第三次作业：多对一，多对多

pom.xml

@@ -66,11 +66,26 @@
             <artifactId>mybatis-spring-boot-starter</artifactId>
             <version>3.0.3</version>
         </dependency>
+        <!--<dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
+            <version>3.5.7</version>
+        </dependency>-->
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
             <version>8.0.25</version>
         </dependency>
+        <!--<dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-generator</artifactId>
+            <version>3.5.7</version>
+        </dependency>
+        <dependency>
+            <groupId>org.freemarker</groupId>
+            <artifactId>freemarker</artifactId>
+            <version>2.3.31</version>
+        </dependency>-->
     </dependencies>
 
     <build>

src/main/java/com/c202201020242/task1/task1/controller/BooksController.java

@@ -1,7 +1,9 @@
 package com.c202201020242.task1.task1.controller;
 
 import com.c202201020242.task1.task1.model.Books;
+import com.c202201020242.task1.task1.model.Reviews;
 import com.c202201020242.task1.task1.service.BooksService;
+import com.c202201020242.task1.task1.service.ReviewsService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 
@@ -12,9 +14,12 @@ import org.springframework.web.bind.annotation.RequestMapping;
 public class BooksController {
     @Autowired
     private BooksService booksService;
+    @Autowired
+    private ReviewsService reviewsService;
     @RequestMapping("/books")
     public String books(Model model){
         model.addAttribute("BookList",booksService.getAllBooks());
+
         return "book.html";
     }
     @RequestMapping("/addbooks")

src/main/java/com/c202201020242/task1/task1/controller/UsersController.java

@@ -1,7 +1,9 @@
 package com.c202201020242.task1.task1.controller;
 
+import com.c202201020242.task1.task1.dao.ReviewsMapper;
 import com.c202201020242.task1.task1.model.Users;
 import com.c202201020242.task1.task1.service.BooksService;
+import com.c202201020242.task1.task1.service.ReviewsService;
 import com.c202201020242.task1.task1.service.UsersService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
@@ -14,6 +16,8 @@ public class UsersController {
     private UsersService usersService;
     @Autowired
     private BooksService booksService;
+    @Autowired
+    private ReviewsService reviewsService;
 
     @RequestMapping("/login")
     public String login(){

src/main/java/com/c202201020242/task1/task1/dao/BooksMapper.java

@@ -1,6 +1,7 @@
 package com.c202201020242.task1.task1.dao;
 
 import com.c202201020242.task1.task1.model.Books;
+import com.c202201020242.task1.task1.model.Reviews;
 import org.apache.ibatis.annotations.Mapper;
 
 import java.util.List;
@@ -11,5 +12,9 @@ public interface BooksMapper {
     public int addBooks(Books books);
     public int deleteBooks(int id);
     public int updateBooks(Books books);
+    public List<Books> getAllBooksAndReviews();
+    //添加评论
+    public int addReview(Reviews reviews);
+    public List<Books> findBookByBookid(int bookid);
 
 }

src/main/java/com/c202201020242/task1/task1/dao/UsersMapper.java

@@ -1,12 +1,17 @@
 package com.c202201020242.task1.task1.dao;
 
+import com.c202201020242.task1.task1.model.Books;
 import com.c202201020242.task1.task1.model.Users;
 import org.apache.ibatis.annotations.Mapper;
 
+import java.util.List;
+
 @Mapper
 public interface UsersMapper {
     //注册
     public int addUsers(Users users);
     //查询用户名和密码是否正确
     public Users getUsers(String username, String password);
+
+    public List<Users> getAllUsers();
 }

src/main/java/com/c202201020242/task1/task1/model/Books.java

@@ -3,6 +3,7 @@ package com.c202201020242.task1.task1.model;
 import lombok.Data;
 
 import java.util.Date;
+import java.util.List;
 
 @Data
 public class Books {
@@ -12,4 +13,5 @@ public class Books {
     private String isbn;
     private String publisher;
     private String published_date;
+    private List<Reviews> reviewsList;
 }

src/main/java/com/c202201020242/task1/task1/model/Users.java

@@ -2,9 +2,14 @@ package com.c202201020242.task1.task1.model;
 
 import lombok.Data;
 
+import java.util.List;
+
 @Data
 public class Users {
     private String username;
     private String password;
     private int id;
+
+    private List<Reviews> reviewsList;
+    private List<Borrow_records> borrow_recordsList;
 }

src/main/java/com/c202201020242/task1/task1/service/BooksService.java

@@ -1,6 +1,7 @@
 package com.c202201020242.task1.task1.service;
 
 import com.c202201020242.task1.task1.model.Books;
+import com.c202201020242.task1.task1.model.Reviews;
 
 import java.util.List;
 
@@ -9,5 +10,7 @@ public interface BooksService {
     public int addBooks(Books books);
     public int deleteBooks(int id);
     public int updateBooks(Books books);
+    public List<Books> getAllBooksAndReviews();
+    public int addReview(Reviews reviews);
 
 }

src/main/java/com/c202201020242/task1/task1/service/Impl/BooksServiceImpl.java

@@ -2,6 +2,7 @@ package com.c202201020242.task1.task1.service.Impl;
 
 import com.c202201020242.task1.task1.dao.BooksMapper;
 import com.c202201020242.task1.task1.model.Books;
+import com.c202201020242.task1.task1.model.Reviews;
 import com.c202201020242.task1.task1.service.BooksService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -31,4 +32,15 @@ public class BooksServiceImpl implements BooksService {
     public int updateBooks(Books books) {
         return booksMapper.updateBooks(books);
     }
+
+    @Override
+    public List<Books> getAllBooksAndReviews() {
+        return booksMapper.getAllBooksAndReviews();
+    }
+
+    @Override
+    public int addReview(Reviews reviews) {
+        return booksMapper.addReview(reviews);
+    }
+
 }

src/main/java/com/c202201020242/task1/task1/service/Impl/UsersServiceImpl.java

@@ -6,6 +6,8 @@ import com.c202201020242.task1.task1.service.UsersService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Service
 public class UsersServiceImpl implements UsersService {
     @Autowired
@@ -19,4 +21,10 @@ public class UsersServiceImpl implements UsersService {
     public Users getUsers(String username, String password) {
         return usersMapper.getUsers(username, password);
     }
+
+
+    @Override
+    public List<Users> getAllUsers() {
+        return usersMapper.getAllUsers();
+    }
 }

src/main/java/com/c202201020242/task1/task1/service/UsersService.java

@@ -2,8 +2,11 @@ package com.c202201020242.task1.task1.service;
 
 import com.c202201020242.task1.task1.model.Users;
 
+import java.util.List;
+
 public interface UsersService {
     public int addUsers(Users users);
     public Users getUsers(String username, String password);
+    public List<Users> getAllUsers();
 
 }

src/main/resources/mapper/BooksMapper.xml

@@ -16,4 +16,32 @@
         SET title=#{title},author=#{author},isbn=#{isbn},publisher=#{publisher},published_date=#{published_date}
         WHERE id=#{id}
     </update>
+
+
+
+    <select id="getAllBooksAndReviews" resultMap="ReviewMap">
+        SELECT * FROM books202201020242
+    </select>
+    <resultMap id="ReviewMap" type="com.c202201020242.task1.task1.model.Books">
+        <id column="id" property="id"/>
+        <result property="title" column="title"/>
+        <result property="author" column="author"/>
+        <result property="isbn" column="isbn"/>
+        <result property="publisher" column="publisher"/>
+        <result property="published_date" column="published_date"/>
+        <collection property="reviewsList"
+                    ofType="com.c202201020242.task1.task1.model.Reviews"
+                    column="title"
+                    select="com.c202201020242.task1.task1.dao.ReviewsMapper.findReviewByTitle">
+        </collection>
+    </resultMap>
+    <insert id="addReview" parameterType="com.c202201020242.task1.task1.model.Reviews">
+        INSERT INTO reviews202201020242(bookname,reviews,username) VALUES(#{bookname},#{reviews},#{username})
+    </insert>
+
+
+    <select id="findBookByBookid" parameterType="String" resultType="com.c202201020242.task1.task1.model.Books">
+        SELECT * FROM books202201020242 WHERE id=#{bookid}
+    </select>
+
 </mapper>

src/main/resources/mapper/UsersMapper.xml

@@ -4,7 +4,31 @@
     <insert id="addUsers" parameterType="com.c202201020242.task1.task1.model.Users">
             INSERT INTO users202201020242(username,password) VALUES(#{username},#{password})
     </insert>
-    <select id="getUsers" parameterType="com.c202201020242.task1.task1.model.Users" resultType="com.c202201020242.task1.task1.model.Users">
+    <select id="getUsers" parameterType="com.c202201020242.task1.task1.model.Users" resultMap="ReviewMap">
         SELECT * FROM users202201020242 WHERE username=#{username} AND password=#{password}
     </select>
+    <resultMap id="ReviewMap" type="com.c202201020242.task1.task1.model.Users">
+        <id column="id" property="id"/>
+        <result property="username" column="username"/>
+        <result property="password" column="password"/>
+        <collection property="reviewsList"
+                    ofType="com.c202201020242.task1.task1.model.Reviews"
+                    column="username"
+                    select="com.c202201020242.task1.task1.dao.ReviewsMapper.findReviewsByUsersId">
+        </collection>
+    </resultMap>
+
+    <select id="getAllUsers" resultMap="All">
+        SELECT * FROM users202201020242
+    </select>
+    <resultMap id="All" type="com.c202201020242.task1.task1.model.Users">
+        <id column="id" property="id"/>
+        <result property="username" column="username"/>
+        <result property="password" column="password"/>
+        <collection property="borrow_recordsList"
+                    ofType="com.c202201020242.task1.task1.model.Borrow_records"
+                    column="id"
+                    select="com.c202201020242.task1.task1.dao.Borrow_recordsMapper.findBorrow_recordsByUserId">
+        </collection>
+    </resultMap>
 </mapper>

src/main/resources/templates/book.html

@@ -30,6 +30,12 @@
     </table>
     </br>
     <Button><a th:href="@{/addbooks}" style="text-decoration: none;color: darkblue;width: 400px">添加书籍</a></Button>
+
+
+    <br>
+    <br>
+    <button><a href="/reviews">第三次作业</a></button>
+
 </div>
 </body>
 </html>

src/main/resources/templates/reviews.html

@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>书籍评论</title>
+</head>
+<body>
+<h4>书籍评价</h4>
+<table border="1">
+  <tr style="color: cornflowerblue">
+    <td>id</td>
+    <td>书名</td>
+    <td>作者</td>
+    <td>出版社</td>
+    <td>评论</td>
+    <td>操作</td>
+  </tr>
+  <tr th:each="reviews:${BookAndReviewList}">
+    <td th:text="${reviews.id}"></td>
+    <td th:text="${reviews.title}"></td>
+    <td th:text="${reviews.author}"></td>
+    <td th:text="${reviews.publisher}"></td>
+    <!--判断评论是否为空-->
+    <td th:if="${reviews.reviewsList}!= null">
+      <ul>
+        <li th:each="re:${reviews.reviewsList}">
+          <span th:text="${re.username}+' : '+${re.reviews}"></span>
+        </li>
+      </ul>
+    </td>
+    <td><a th:href="@{/addreview}">添加评论</a></td>
+  </tr>
+</table>
+</br>
+</br>
+</br>
+<h4>书籍借阅</h4>
+<table border="1">
+  <tr style="color: cornflowerblue">
+    <td>id</td>
+    <td>用户名</td>
+    <td>借阅的书籍</td>
+    <td colspan="3">操作</td>
+  </tr>
+  <tr th:each="borrow:${UserList}">
+    <td th:text="${borrow.id}"></td>
+    <td th:text="${borrow.username}"></td>
+    <td th:if="${borrow.borrow_recordsList}!= null">
+      <ul>
+        <li th:each="book:${borrow.borrow_recordsList}">
+          <span th:text="'编号：'+${book.bookid}"></span><a th:href="@{/updateborrow(x=${book.bookid},y=${borrow.id})}" style="text-decoration: none;color: green">&nbsp&nbsp&nbsp修改此书籍借阅信息</a>
+          <div th:if="${book.booksList}!=null"
+               th:each="xxx:${book.booksList}">
+            <span th:text="'书名： '+${xxx.title}"></span>
+
+          </div>
+        </li>
+      </ul>
+    </td>
+    <td><a th:href="@{/borrow}">借阅书籍</a></td>
+    <td><a th:href="@{/return}">归还书籍</a></td>
+    <td></td>
+  </tr>
+</table>
+</body>
+</html>