │   │   ├── addBook.jsp
    │   │   ├── updateBook.jsp
    │   │   └── index.jsp
    │   ├── resources
    │   │   └── db.properties
    │   └── java
    │   │   └── com
    │   │       └── hu
    │   │           ├── service
    │   │               ├── UserService.java
    │   │               ├── BookService.java
    │   │               └── impl
    │   │               │   ├── UserServiceImpl.java
    │   │               │   └── BookServiceImpl.java
    │   │           ├── dao
    │   │               ├── UserDao.java
    │   │               ├── BookDao.java
    │   │               └── impl
    │   │               │   ├── UserDaoImpl.java
    │   │               │   └── BookDaoImpl.java
    │   │           ├── filter
    │   │               ├── EncodingFilter.java
    │   │               └── LoginFilter.java
    │   │           ├── servlet
    │   │               ├── LogoutServlet.java
    │   │               ├── DeleteServlet.java
    │   │               ├── BookDetailServlet.java
    │   │               ├── GetOneServlet.java
    │   │               ├── AddServlet.java
    │   │               ├── UpdateServlet.java
    │   │               ├── LoginServlet.java
    │   │               └── GetServlet.java
    │   │           ├── entiry
    │   │               ├── User.java
    │   │               └── Book.java
    │   │           └── utils
    │   │               └── JDBCUtil.java
    └── test
    │   └── java
    │       └── GetBookTest.java
├── README.md
├── pom.xml
└── sql
    └── store.sql


/.gitignore:
--------------------------------------------------------------------------------
1 | # 项目排除路径
2 | /target/


--------------------------------------------------------------------------------
/index.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/360595304/JavaWeb/HEAD/index.png


--------------------------------------------------------------------------------
/src/main/webapp/static/css/base.css:
--------------------------------------------------------------------------------
1 | body {
2 |     background-image: url("../images/background.png");
3 | }
4 | 


--------------------------------------------------------------------------------
/src/main/webapp/static/images/background.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/360595304/JavaWeb/HEAD/src/main/webapp/static/images/background.png


--------------------------------------------------------------------------------
/src/main/resources/db.properties:
--------------------------------------------------------------------------------
1 | driver = com.mysql.cj.jdbc.Driver
2 | url = jdbc:mysql://localhost:3306/store?characterEncoding=utf8
3 | username = root
4 | password = su360595304


--------------------------------------------------------------------------------
/src/main/java/com/hu/service/UserService.java:
--------------------------------------------------------------------------------
1 | package com.hu.service;
2 | 
3 | import com.hu.entiry.User;
4 | 
5 | public interface UserService {
6 |     User login(String username, String password);
7 | }
8 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # JavaWeb
 2 | servlet+jsp实现的简易图书管理系统<br/>
 3 | 开发环境：Tomcat 9.0.37，IDEA2021，JDK 1.8，MySQL 8.0<br/>
 4 | 
 5 | ### 运行步骤
 6 | - 导入sql文件
 7 | - 运行项目
 8 | - 默认用户名密码都是admin
 9 | ### 运行截图
10 | ![index](./index.png)
11 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/dao/UserDao.java:
--------------------------------------------------------------------------------
1 | package com.hu.dao;
2 | 
3 | import com.hu.entiry.User;
4 | 
5 | public interface UserDao {
6 |     boolean login(String username, String password);
7 |     User getByName(String username);
8 | }
9 | 


--------------------------------------------------------------------------------
/src/main/webapp/static/css/login.css:
--------------------------------------------------------------------------------
 1 | .form-login {
 2 |     margin: 50px auto;
 3 |     width: 420px;
 4 | 
 5 | }
 6 | .container {
 7 |     border: black 1px solid;
 8 |     text-align: center;
 9 |     margin: 50px auto 0 auto;
10 |     width: 40%;
11 |     border-radius: 10px;
12 |     box-shadow: #59a9fa 0 0 30px 5px;
13 | }
14 | .header {
15 |     margin-top: 150px;
16 | }
17 | .header h1 {
18 |     text-align: center;
19 | }


--------------------------------------------------------------------------------
/src/main/java/com/hu/dao/BookDao.java:
--------------------------------------------------------------------------------
 1 | package com.hu.dao;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | 
 5 | import java.util.List;
 6 | 
 7 | public interface BookDao {
 8 | 
 9 |     List<Book> getBookList(int current, int size, String key);
10 | 
11 |     int getTotal(int current, int size, String key);
12 | 
13 |     void updateBook(Book book);
14 | 
15 |     void deleteBook(int id);
16 | 
17 |     void insertBook(Book book);
18 | 
19 |     Book getBookById(int id);
20 | }
21 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/service/BookService.java:
--------------------------------------------------------------------------------
 1 | package com.hu.service;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | 
 5 | import java.util.List;
 6 | 
 7 | /**
 8 |  * @author suhu
 9 |  * @createDate 2021/12/2
10 |  */
11 | public interface BookService {
12 | 
13 |     List<Book> getBookList(int current, int size, String key);
14 | 
15 |     int getTotal(int current, int size, String key);
16 | 
17 |     void addBook(Book book);
18 | 
19 |     void removeBook(int id);
20 | 
21 |     void updateBook(Book book);
22 | 
23 |     Book getById(int id);
24 | }
25 | 


--------------------------------------------------------------------------------
/src/test/java/GetBookTest.java:
--------------------------------------------------------------------------------
 1 | import com.hu.dao.BookDao;
 2 | import com.hu.dao.impl.BookDaoImpl;
 3 | import com.hu.entiry.Book;
 4 | import org.junit.jupiter.api.Test;
 5 | 
 6 | import java.util.List;
 7 | 
 8 | /**
 9 |  * @author suhu
10 |  * @createDate 2021/11/21
11 |  */
12 | public class GetBookTest {
13 |     private final BookDao bookDao = new BookDaoImpl();
14 | 
15 |     @Test
16 |     public void test() {
17 |         List<Book> bookList = bookDao.getBookList(1, 1, null);
18 |         bookList.forEach(System.out::println);
19 |     }
20 | }
21 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/filter/EncodingFilter.java:
--------------------------------------------------------------------------------
 1 | package com.hu.filter;
 2 | 
 3 | import javax.servlet.*;
 4 | import javax.servlet.annotation.*;
 5 | import java.io.IOException;
 6 | 
 7 | @WebFilter(filterName = "EncodingFilter")
 8 | public class EncodingFilter implements Filter {
 9 |     public void init(FilterConfig config) throws ServletException {
10 |     }
11 | 
12 |     public void destroy() {
13 |     }
14 | 
15 |     @Override
16 |     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
17 |         request.setCharacterEncoding("UTF-8");
18 | //        response.setContentType("text/html;charset=utf-8");
19 |         chain.doFilter(request, response);
20 |     }
21 | }
22 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/LogoutServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import javax.servlet.*;
 4 | import javax.servlet.http.*;
 5 | import javax.servlet.annotation.*;
 6 | import java.io.IOException;
 7 | 
 8 | @WebServlet(name = "LogoutServlet", value = "/LogoutServlet")
 9 | public class LogoutServlet extends HttpServlet {
10 |     @Override
11 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
12 |         request.getSession().removeAttribute("userInfo");
13 |         response.sendRedirect(request.getContextPath() + "/login.jsp");
14 |     }
15 | 
16 |     @Override
17 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
18 | 
19 |     }
20 | }
21 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/service/impl/UserServiceImpl.java:
--------------------------------------------------------------------------------
 1 | package com.hu.service.impl;
 2 | 
 3 | import com.hu.dao.UserDao;
 4 | import com.hu.dao.impl.UserDaoImpl;
 5 | import com.hu.entiry.User;
 6 | import com.hu.service.UserService;
 7 | 
 8 | /**
 9 |  * @author suhu
10 |  * @createDate 2021/12/2
11 |  */
12 | public class UserServiceImpl implements UserService {
13 | 
14 |     private final UserDao userDao = new UserDaoImpl();
15 | 
16 |     public User login(String username, String password) {
17 |         if (userDao.getByName(username) == null) {
18 |             throw new RuntimeException("用户名不存在");
19 |         }
20 |         if (userDao.login(username, password)) {
21 |             return userDao.getByName(username);
22 |         } else {
23 |             throw new RuntimeException("请输入正确的密码");
24 |         }
25 |     }
26 | 
27 | }
28 | 


--------------------------------------------------------------------------------
/src/main/webapp/WEB-INF/web.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
 5 |          version="4.0">
 6 |     <filter>
 7 |         <filter-name>EncodingFilter</filter-name>
 8 |         <filter-class>com.hu.filter.EncodingFilter</filter-class>
 9 |     </filter>
10 |     <filter-mapping>
11 |         <filter-name>EncodingFilter</filter-name>
12 |         <url-pattern>/*</url-pattern>
13 |     </filter-mapping>
14 | 
15 |     <mime-mapping>
16 |         <extension>css</extension>
17 |         <mime-type>text/css;charset=utf-8</mime-type>
18 |     </mime-mapping>
19 |     <mime-mapping>
20 |         <extension>js</extension>
21 |         <mime-type>application/javascript</mime-type>
22 |     </mime-mapping>
23 | </web-app>


--------------------------------------------------------------------------------
/src/main/java/com/hu/entiry/User.java:
--------------------------------------------------------------------------------
 1 | package com.hu.entiry;
 2 | 
 3 | /**
 4 |  * @author suhu
 5 |  * @createDate 2021/11/25
 6 |  */
 7 | public class User {
 8 |     private int id;
 9 |     private String username;
10 |     private String role;
11 | 
12 |     public int getId() {
13 |         return id;
14 |     }
15 | 
16 |     public void setId(int id) {
17 |         this.id = id;
18 |     }
19 | 
20 |     public String getUsername() {
21 |         return username;
22 |     }
23 | 
24 |     public void setUsername(String username) {
25 |         this.username = username;
26 |     }
27 | 
28 |     public String getRole() {
29 |         return role;
30 |     }
31 | 
32 |     public void setRole(String role) {
33 |         this.role = role;
34 |     }
35 | 
36 |     public User() {
37 |     }
38 | 
39 |     public User(int id, String username, String role) {
40 |         this.id = id;
41 |         this.username = username;
42 |         this.role = role;
43 |     }
44 | }
45 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/DeleteServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.service.BookService;
 4 | import com.hu.service.impl.BookServiceImpl;
 5 | 
 6 | import javax.servlet.*;
 7 | import javax.servlet.http.*;
 8 | import javax.servlet.annotation.*;
 9 | import java.io.IOException;
10 | 
11 | @WebServlet(name = "DeleteServlet", value = "/DeleteServlet")
12 | public class DeleteServlet extends HttpServlet {
13 | 
14 |     private final BookService bookService = new BookServiceImpl();
15 | 
16 |     @Override
17 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
18 |         String id = request.getParameter("id");
19 |         bookService.removeBook(Integer.parseInt(id));
20 |         response.sendRedirect(request.getContextPath() + "/GetServlet");
21 |     }
22 | 
23 |     @Override
24 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
25 | 
26 |     }
27 | }
28 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/BookDetailServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | import com.hu.service.impl.BookServiceImpl;
 5 | 
 6 | import javax.servlet.*;
 7 | import javax.servlet.http.*;
 8 | import javax.servlet.annotation.*;
 9 | import java.io.IOException;
10 | 
11 | @WebServlet(name = "BookDetailServlet", value = "/BookDetailServlet")
12 | public class BookDetailServlet extends HttpServlet {
13 |     @Override
14 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
15 |         String id = request.getParameter("id");
16 |         int bookId = id == null ? 0 : Integer.parseInt(id);
17 |         BookServiceImpl bookService = new BookServiceImpl();
18 |         Book book = bookService.getById(bookId);
19 |         request.setAttribute("book", book);
20 |         request.getRequestDispatcher("/bookDetail.jsp").forward(request, response);
21 |     }
22 | 
23 |     @Override
24 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
25 | 
26 |     }
27 | }
28 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/GetOneServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | import com.hu.service.BookService;
 5 | import com.hu.service.impl.BookServiceImpl;
 6 | 
 7 | import javax.servlet.*;
 8 | import javax.servlet.http.*;
 9 | import javax.servlet.annotation.*;
10 | import java.io.IOException;
11 | 
12 | @WebServlet(name = "GetOneServlet", value = "/GetOneServlet")
13 | public class GetOneServlet extends HttpServlet {
14 | 
15 |     private final BookService bookService = new BookServiceImpl();
16 | 
17 |     @Override
18 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
19 |         String id = request.getParameter("id");
20 |         if (id == null || "".equals(id)) {
21 |             response.sendRedirect(request.getContextPath() + "/index.js");
22 |         }
23 |         Book book = bookService.getById(Integer.parseInt(id));
24 |         request.getSession().setAttribute("editBook", book);
25 |         response.sendRedirect(request.getContextPath() + "/updateBook.jsp");
26 |     }
27 | 
28 |     @Override
29 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
30 | 
31 |     }
32 | }
33 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/service/impl/BookServiceImpl.java:
--------------------------------------------------------------------------------
 1 | package com.hu.service.impl;
 2 | 
 3 | import com.hu.dao.BookDao;
 4 | import com.hu.dao.impl.BookDaoImpl;
 5 | import com.hu.entiry.Book;
 6 | import com.hu.service.BookService;
 7 | 
 8 | import java.util.List;
 9 | import java.util.UUID;
10 | 
11 | /**
12 |  * @author suhu
13 |  * @createDate 2021/12/2
14 |  */
15 | public class BookServiceImpl implements BookService {
16 | 
17 |     private final BookDao bookDao = new BookDaoImpl();
18 | 
19 | 
20 |     @Override
21 |     public List<Book> getBookList(int current, int size, String key) {
22 |         return bookDao.getBookList(current, size, key);
23 |     }
24 | 
25 |     @Override
26 |     public int getTotal(int current, int size, String key) {
27 |         return bookDao.getTotal(current, size, key);
28 |     }
29 | 
30 |     @Override
31 |     public void addBook(Book book) {
32 |         bookDao.insertBook(book);
33 |     }
34 | 
35 |     @Override
36 |     public void removeBook(int id) {
37 |         bookDao.deleteBook(id);
38 |     }
39 | 
40 |     @Override
41 |     public void updateBook(Book book) {
42 |         bookDao.updateBook(book);
43 |     }
44 | 
45 |     @Override
46 |     public Book getById(int id) {
47 |         return bookDao.getBookById(id);
48 |     }
49 | }
50 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/AddServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | import com.hu.service.BookService;
 5 | import com.hu.service.impl.BookServiceImpl;
 6 | 
 7 | import javax.servlet.*;
 8 | import javax.servlet.http.*;
 9 | import javax.servlet.annotation.*;
10 | import java.io.IOException;
11 | 
12 | @WebServlet(name = "AddServlet", value = "/AddServlet")
13 | public class AddServlet extends HttpServlet {
14 | 
15 |     private final BookService bookService = new BookServiceImpl();
16 | 
17 |     @Override
18 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
19 |         String name = request.getParameter("name");
20 |         String author = request.getParameter("author");
21 |         String price_s = request.getParameter("price");
22 |         double price = Double.parseDouble(price_s);
23 |         String press = request.getParameter("press");
24 |         String intro = request.getParameter("intro");
25 |         String isbn = request.getParameter("isbn");
26 |         Book book = new Book();
27 |         book.setName(name);
28 |         book.setAuthor(author);
29 |         book.setPrice(price);
30 |         book.setPress(press);
31 |         book.setIntro(intro);
32 |         book.setIsbn(isbn);
33 |         bookService.addBook(book);
34 |         response.sendRedirect(request.getContextPath() + "/GetServlet");
35 |     }
36 | 
37 |     @Override
38 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
39 | 
40 |     }
41 | }
42 | 


--------------------------------------------------------------------------------
/src/main/webapp/bookDetail.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 2 | <html>
 3 | <head>
 4 |     <title>书籍详情</title>
 5 |     <style>
 6 |         .container {
 7 |             /*background-color: #e3cfcf;*/
 8 |             margin: 150px auto;
 9 |             width: 80%;
10 |             height: 500px;
11 |             text-align: center;
12 |         }
13 | 
14 |         .msg {
15 |             width: 50%;
16 |             /*background-color: #59a9fa;*/
17 |             margin: auto;
18 |             text-align: left;
19 |         }
20 | 
21 |         .p1 {
22 |             font-size: 20px;
23 |             height: 50px;
24 |         }
25 |     </style>
26 | </head>
27 | <body>
28 | <div class="container">
29 |     <h1>《${requestScope.book.name}》</h1>
30 |     <div class="msg">
31 |         <p style="text-align: left; font-size: 22px">${requestScope.book.intro}</p>
32 |         <div style="float: left; width: 400px">
33 |             <div class="p1">
34 |                 作者：${requestScope.book.author}
35 |             </div>
36 |             <div class="p1">
37 |                 出版社：${requestScope.book.press}
38 |             </div>
39 | 
40 |         </div>
41 |         <div>
42 |             <div class="p1">
43 |                 ISBN：${requestScope.book.isbn}
44 |             </div>
45 |             <div class="p1">
46 |                 单价：${requestScope.book.price}
47 |             </div>
48 |         </div>
49 |     </div>
50 |     <button onclick="back()">返回</button>
51 | </div>
52 | <script>
53 |     function back() {
54 |         window.location =  "index.jsp"
55 |     }
56 | </script>
57 | </body>
58 | 
59 | </html>
60 | 


--------------------------------------------------------------------------------
/src/main/webapp/login.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 2 | <html>
 3 | <head>
 4 |     <title>登陆</title>
 5 | </head>
 6 | <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
 7 | <link href="static/css/login.css" rel="stylesheet">
 8 | <link rel="stylesheet" href="static/css/base.css">
 9 | <body>
10 | <div class="header">
11 |     <h1>图书管理系统</h1>
12 | </div>
13 | <div class="container">
14 | 
15 | 
16 |     <div class="form-login">
17 |         <form class="form-horizontal" action="${pageContext.request.contextPath}/LoginServlet" method="post">
18 |             <div class="form-group">
19 |                 <label for="inputUsername" class="col-sm-2 control-label">用户名</label>
20 |                 <div class="col-sm-10">
21 |                     <input type="text" class="form-control" id="inputUsername" placeholder="请输入用户名" name="username">
22 |                 </div>
23 |             </div>
24 |             <div class="form-group">
25 |                 <label for="inputPassword" class="col-sm-2 control-label">密码</label>
26 |                 <div class="col-sm-10">
27 |                     <input type="password" class="form-control" id="inputPassword" placeholder="请输入密码" name="password">
28 |                 </div>
29 |             </div>
30 |             <div class="form-group">
31 |                 <div class="col-sm-offset-2 col-sm-1">
32 |                     <button type="submit" class="btn btn-default">登陆</button>
33 |                 </div>
34 |             </div>
35 |         </form>
36 |         <div style="color: red">${requestScope.msg}</div>
37 |     </div>
38 | </div>
39 | </body>
40 | </html>
41 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/filter/LoginFilter.java:
--------------------------------------------------------------------------------
 1 | package com.hu.filter;
 2 | 
 3 | import com.hu.entiry.User;
 4 | 
 5 | import javax.servlet.*;
 6 | import javax.servlet.annotation.*;
 7 | import javax.servlet.http.HttpServlet;
 8 | import javax.servlet.http.HttpServletRequest;
 9 | import javax.servlet.http.HttpSession;
10 | import java.io.IOException;
11 | 
12 | @WebFilter(filterName = "LoginFilter", value = "/*")
13 | public class LoginFilter implements Filter {
14 |     public void init(FilterConfig config) throws ServletException {
15 |     }
16 | 
17 |     public void destroy() {
18 |     }
19 | 
20 |     @Override
21 |     public void doFilter(ServletRequest rq, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
22 |         HttpServletRequest request = (HttpServletRequest) rq;
23 |         String uri = request.getRequestURI();
24 |         System.out.println("uri: " + uri);
25 |         // 验证请求路径
26 |         if (uri.contains("login.jsp") || uri.contains("Login") || uri.endsWith(".css") || uri.endsWith(".js")
27 |                 || uri.endsWith(".jpg") || uri.endsWith(".png")) {
28 |             chain.doFilter(rq, resp);
29 |         } else {
30 |             HttpSession session = request.getSession();
31 |             User userInfo = (User) session.getAttribute("userInfo");
32 |             if (userInfo != null) {
33 |                 System.out.println("ROLE = " + userInfo.getRole());
34 |                 chain.doFilter(rq, resp);
35 |             } else {
36 |                 request.setAttribute("login_msg", "您尚未登陆，请先登陆！");
37 |                 request.getRequestDispatcher("/login.jsp").forward(request, resp);
38 |             }
39 |         }
40 |     }
41 | }
42 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/UpdateServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | import com.hu.service.BookService;
 5 | import com.hu.service.impl.BookServiceImpl;
 6 | 
 7 | import javax.servlet.*;
 8 | import javax.servlet.http.*;
 9 | import javax.servlet.annotation.*;
10 | import java.io.IOException;
11 | import java.util.List;
12 | 
13 | @WebServlet(name = "UpdateServlet", value = "/UpdateServlet")
14 | public class UpdateServlet extends HttpServlet {
15 | 
16 |     private final BookService bookService = new BookServiceImpl();
17 | 
18 |     @Override
19 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
20 |         String id = request.getParameter("id");
21 |         String name = request.getParameter("name");
22 |         String author = request.getParameter("author");
23 |         String price = request.getParameter("price");
24 |         String press = request.getParameter("press");
25 |         String isbn = request.getParameter("isbn");
26 |         String intro = request.getParameter("intro");
27 |         Book book = new Book(Integer.parseInt(id), name, author, Double.parseDouble(price), press, isbn, intro);
28 |         System.out.println(book);
29 |         bookService.updateBook(book);
30 |         List<Book> bookList = bookService.getBookList(1, 10, null);
31 |         request.getSession().setAttribute("bookList", bookList);
32 |         response.sendRedirect(request.getContextPath() + "/index.jsp");
33 |     }
34 | 
35 |     @Override
36 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
37 | 
38 |     }
39 | }
40 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/LoginServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.User;
 4 | import com.hu.service.UserService;
 5 | import com.hu.service.impl.UserServiceImpl;
 6 | 
 7 | import javax.servlet.*;
 8 | import javax.servlet.http.*;
 9 | import javax.servlet.annotation.*;
10 | import java.io.IOException;
11 | import java.io.PrintWriter;
12 | 
13 | @WebServlet(name = "LoginServlet", value = "/LoginServlet")
14 | public class LoginServlet extends HttpServlet {
15 |     private final UserService userService = new UserServiceImpl();
16 | 
17 |     @Override
18 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
19 | 
20 |     }
21 | 
22 |     @Override
23 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
24 |         String username = request.getParameter("username");
25 |         String password = request.getParameter("password");
26 |         System.out.println("username: " + username);
27 |         System.out.println("password: " + password);
28 |         User user;
29 |         try {
30 |             user = userService.login(username, password);
31 |             HttpSession session = request.getSession();
32 |             session.setAttribute("userInfo", user);
33 |             response.sendRedirect(request.getContextPath() + "/GetServlet");
34 |         } catch (RuntimeException e) {
35 |             String msg = e.getMessage();
36 |             System.out.println(msg);
37 |             request.setAttribute("msg", msg);
38 |             request.getRequestDispatcher("/login.jsp").forward(request, response);
39 |         }
40 |     }
41 | }
42 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/servlet/GetServlet.java:
--------------------------------------------------------------------------------
 1 | package com.hu.servlet;
 2 | 
 3 | import com.hu.entiry.Book;
 4 | import com.hu.service.BookService;
 5 | import com.hu.service.impl.BookServiceImpl;
 6 | 
 7 | import javax.servlet.*;
 8 | import javax.servlet.http.*;
 9 | import javax.servlet.annotation.*;
10 | import java.io.IOException;
11 | import java.util.List;
12 | 
13 | @WebServlet(name = "GetServlet", value = "/GetServlet")
14 | public class GetServlet extends HttpServlet {
15 | 
16 |     private final BookService bookService = new BookServiceImpl();
17 | 
18 |     @Override
19 |     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
20 |         String current = request.getParameter("current");
21 |         String size = request.getParameter("size");
22 |         int c, s;
23 |         if (current == null || "".equals(current)) {
24 |             c = 1;
25 |         } else {
26 |             c = Integer.parseInt(current);
27 |         }
28 |         if (size == null || "".equals(size)) {
29 |             s = 10;
30 |         } else {
31 |             s = Integer.parseInt(size);
32 |         }
33 |         String key = request.getParameter("key");
34 |         List<Book> bookList = bookService.getBookList(c, s, key);
35 |         int total = bookService.getTotal(c, s, key);
36 |         int page = (total - 1) / 10 + 1;
37 |         request.getSession().setAttribute("bookList", bookList);
38 |         request.getSession().setAttribute("page", page);
39 |         request.getSession().setAttribute("current", c);
40 |         response.sendRedirect(request.getContextPath() + "/index.jsp");
41 |     }
42 | 
43 |     @Override
44 |     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
45 | 
46 |     }
47 | }
48 | 


--------------------------------------------------------------------------------
/src/main/webapp/static/css/index.css:
--------------------------------------------------------------------------------
  1 | .container {
  2 |     text-align: center;
  3 | }
  4 | 
  5 | body {
  6 |     background-color: #F5F5F5;
  7 | }
  8 | 
  9 | #s1 {
 10 |     margin: 0 10px;
 11 |     color: #ccc;
 12 | }
 13 | 
 14 | #lead {
 15 |     height: 25px;
 16 |     background-color: #E2E3E4FF;
 17 |     text-align: right;
 18 | }
 19 | #lead a {
 20 |     margin-right: 20px;
 21 | }
 22 | .edit {
 23 |     display: none;
 24 | }
 25 | 
 26 | .edit input {
 27 |     width: 50px;
 28 | 
 29 | }
 30 | 
 31 | 
 32 | #p0 {
 33 |     display: block;
 34 |     margin-block-start: 1em;
 35 |     margin-block-end: 1em;
 36 |     margin-inline-start: 0;
 37 |     margin-inline-end: 0;
 38 |     font-size: 13px;
 39 |     margin-top: 2px;
 40 | }
 41 | 
 42 | #p0 a {
 43 |     color: #666;
 44 |     text-decoration: none;
 45 | }
 46 | 
 47 | .search {
 48 |     margin: 30px auto;
 49 | }
 50 | 
 51 | .right {
 52 |     float: right;
 53 | }
 54 | .search input:first-child {
 55 |     width: 400px;
 56 |     height: 30px;
 57 | }
 58 | 
 59 | .search button {
 60 |     width: 60px;
 61 |     height: 30px;
 62 | }
 63 | 
 64 | .bookList {
 65 |     margin: auto;
 66 |     text-align: left;
 67 |     height: 600px;
 68 | }
 69 | 
 70 | td {
 71 |     font-size: 16px;
 72 | }
 73 | 
 74 | 
 75 | .bookItem > img {
 76 |     height: 70%;
 77 |     width: 90%;
 78 |     margin-top: 5px;
 79 | }
 80 | 
 81 | .bookItem > .title {
 82 |     margin-top: 10px;
 83 |     font-family: 宋体, ui-monospace;
 84 | }
 85 | 
 86 | .bookItem > .author {
 87 |     margin-top: 5px;
 88 |     font-family: 宋体, ui-monospace;
 89 |     color: #a9a9a9;
 90 | }
 91 | 
 92 | .bookItem .discount {
 93 |     font-family: Arial, ui-monospace;
 94 |     color: red;
 95 | }
 96 | 
 97 | .bookItem .original {
 98 |     font-family: Arial, ui-monospace;
 99 |     color: #a9a9a9;
100 |     text-decoration-line: line-through;
101 | }
102 | 
103 | .footer {
104 |     width: 100%;
105 |     float: left;
106 |     margin-top: 50px;
107 |     margin-bottom: 20px;
108 | }


--------------------------------------------------------------------------------
/src/main/java/com/hu/dao/impl/UserDaoImpl.java:
--------------------------------------------------------------------------------
 1 | package com.hu.dao.impl;
 2 | 
 3 | import com.hu.dao.UserDao;
 4 | import com.hu.entiry.User;
 5 | import com.hu.utils.JDBCUtil;
 6 | 
 7 | import java.sql.Connection;
 8 | import java.sql.PreparedStatement;
 9 | import java.sql.ResultSet;
10 | import java.sql.SQLException;
11 | import java.util.Objects;
12 | 
13 | /**
14 |  * @author suhu
15 |  * @createDate 2021/11/21
16 |  */
17 | public class UserDaoImpl implements UserDao {
18 |     @Override
19 |     public boolean login(String username, String password) {
20 |         Connection connection = JDBCUtil.getConnection();
21 |         String sql = "select * from user where username=? and password=?";
22 |         PreparedStatement ps = null;
23 |         ResultSet set = null;
24 |         try {
25 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
26 |             ps.setString(1, username);
27 |             ps.setString(2, password);
28 |             set = ps.executeQuery();
29 |             if (set.next()) return true;
30 |         } catch (SQLException e) {
31 |             e.printStackTrace();
32 |         } finally {
33 |             JDBCUtil.closeAll(connection, ps, set);
34 |         }
35 |         return false;
36 |     }
37 | 
38 |     @Override
39 |     public User getByName(String username) {
40 |         Connection connection = JDBCUtil.getConnection();
41 |         String sql = "select * from user where username=?";
42 |         PreparedStatement ps = null;
43 |         ResultSet set = null;
44 |         try {
45 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
46 |             ps.setString(1, username);
47 |             set = ps.executeQuery();
48 |             if (set.next()) {
49 |                 int id = set.getInt("id");
50 |                 String role = set.getString("role");
51 |                 return new User(id, username, role);
52 |             } else
53 |                 return null;
54 |         } catch (SQLException e) {
55 |             e.printStackTrace();
56 |         } finally {
57 |             JDBCUtil.closeAll(connection, ps, set);
58 |         }
59 |         return null;
60 |     }
61 | }
62 | 


--------------------------------------------------------------------------------
/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <modelVersion>4.0.0</modelVersion>
 6 | 
 7 |     <groupId>com.hu</groupId>
 8 |     <artifactId>final</artifactId>
 9 |     <version>1.0-SNAPSHOT</version>
10 |     <name>final</name>
11 |     <packaging>war</packaging>
12 | 
13 |     <properties>
14 |         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
15 |         <maven.compiler.target>1.8</maven.compiler.target>
16 |         <maven.compiler.source>1.8</maven.compiler.source>
17 |         <junit.version>5.7.1</junit.version>
18 |     </properties>
19 | 
20 |     <dependencies>
21 |         <dependency>
22 |             <groupId>javax.servlet</groupId>
23 |             <artifactId>javax.servlet-api</artifactId>
24 |             <version>4.0.1</version>
25 |             <scope>provided</scope>
26 |         </dependency>
27 |         <dependency>
28 |             <groupId>org.junit.jupiter</groupId>
29 |             <artifactId>junit-jupiter-api</artifactId>
30 |             <version>${junit.version}</version>
31 |             <scope>test</scope>
32 |         </dependency>
33 |         <dependency>
34 |             <groupId>org.junit.jupiter</groupId>
35 |             <artifactId>junit-jupiter-engine</artifactId>
36 |             <version>${junit.version}</version>
37 |             <scope>test</scope>
38 |         </dependency>
39 |         <dependency>
40 |             <groupId>mysql</groupId>
41 |             <artifactId>mysql-connector-java</artifactId>
42 |             <version>8.0.27</version>
43 |         </dependency>
44 |         <dependency>
45 |             <groupId>javax.servlet</groupId>
46 |             <artifactId>jstl</artifactId>
47 |             <version>1.2</version>
48 |         </dependency>
49 |     </dependencies>
50 | 
51 |     <build>
52 |         <plugins>
53 |             <plugin>
54 |                 <groupId>org.apache.maven.plugins</groupId>
55 |                 <artifactId>maven-war-plugin</artifactId>
56 |                 <version>3.3.1</version>
57 |             </plugin>
58 |         </plugins>
59 |     </build>
60 | </project>


--------------------------------------------------------------------------------
/src/main/java/com/hu/entiry/Book.java:
--------------------------------------------------------------------------------
 1 | package com.hu.entiry;
 2 | 
 3 | /**
 4 |  * @author suhu
 5 |  * @createDate 2021/11/21
 6 |  */
 7 | public class Book {
 8 |     private int id;
 9 |     private String name;
10 |     private String author;
11 |     private double price;
12 |     private String press;
13 |     private String isbn;
14 |     private String intro;
15 | 
16 |     public int getId() {
17 |         return id;
18 |     }
19 | 
20 |     public void setId(int id) {
21 |         this.id = id;
22 |     }
23 | 
24 |     public String getName() {
25 |         return name;
26 |     }
27 | 
28 |     public void setName(String name) {
29 |         this.name = name;
30 |     }
31 | 
32 |     public String getAuthor() {
33 |         return author;
34 |     }
35 | 
36 |     public void setAuthor(String author) {
37 |         this.author = author;
38 |     }
39 | 
40 |     public double getPrice() {
41 |         return price;
42 |     }
43 | 
44 |     public void setPrice(double price) {
45 |         this.price = price;
46 |     }
47 | 
48 |     public String getPress() {
49 |         return press;
50 |     }
51 | 
52 |     public void setPress(String press) {
53 |         this.press = press;
54 |     }
55 | 
56 |     public String getIntro() {
57 |         return intro;
58 |     }
59 | 
60 |     public void setIntro(String intro) {
61 |         this.intro = intro;
62 |     }
63 | 
64 |     public String getIsbn() {
65 |         return isbn;
66 |     }
67 | 
68 |     public void setIsbn(String isbn) {
69 |         this.isbn = isbn;
70 |     }
71 | 
72 |     public Book() {
73 |     }
74 | 
75 |     @Override
76 |     public String toString() {
77 |         return "Book{" +
78 |                 "id=" + id +
79 |                 ", name='" + name + '\'' +
80 |                 ", author='" + author + '\'' +
81 |                 ", price=" + price +
82 |                 ", press='" + press + '\'' +
83 |                 ", isbn='" + isbn + '\'' +
84 |                 ", intro='" + intro + '\'' +
85 |                 '}';
86 |     }
87 | 
88 |     public Book(int id, String name, String author, double price, String press, String isbn, String intro) {
89 |         this.id = id;
90 |         this.name = name;
91 |         this.author = author;
92 |         this.price = price;
93 |         this.press = press;
94 |         this.isbn = isbn;
95 |         this.intro = intro;
96 |     }
97 | }
98 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/utils/JDBCUtil.java:
--------------------------------------------------------------------------------
  1 | package com.hu.utils;
  2 | 
  3 | import java.io.IOException;
  4 | import java.io.InputStream;
  5 | import java.sql.*;
  6 | import java.util.Properties;
  7 | 
  8 | /**
  9 |  * @author suhu
 10 |  * @createDate 2021/11/21
 11 |  */
 12 | public class JDBCUtil {
 13 |     private static String URL;
 14 |     private static String USERNAME;
 15 |     private static String PASSWORD;
 16 | 
 17 |     // 静态代码块，类加载时执行
 18 |     static {
 19 |         try {
 20 |             Properties properties = new Properties();
 21 |             InputStream in = JDBCUtil.class.getClassLoader().getResourceAsStream("db.properties");
 22 |             try {
 23 |                 properties.load(in);
 24 |             } catch (IOException e) {
 25 |                 e.printStackTrace();
 26 |             }
 27 |             String DRIVER = properties.getProperty("driver");
 28 |             URL = properties.getProperty("url");
 29 |             USERNAME = properties.getProperty("username");
 30 |             PASSWORD = properties.getProperty("password");
 31 |             Class.forName(DRIVER);
 32 |         } catch (ClassNotFoundException e) {
 33 |             e.printStackTrace();
 34 |         }
 35 |     }
 36 | 
 37 |     static ThreadLocal<Connection> local = new ThreadLocal<>();
 38 | 
 39 |     public static Connection getConnection() {
 40 |         try {
 41 |             //从ThreadLocal中取对象
 42 |             Connection connection = local.get();
 43 |             //判断ThreadLocal中是否为空
 44 |             if (connection == null) {
 45 |                 connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
 46 |                 local.set(connection);
 47 |                 return connection;
 48 |             } else
 49 |                 return local.get();
 50 |         } catch (SQLException throwables) {
 51 |             throwables.printStackTrace();
 52 |         }
 53 |         return null;
 54 |     }
 55 | 
 56 |     // 关闭资源
 57 |     public static void closeAll(Connection conn, Statement stat, ResultSet rs) {
 58 |         try {
 59 |             if (conn != null) {
 60 |                 conn.close();
 61 |                 local.remove();
 62 |             }
 63 |             if (stat != null) stat.close();
 64 |             if (rs != null) rs.close();
 65 |         } catch (SQLException throwables) {
 66 |             throwables.printStackTrace();
 67 |         }
 68 |     }
 69 | 
 70 |     //开启事务
 71 |     public static void begin() {
 72 |         Connection connection;
 73 |         try {
 74 |             connection = getConnection();
 75 |             connection.setAutoCommit(false);
 76 |         } catch (SQLException throwables) {
 77 |             throwables.printStackTrace();
 78 |         }
 79 |     }
 80 | 
 81 |     // 提交事务
 82 |     public static void commit() {
 83 |         Connection connection = null;
 84 |         try {
 85 |             connection = getConnection();
 86 |             connection.commit();
 87 |         } catch (SQLException throwables) {
 88 |             throwables.printStackTrace();
 89 |         } finally {
 90 |             closeAll(connection, null, null);
 91 |         }
 92 |     }
 93 | 
 94 |     // 回滚
 95 |     public static void rollback() {
 96 |         Connection connection = null;
 97 |         try {
 98 |             connection = getConnection();
 99 |             connection.rollback();
100 |         } catch (SQLException throwables) {
101 |             throwables.printStackTrace();
102 |         } finally {
103 |             closeAll(connection, null, null);
104 |         }
105 |     }
106 | }
107 | 


--------------------------------------------------------------------------------
/src/main/webapp/addBook.jsp:
--------------------------------------------------------------------------------
 1 | <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 2 | <html>
 3 | <head>
 4 |     <title>添加书籍</title>
 5 |     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
 6 |           integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
 7 |     <style>
 8 |         .container {
 9 |             margin: 200px auto 0 auto;
10 |         }
11 | 
12 |         .form-add {
13 |             width: 500px;
14 |             margin: auto;
15 |         }
16 |     </style>
17 | </head>
18 | <body>
19 | <div class="container">
20 |     <div class="form-add">
21 |         <h2 align="center">添加书籍</h2>
22 |         <form class="form-horizontal" action="<%=request.getContextPath()%>/AddServlet" id="addForm">
23 |             <div class="form-group">
24 |                 <label for="inputUsername" class="col-sm-2 control-label">书名</label>
25 |                 <div class="col-sm-10">
26 |                     <input type="text" class="form-control" id="inputUsername" placeholder="请输入书名" name="name">
27 |                 </div>
28 |             </div>
29 |             <div class="form-group">
30 |                 <label for="inputPassword" class="col-sm-2 control-label">作者</label>
31 |                 <div class="col-sm-10">
32 |                     <input type="text" class="form-control" id="inputPassword" placeholder="请输入作者" name="author">
33 |                 </div>
34 |             </div>
35 |             <div class="form-group">
36 |                 <label for="inputPrice" class="col-sm-2 control-label">价格</label>
37 |                 <div class="col-sm-10">
38 |                     <input type="text" class="form-control" id="inputPrice" placeholder="请输入价格" name="price">
39 |                 </div>
40 |             </div>
41 |             <div class="form-group">
42 |                 <label for="inputPress" class="col-sm-2 control-label">出版社</label>
43 |                 <div class="col-sm-10">
44 |                     <input type="text" class="form-control" id="inputPress" placeholder="请输入出版社" name="press">
45 |                 </div>
46 |             </div>
47 |             <div class="form-group">
48 |                 <label for="inputIsbn" class="col-sm-2 control-label">ISBN号</label>
49 |                 <div class="col-sm-10">
50 |                     <input type="text" class="form-control" id="inputIsbn" placeholder="请输入ISBN号" name="isbn">
51 |                 </div>
52 |             </div>
53 |             <div class="form-group">
54 |                 <label for="inputIntro" class="col-sm-2 control-label">简介</label>
55 |                 <div class="col-sm-10">
56 |                     <textarea class="form-control" id="inputIntro" placeholder="请输入简介" name="intro"></textarea>
57 |                 </div>
58 |             </div>
59 |             <div class="form-group">
60 |                 <div class="col-sm-offset-2 col-sm-5">
61 |                     <button type="button" onclick="back()">取消</button>
62 |                     <button type="reset">全部清除</button>
63 |                     <button type="button" onclick="check()">提交</button>
64 |                 </div>
65 |             </div>
66 |         </form>
67 | 
68 |     </div>
69 | </div>
70 | <script>
71 |     function back() {
72 |         window.location = "index.jsp"
73 |     }
74 | 
75 |     function check() {
76 |         const form = document.getElementsByTagName("input")
77 |         for (let i = 0; i < form.length; i++) {
78 |             const value = form[i].value
79 |             if (value === "") {
80 |                 form[i].focus()
81 |                 return
82 |             }
83 | 
84 |         }
85 |         if (isNaN(Number(form[2].value))) {
86 |             window.alert("请输入正确的价格！")
87 |             form[2].focus()
88 |             return
89 |         }
90 | 
91 |         document.getElementById("addForm").submit()
92 |     }
93 | </script>
94 | </body>
95 | </html>
96 | 


--------------------------------------------------------------------------------
/src/main/webapp/updateBook.jsp:
--------------------------------------------------------------------------------
  1 | <%@ page contentType="text/html;charset=UTF-8" language="java" %>
  2 | <html>
  3 | <head>
  4 |     <title>修改书籍</title>
  5 | 
  6 |     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
  7 |           integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
  8 |     <style>
  9 |         .hide {
 10 |             display: none;
 11 |         }
 12 | 
 13 |         .container {
 14 |             margin: 200px auto 0 auto;
 15 |         }
 16 | 
 17 |         .form-edit {
 18 |             width: 500px;
 19 |             margin: auto;
 20 |         }
 21 |     </style>
 22 | </head>
 23 | <body>
 24 | <div class="container">
 25 |     <div class="form-edit">
 26 |         <h2 align="center">修改书籍</h2>
 27 |         <form class="form-horizontal" action="<%=request.getContextPath()%>/UpdateServlet" id="editForm">
 28 |             <input type="text" value="${sessionScope.editBook.id}" name="id" class="hide">
 29 |             <div class="form-group">
 30 |                 <label for="inputUsername" class="col-sm-2 control-label">书名</label>
 31 |                 <div class="col-sm-10">
 32 |                     <input type="text" value="${sessionScope.editBook.name}" class="form-control" id="inputUsername"
 33 |                            placeholder="请输入书名" name="name">
 34 |                 </div>
 35 |             </div>
 36 |             <div class="form-group">
 37 |                 <label for="inputPassword" class="col-sm-2 control-label">作者</label>
 38 |                 <div class="col-sm-10">
 39 |                     <input type="text" value="${sessionScope.editBook.author}" class="form-control" id="inputPassword"
 40 |                            placeholder="请输入作者" name="author">
 41 |                 </div>
 42 |             </div>
 43 |             <div class="form-group">
 44 |                 <label for="inputPrice" class="col-sm-2 control-label">价格</label>
 45 |                 <div class="col-sm-10">
 46 |                     <input type="text" value="${sessionScope.editBook.price}" class="form-control" id="inputPrice"
 47 |                            placeholder="请输入价格" name="price">
 48 |                 </div>
 49 |             </div>
 50 |             <div class="form-group">
 51 |                 <label for="inputPress" class="col-sm-2 control-label">出版社</label>
 52 |                 <div class="col-sm-10">
 53 |                     <input type="text" value="${sessionScope.editBook.press}" class="form-control" id="inputPress"
 54 |                            placeholder="请输入出版社" name="press">
 55 |                 </div>
 56 |             </div>
 57 |             <div class="form-group">
 58 |                 <label for="inputIsbn" class="col-sm-2 control-label">ISBN号</label>
 59 |                 <div class="col-sm-10">
 60 |                     <input type="text" value="${sessionScope.editBook.isbn}" class="form-control" id="inputIsbn"
 61 |                            placeholder="请输入ISBN号" name="isbn">
 62 |                 </div>
 63 |             </div>
 64 |             <div class="form-group">
 65 |                 <label for="inputIntro" class="col-sm-2 control-label">简介</label>
 66 |                 <div class="col-sm-10">
 67 |                     <input type="text" value="${sessionScope.editBook.intro}" class="form-control" id="inputIntro" placeholder="请输入简介" name="intro"/>
 68 |                 </div>
 69 |             </div>
 70 |             <%--            <input type="text" value="${sessionScope.editBook.picUrl}" name="picUrl" class="hide"><br>--%>
 71 |             <div class="form-group">
 72 |                 <div class="col-sm-offset-2 col-sm-5">
 73 |                     <button onclick="back()">取消</button>
 74 |                     <button type="reset">还原修改</button>
 75 |                     <button type="button" onclick="check()">提交</button>
 76 |                 </div>
 77 |             </div>
 78 |         </form>
 79 |     </div>
 80 | </div>
 81 | 
 82 | <script>
 83 |     function back() {
 84 |         window.location = "index.jsp"
 85 |     }
 86 | 
 87 |     function check() {
 88 |         const form = document.getElementsByTagName("input")
 89 |         for (let i = 0; i < form.length; i++) {
 90 |             const value = form[i].value
 91 |             console.log(value)
 92 |             if (value === "") {
 93 |                 form[i].focus()
 94 |                 return
 95 |             }
 96 |         }
 97 |         if (isNaN(Number(form[3].value))) {
 98 |             window.alert("请输入正确的价格！")
 99 |             form[3].focus()
100 |             return
101 |         }
102 |         document.getElementById("editForm").submit()
103 |     }
104 | </script>
105 | </body>
106 | </html>
107 | 


--------------------------------------------------------------------------------
/src/main/webapp/index.jsp:
--------------------------------------------------------------------------------
  1 | <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
  2 | <%@ taglib prefix="C" uri="http://java.sun.com/jsp/jstl/core" %>
  3 | 
  4 | <%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
  5 | <!DOCTYPE html>
  6 | <html>
  7 | <head>
  8 |     <meta charset="UTF-8">
  9 |     <title>图书管理系统</title>
 10 | </head>
 11 | <link rel="stylesheet" href="${pageContext.request.contextPath}/static/css/index.css" charset="utf-8">
 12 | <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
 13 |       integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
 14 | <body>
 15 | 
 16 | <div id="lead">
 17 |     <a href="<%=request.getContextPath()%>/LogoutServlet">注销</a>
 18 | </div>
 19 | <h2 align="center">图书管理系统</h2>
 20 | <div class="container">
 21 | 
 22 |     <div class="search">
 23 |         <label>
 24 |             <input type="text" placeholder="输入你想搜索的书籍" id="search"/>
 25 |         </label>
 26 |         <button onclick="search()" class="glyphicon glyphicon-search">搜索</button>
 27 |     </div>
 28 |     <div class="bookList">
 29 |         <div class="col-md-12 column">
 30 |             <div class="panel-heading">
 31 |                 <button class="btn btn-primary" onclick="toAddBook()">添加</button>
 32 |                 <button class="btn btn-primary" onclick="refresh()">刷新</button>
 33 |             </div>
 34 | 
 35 |             <table class="table table-hover table-striped">
 36 |                 <thead>
 37 | 
 38 |                 <tr align="right">
 39 |                     <th width="50px">序号</th>
 40 |                     <th width="350px">书名</th>
 41 |                     <th width="200px">作者</th>
 42 |                     <th width="80px">价格</th>
 43 |                     <th width="120px">出版社</th>
 44 |                     <th width="150px">操作</th>
 45 |                 </tr>
 46 |                 </thead>
 47 |                 <tbody>
 48 |                 <c:forEach items="${sessionScope.bookList}" var="book" varStatus="status">
 49 |                     <tr>
 50 |                         <td>${status.count + (sessionScope.current-1)*10}</td>
 51 |                         <td>${book.name}</td>
 52 |                         <td>${book.author}</td>
 53 |                         <td>${book.price}</td>
 54 |                         <td>${book.press}</td>
 55 |                         <td>
 56 |                             <a onclick="return foo();" href="<%=request.getContextPath()%>/DeleteServlet?id=${book.id}">删除</a>
 57 |                             |
 58 |                             <a href="<%=request.getContextPath()%>/GetOneServlet?id=${book.id}">编辑</a> |
 59 |                             <a href="<%=request.getContextPath()%>/BookDetailServlet?id=${book.id}">查看详情</a>
 60 |                         </td>
 61 |                     </tr>
 62 |                 </c:forEach>
 63 |                 </tbody>
 64 |             </table>
 65 | 
 66 |         </div>
 67 |         <nav aria-label="Page navigation">
 68 |             <ul class="pagination right">
 69 |                 <li>
 70 |                     <a href="<%=request.getContextPath()%>/GetServlet?current=${sessionScope.current > 1 ? sessionScope.current-1:sessionScope.current}"
 71 |                        aria-label="Previous">
 72 |                         <span aria-hidden="true">&laquo;</span>
 73 |                     </a>
 74 |                 </li>
 75 |                 <c:forEach begin="1" end="${sessionScope.page}" var="i">
 76 |                     <c:if test="${i==sessionScope.current}">
 77 |                         <li class="active"><a href="<%=request.getContextPath()%>/GetServlet?current=${i}">${i}</a></li>
 78 |                     </c:if>
 79 |                     <c:if test="${i!=sessionScope.current}">
 80 |                         <li><a href="<%=request.getContextPath()%>/GetServlet?current=${i}">${i}</a></li>
 81 |                     </c:if>
 82 |                 </c:forEach>
 83 |                 <li>
 84 |                     <a href="<%=request.getContextPath()%>/GetServlet?current=${sessionScope.current < sessionScope.page ? sessionScope.current+1:sessionScope.current}"
 85 |                        aria-label="Next">
 86 |                         <span aria-hidden="true">&raquo;</span>
 87 |                     </a>
 88 |                 </li>
 89 |             </ul>
 90 |         </nav>
 91 |     </div>
 92 |     <div class="footer">Copyright &copy; 2021 by suhu</div>
 93 | </div>
 94 | <script type="text/javascript">
 95 |     function refresh() {
 96 |         window.location = "<%=request.getContextPath()%>/GetServlet?current=1&size=10"
 97 |     }
 98 | 
 99 |     function toAddBook() {
100 |         window.location = "<%=request.getContextPath()%>/addBook.jsp"
101 |     }
102 | 
103 |     function search() {
104 |         s = document.getElementById("search")
105 |         // console.log(s.value)
106 |         window.location = "<%=request.getContextPath()%>/GetServlet?current=1&size=10&key=" + s.value
107 |     }
108 | 
109 |     function foo() {
110 |         return confirm("确定要删除吗？");
111 |     }
112 | 
113 |     var input = document.getElementById("search")
114 |     input.addEventListener("keyup", function (event) {
115 |         event.preventDefault()
116 |         if (event.keyCode === 13 && input.value !== "") {
117 |             search()
118 |         }
119 |     })
120 | 
121 | </script>
122 | </body>
123 | </html>


--------------------------------------------------------------------------------
/sql/store.sql:
--------------------------------------------------------------------------------
 1 | /*
 2 |  Navicat MySQL Data Transfer
 3 | 
 4 |  Source Server         : localhost
 5 |  Source Server Type    : MySQL
 6 |  Source Server Version : 80021
 7 |  Source Host           : localhost:3306
 8 |  Source Schema         : store
 9 | 
10 |  Target Server Type    : MySQL
11 |  Target Server Version : 80021
12 |  File Encoding         : 65001
13 | 
14 |  Date: 18/12/2021 18:02:12
15 | */
16 | 
17 | SET NAMES utf8mb4;
18 | SET FOREIGN_KEY_CHECKS = 0;
19 | 
20 | -- ----------------------------
21 | -- Table structure for book
22 | -- ----------------------------
23 | DROP TABLE IF EXISTS `book`;
24 | CREATE TABLE `book`  (
25 |   `id` int NOT NULL AUTO_INCREMENT,
26 |   `name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
27 |   `author` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
28 |   `price` float NULL DEFAULT NULL,
29 |   `press` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
30 |   `isbn` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
31 |   `intro` text CHARACTER SET utf8 COLLATE utf8_general_ci NULL,
32 |   PRIMARY KEY (`id`) USING BTREE
33 | ) ENGINE = InnoDB AUTO_INCREMENT = 31 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
34 | 
35 | -- ----------------------------
36 | -- Records of book
37 | -- ----------------------------
38 | INSERT INTO `book` VALUES (1, 'Python编程 从入门到实践 第2版', '[美]埃里克·马瑟斯', 105.1, '人民邮电出版社', '9787115546081', '零基础学Python编程教程书籍，数据分析、网络爬虫、深度学习技能，畅销经典蟒蛇书升级版，附赠源代码、练习答案、学习视频、学习速查地图读者交流群等资源。');
39 | INSERT INTO `book` VALUES (8, 'C++ Primer Plus 第6版 中文版', '[美] 史蒂芬·普拉达', 59, '人民邮电出版社', '9787115521644', 'C++程序设计经典教程，畅销30年的C++大百科全书全新升级，经典C++入门教程十年新版再现，孟岩、高博倾力推荐，赠送价值99元的e读版电子书及在线实验环境，赠送大尺寸全书思维导图，赠199元训练营');
40 | INSERT INTO `book` VALUES (9, '利用Python进行数据分析（原书第2版）', '[美]韦斯·麦金尼', 110.5, '机械工业出版社', '9787111603702', 'Python数据分析经典畅销书全新升级，第1版中文版累计销售100000册 Python pandas创始人亲自执笔，Python语言的核心开发人员鼎立推荐 针对Python 3.6进行全面修订和更新');
41 | INSERT INTO `book` VALUES (10, 'JavaScript高级程序设计 第4版', '[美]马特·弗里斯比', 123.5, '人民邮电出版社', '9787115545381', 'web前端开发经典教程，JS“红宝书”全新升级，入门+实战，涵盖ECMAScript 2019，提供教学视频+配套编程环境，可直接在线运行随书代码');
42 | INSERT INTO `book` VALUES (11, '深入理解Java虚拟机：JVM高级特性与实践（第3版）', '周志明', 119.8, '机械工业出版社', '9787111641247', '周志明虚拟机新作，第3版新增内容近50%，5个维度全面剖析JVM，大厂面试知识点全覆盖。与 Java编程思想、Effective Java、Java核心技术 堪称：Java四大名著');
43 | INSERT INTO `book` VALUES (12, 'Head First Java（中文版）', '[美]塞若，[美]贝茨', 37.2, '中国电力出版社', '9787508344980', '10年畅销经典，累计印刷30多次，畅销近30万册，计算机图书十大好书之一。');
44 | INSERT INTO `book` VALUES (13, 'Spring Cloud Alibaba 微服务架构实战派（上下册）', '胡弦', 118, '电子工业出版社', '9787121423130', '学完Springboot该学微服务，学这本了。不仅有Spring Cloud Alibaba，还有微服务涉及的相关技术（比如Seata、Skywalking、Redis、RocketMQ等），实战性强');
45 | INSERT INTO `book` VALUES (14, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
46 | INSERT INTO `book` VALUES (15, 'C++ Primer中文版（第5版）', '[美]李普曼 等', 118.9, '电子工业出版社', '9787121155352', 'C++学习头牌 全球读者千万 全面采用新标 技术影响力图书冠军');
47 | INSERT INTO `book` VALUES (16, 'C++并发编程实战（第2版）', '[英]安东尼·威廉姆斯', 133.8, '人民邮电出版社', '9787115573551', 'C++并发编程深度指南，C++标准委员会成员编写，囊括C++并发编程多个方面，代码附有中文注释简洁易懂，附赠配套代码文件。');
48 | INSERT INTO `book` VALUES (17, 'Java核心技术 卷I 基础知识（原书第11版）', '[美],凯·S.霍斯特曼', 138.4, '机械工业出版社', '9787111636663', 'Core Java 第11版，Jolt大奖获奖作品，针对Java SE9、10、11全面更新，与Java编程思想、Effective Java、深入理解Java虚拟机 堪称：Java四大名著');
49 | INSERT INTO `book` VALUES (18, '算法(第4版)', '[美]Robert Sedgewick　Kevin Wayne', 124.3, '人民邮电出版社', '9787115293800', '【图灵程序设计丛书】算法领域的经典参考书 众多图例实现图解算法和算法导论 基于Java语言实现算法和数据结构 熟练掌握算法设计与分析');
50 | INSERT INTO `book` VALUES (19, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
51 | INSERT INTO `book` VALUES (20, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
52 | INSERT INTO `book` VALUES (22, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
53 | INSERT INTO `book` VALUES (23, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
54 | INSERT INTO `book` VALUES (24, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
55 | INSERT INTO `book` VALUES (25, 'Java编程思想（第4版）', '[美] Bruce Eckel', 100.3, '机械工业出版社', '9787111213826', 'Java学习经典,殿堂级著作！赢得了全球程序员的广泛赞誉。');
56 | INSERT INTO `book` VALUES (26, 'C++ Primer中文版（第5版）', '[美]李普曼 等', 118.9, '电子工业出版社', '9787121155352', 'C++学习头牌 全球读者千万 全面采用新标 技术影响力图书冠军');
57 | INSERT INTO `book` VALUES (27, 'C++ Primer中文版（第5版）', '[美]李普曼 等', 118.9, '电子工业出版社', '9787121155352', 'C++学习头牌 全球读者千万 全面采用新标 技术影响力图书冠军');
58 | INSERT INTO `book` VALUES (28, 'C++ Primer中文版（第5版）', '[美]李普曼 等', 118.9, '电子工业出版社', '9787121155352', 'C++学习头牌 全球读者千万 全面采用新标 技术影响力图书冠军');
59 | INSERT INTO `book` VALUES (29, 'C++ Primer中文版（第5版）', '[美]李普曼 等', 118.9, '电子工业出版社', '9787121155352', 'C++学习头牌 全球读者千万 全面采用新标 技术影响力图书冠军');
60 | 
61 | -- ----------------------------
62 | -- Table structure for user
63 | -- ----------------------------
64 | DROP TABLE IF EXISTS `user`;
65 | CREATE TABLE `user`  (
66 |   `id` int NOT NULL AUTO_INCREMENT,
67 |   `username` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
68 |   `password` varchar(16) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
69 |   `role` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
70 |   PRIMARY KEY (`id`, `username`) USING BTREE
71 | ) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
72 | 
73 | -- ----------------------------
74 | -- Records of user
75 | -- ----------------------------
76 | INSERT INTO `user` VALUES (1, 'admin', 'admin', 'admin');
77 | 
78 | SET FOREIGN_KEY_CHECKS = 1;
79 | 


--------------------------------------------------------------------------------
/src/main/java/com/hu/dao/impl/BookDaoImpl.java:
--------------------------------------------------------------------------------
  1 | package com.hu.dao.impl;
  2 | 
  3 | import com.hu.dao.BookDao;
  4 | import com.hu.entiry.Book;
  5 | import com.hu.utils.JDBCUtil;
  6 | 
  7 | import java.sql.Connection;
  8 | import java.sql.PreparedStatement;
  9 | import java.sql.ResultSet;
 10 | import java.sql.SQLException;
 11 | import java.util.ArrayList;
 12 | import java.util.List;
 13 | import java.util.Objects;
 14 | 
 15 | /**
 16 |  * @author suhu
 17 |  * @createDate 2021/11/21
 18 |  */
 19 | public class BookDaoImpl implements BookDao {
 20 | 
 21 |     @Override
 22 |     public List<Book> getBookList(int current, int size, String key) {
 23 |         List<Book> bookList = new ArrayList<>();
 24 |         Connection connection = JDBCUtil.getConnection();
 25 |         PreparedStatement ps = null;
 26 |         ResultSet rs = null;
 27 |         String sql = "select id, name, author, price, press, isbn, intro from book " +
 28 |                 "where name like ? or author like ? or press like ? " +
 29 |                 " limit ?,?";
 30 |         if (key == null) {
 31 |             key = "";
 32 |         }
 33 |         try {
 34 |             JDBCUtil.begin();
 35 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
 36 |             ps.setString(1, "%" + key + "%");
 37 |             ps.setString(2, "%" + key + "%");
 38 |             ps.setString(3, "%" + key + "%");
 39 |             ps.setInt(4, (current - 1) * size);
 40 |             ps.setInt(5, size);
 41 |             rs = ps.executeQuery();
 42 |             while (rs.next()) {
 43 |                 Book book = new Book();
 44 |                 book.setId(rs.getInt("id"));
 45 |                 book.setName(rs.getString("name"));
 46 |                 book.setAuthor(rs.getString("author"));
 47 |                 book.setPrice(rs.getDouble("price"));
 48 |                 book.setPress(rs.getString("press"));
 49 |                 book.setIntro(rs.getString("intro"));
 50 |                 book.setIsbn(rs.getString("isbn"));
 51 |                 bookList.add(book);
 52 |             }
 53 |             JDBCUtil.commit();
 54 | 
 55 |         } catch (SQLException e) {
 56 |             e.printStackTrace();
 57 |             JDBCUtil.rollback();
 58 |         } finally {
 59 |             JDBCUtil.closeAll(connection, ps, rs);
 60 |         }
 61 |         return bookList;
 62 |     }
 63 | 
 64 |     @Override
 65 |     public int getTotal(int current, int size, String key) {
 66 |         Connection connection = JDBCUtil.getConnection();
 67 |         PreparedStatement ps = null;
 68 |         ResultSet rs = null;
 69 |         String sql = "select count(1) from book " +
 70 |                 "where name like ? or author like ? or press like ?";
 71 |         if (key == null) {
 72 |             key = "";
 73 |         }
 74 |         int total = 0;
 75 |         try {
 76 |             JDBCUtil.begin();
 77 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
 78 |             ps.setString(1, "%" + key + "%");
 79 |             ps.setString(2, "%" + key + "%");
 80 |             ps.setString(3, "%" + key + "%");
 81 |             rs = ps.executeQuery();
 82 |             if (rs.next()) {
 83 |                 total = rs.getInt(1);
 84 |             }
 85 |             JDBCUtil.commit();
 86 |         } catch (SQLException e) {
 87 |             e.printStackTrace();
 88 |             JDBCUtil.rollback();
 89 |         } finally {
 90 |             JDBCUtil.closeAll(connection, ps, rs);
 91 |         }
 92 |         return total;
 93 |     }
 94 | 
 95 |     @Override
 96 |     public void updateBook(Book book) {
 97 |         Connection connection = JDBCUtil.getConnection();
 98 |         PreparedStatement ps = null;
 99 |         String sql = "update book set name=?, author=?, price=?, press=?, intro=?, isbn=? where id=?";
100 |         try {
101 |             JDBCUtil.begin();
102 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
103 |             ps.setString(1, book.getName());
104 |             ps.setString(2, book.getAuthor());
105 |             ps.setDouble(3, book.getPrice());
106 |             ps.setString(4, book.getPress());
107 |             ps.setString(5, book.getIntro());
108 |             ps.setString(6, book.getIsbn());
109 |             ps.setInt(7, book.getId());
110 |             ps.executeUpdate();
111 |             JDBCUtil.commit();
112 | 
113 |         } catch (SQLException e) {
114 |             e.printStackTrace();
115 |             JDBCUtil.rollback();
116 |         } finally {
117 |             JDBCUtil.closeAll(connection, ps, null);
118 |         }
119 |     }
120 | 
121 |     @Override
122 |     public void deleteBook(int id) {
123 |         Connection connection = JDBCUtil.getConnection();
124 |         PreparedStatement ps = null;
125 |         String sql = "delete from book where id=?";
126 |         try {
127 |             JDBCUtil.begin();
128 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
129 |             ps.setInt(1, id);
130 |             ps.executeUpdate();
131 |             JDBCUtil.commit();
132 |         } catch (SQLException e) {
133 |             e.printStackTrace();
134 |             JDBCUtil.rollback();
135 |         } finally {
136 |             JDBCUtil.closeAll(connection, ps, null);
137 |         }
138 |     }
139 | 
140 |     @Override
141 |     public void insertBook(Book book) {
142 |         Connection connection = JDBCUtil.getConnection();
143 |         PreparedStatement ps = null;
144 |         String sql = "insert into book (name, author, price, press, isbn, intro) values (?,?,?,?,?,?)";
145 |         try {
146 |             JDBCUtil.begin();
147 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
148 |             ps.setString(1, book.getName());
149 |             ps.setString(2, book.getAuthor());
150 |             ps.setDouble(3, book.getPrice());
151 |             ps.setString(4, book.getPress());
152 |             ps.setString(5, book.getIsbn());
153 |             ps.setString(6, book.getIntro());
154 |             ps.executeUpdate();
155 |             JDBCUtil.commit();
156 |         } catch (SQLException e) {
157 |             e.printStackTrace();
158 |             JDBCUtil.rollback();
159 |         } finally {
160 |             JDBCUtil.closeAll(connection, ps, null);
161 |         }
162 |     }
163 | 
164 |     @Override
165 |     public Book getBookById(int id) {
166 |         Book book = new Book();
167 |         Connection connection = JDBCUtil.getConnection();
168 |         PreparedStatement ps = null;
169 |         ResultSet rs = null;
170 |         String sql = "select * from book where id=?";
171 |         try {
172 |             JDBCUtil.begin();
173 |             ps = Objects.requireNonNull(connection).prepareStatement(sql);
174 |             ps.setInt(1, id);
175 |             rs = ps.executeQuery();
176 |             if (rs.next()) {
177 |                 book.setId(id);
178 |                 book.setName(rs.getString(2));
179 |                 book.setAuthor(rs.getString(3));
180 |                 book.setPrice(rs.getDouble(4));
181 |                 book.setPress(rs.getString(5));
182 |                 book.setIsbn(rs.getString(6));
183 |                 book.setIntro(rs.getString(7));
184 |             }
185 |             JDBCUtil.commit();
186 |         } catch (SQLException e) {
187 |             e.printStackTrace();
188 |             JDBCUtil.rollback();
189 |         } finally {
190 |             JDBCUtil.closeAll(connection, ps, rs);
191 |         }
192 |         return book;
193 |     }
194 | }
195 | 


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