Add pagination support and enhance book and publisher management features

src/main/java/com/grtsinry43/bookmanagement/common/PageResponse.java

@@ -0,0 +1,21 @@
+package com.grtsinry43.bookmanagement.common;
+
+import lombok.Data;
+
+@Data
+public class PageResponse<T> {
+    private Integer pageNum;
+    private Integer pageSize;
+    private Long total;
+    private T data;
+
+    public PageResponse(Integer pageNum, Integer pageSize, Long total, T data) {
+        this.pageNum = pageNum;
+        this.pageSize = pageSize;
+        this.total = total;
+        this.data = data;
+    }
+
+    public PageResponse() {
+    }
+}

src/main/java/com/grtsinry43/bookmanagement/config/WebConfig.java

@@ -0,0 +1,24 @@
+package com.grtsinry43.bookmanagement.config;
+
+import com.grtsinry43.bookmanagement.aop.AuthInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * @author grtsinry43
+ * @date 2024/9/8 14:48
+ * @description 少年负壮气，奋烈自有时！
+ */
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Autowired
+    private AuthInterceptor authInterceptor;
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(authInterceptor).addPathPatterns("/**");
+    }
+}

src/main/java/com/grtsinry43/bookmanagement/controller/BookController.java

@@ -5,8 +5,11 @@ import com.grtsinry43.bookmanagement.common.ApiResponse;
 import com.grtsinry43.bookmanagement.common.BusinessException;
 import com.grtsinry43.bookmanagement.common.ErrorCode;
 import com.grtsinry43.bookmanagement.common.UserRole;
+import com.grtsinry43.bookmanagement.dto.BookDTO;
 import com.grtsinry43.bookmanagement.entity.Book;
 import com.grtsinry43.bookmanagement.service.BookService;
+import com.grtsinry43.bookmanagement.vo.BookVO;
+import com.grtsinry43.bookmanagement.common.PageResponse;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
@@ -28,14 +31,15 @@ public class BookController {
     private BookService bookService;
 
     @GetMapping("/all")
-    public ApiResponse<List<Book>> getAllBooks() {
+    public ApiResponse<PageResponse<List<BookVO>>> getAllBooks(@RequestParam(defaultValue = "1") int pageNum,
-        List<Book> books = bookService.getAllBooks();
+                                                               @RequestParam(defaultValue = "10") int pageSize) {
-        return ApiResponse.success(books);
+        PageResponse<List<BookVO>> page = bookService.getAllBooks(pageNum, pageSize);
+        return ApiResponse.success(page);
     }
 
     @GetMapping("/{id}")
-    public ApiResponse<Book> getBookById(@PathVariable Integer id) {
+    public ApiResponse<BookVO> getBookById(@PathVariable Integer id) {
-        Book book = bookService.getBookById(id);
+        BookVO book = bookService.getBookById(id);
         if (book != null) {
             return ApiResponse.success(book);
         } else {
@@ -45,48 +49,51 @@ public class BookController {
 
     @GetMapping("/search/title")
     @AuthCheck(requiredRole = UserRole.USER)
-    public ApiResponse<List<Book>> searchBooksByTitle(@RequestParam String title) {
+    public ApiResponse<PageResponse<List<BookVO>>> searchBooksByTitle(@RequestParam String title,
-        List<Book> books = bookService.getBooksByTitle(title);
+                                                                      @RequestParam(defaultValue = "1") int pageNum,
-        return ApiResponse.success(books);
+                                                                      @RequestParam(defaultValue = "10") int pageSize) {
+        PageResponse<List<BookVO>> page = bookService.getBooksByTitle(title, pageNum, pageSize);
+        return ApiResponse.success(page);
     }
 
     @GetMapping("/search/author")
     @AuthCheck(requiredRole = UserRole.USER)
-    public ApiResponse<List<Book>> searchBooksByAuthor(@RequestParam String authorName) {
+    public ApiResponse<PageResponse<List<BookVO>>> searchBooksByAuthor(@RequestParam String authorName,
-        List<Book> books = bookService.getBooksByAuthor(authorName);
+                                                                       @RequestParam(defaultValue = "1") int pageNum,
-        return ApiResponse.success(books);
+                                                                       @RequestParam(defaultValue = "10") int pageSize) {
+        PageResponse<List<BookVO>> page = bookService.getBooksByAuthor(authorName, pageNum, pageSize);
+        return ApiResponse.success(page);
     }
 
     @GetMapping("/search/publisher")
     @AuthCheck(requiredRole = UserRole.USER)
-    public ApiResponse<List<Book>> searchBooksByPublisher(@RequestParam String publisherName) {
+    public ApiResponse<PageResponse<List<BookVO>>> searchBooksByPublisher(@RequestParam String publisherName,
-        List<Book> books = bookService.getBooksByPublisher(publisherName);
+                                                                          @RequestParam(defaultValue = "1") int pageNum,
-        return ApiResponse.success(books);
+                                                                          @RequestParam(defaultValue = "10") int pageSize) {
+        PageResponse<List<BookVO>> page = bookService.getBooksByPublisher(publisherName, pageNum, pageSize);
+        return ApiResponse.success(page);
     }
 
     @PostMapping("/admin/add")
     @AuthCheck(requiredRole = UserRole.ADMIN)
-    public ApiResponse<Book> addBook(@RequestBody Book book) {
+    public ApiResponse<BookVO> addBook(@RequestBody BookDTO book) {
-        bookService.addBook(book);
+        BookVO res = bookService.addBook(book);
-        return ApiResponse.success(book);
+        return ApiResponse.success(res);
 
     }
 
     @PutMapping("/admin/update")
     @AuthCheck(requiredRole = UserRole.ADMIN)
-    public ApiResponse<Book> updateBook(@RequestBody Book book) {
+    public ApiResponse<BookVO> updateBook(@RequestBody BookDTO book) {
-
+        BookVO res = bookService.updateBook(book);
-        bookService.updateBook(book);
+        return ApiResponse.success(res);
-        return ApiResponse.success(book);
 
     }
 
     @DeleteMapping("/admin/delete/{id}")
     @AuthCheck(requiredRole = UserRole.ADMIN)
     public ApiResponse<Void> deleteBook(@PathVariable Integer id) {
-
         bookService.deleteBook(id);
         return ApiResponse.success(null);
-
     }
 }

src/main/java/com/grtsinry43/bookmanagement/controller/PublisherController.java

@@ -1,7 +1,12 @@
 package com.grtsinry43.bookmanagement.controller;
 
-import org.springframework.web.bind.annotation.RequestMapping;
+import com.grtsinry43.bookmanagement.dto.PublisherDTO;
-import org.springframework.web.bind.annotation.RestController;
+import com.grtsinry43.bookmanagement.entity.Publisher;
+import com.grtsinry43.bookmanagement.service.PublisherService;
+import com.grtsinry43.bookmanagement.common.ApiResponse;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import java.util.List;
 
 /**
  * <p>
@@ -14,5 +19,37 @@ import org.springframework.web.bind.annotation.RestController;
 @RestController
 @RequestMapping("/publisher")
 public class PublisherController {
+    @Autowired
+    private PublisherService publisherService;
 
+    @GetMapping("/{id}")
+    public ApiResponse<Publisher> getById(@PathVariable Integer id) {
+        return ApiResponse.success(publisherService.getById(id));
+    }
+
+    @GetMapping("/all")
+    public ApiResponse<List<Publisher>> getAll() {
+        return ApiResponse.success(publisherService.getAll());
+    }
+
+    @PostMapping("/add")
+    public ApiResponse<Publisher> add(@RequestBody PublisherDTO dto) {
+        return ApiResponse.success(publisherService.add(dto));
+    }
+
+    @PutMapping("/update/{id}")
+    public ApiResponse<Publisher> update(@PathVariable Integer id, @RequestBody PublisherDTO dto) {
+        return ApiResponse.success(publisherService.update(id, dto));
+    }
+
+    @DeleteMapping("/delete/{id}")
+    public ApiResponse<Void> delete(@PathVariable Integer id) {
+        publisherService.delete(id);
+        return ApiResponse.success(null);
+    }
+
+    @GetMapping("/search")
+    public ApiResponse<List<Publisher>> searchByName(@RequestParam String name) {
+        return ApiResponse.success(publisherService.findByNameLike(name));
+    }
 }

src/main/java/com/grtsinry43/bookmanagement/dto/BookDTO.java

@@ -0,0 +1,42 @@
+package com.grtsinry43.bookmanagement.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Positive;
+import jakarta.validation.constraints.Size;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.util.List;
+
+@Data
+public class BookDTO {
+    @NotBlank(message = "图书标题不能为空")
+    @Size(max = 200, message = "图书标题长度不能超过200个字符")
+    private String title;
+
+    @NotBlank(message = "ISBN不能为空")
+    @Size(max = 20, message = "ISBN长度不能超过20个字符")
+    private String isbn;
+
+    @NotNull(message = "价格不能为空")
+    @Positive(message = "价格必须大于0")
+    private BigDecimal price;
+
+    @NotNull(message = "库存不能为空")
+    @Positive(message = "库存必须大于0")
+    private Integer stock;
+
+    @NotNull(message = "出版日期不能为空")
+    private LocalDate publishDate;
+
+    @NotNull(message = "出版社ID不能为空")
+    private Integer publisherId;
+
+    private String description;
+
+    private String coverImage;
+    
+    private List<String> authors; // 作者列表
+} 

src/main/java/com/grtsinry43/bookmanagement/dto/PublisherDTO.java

@@ -0,0 +1,15 @@
+package com.grtsinry43.bookmanagement.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+import lombok.Data;
+
+@Data
+public class PublisherDTO {
+    @NotBlank(message = "出版社名称不能为空")
+    @Size(max = 100, message = "出版社名称长度不能超过100个字符")
+    private String name;
+
+    @Size(max = 200, message = "地址长度不能超过200个字符")
+    private String address;
+} 

src/main/java/com/grtsinry43/bookmanagement/entity/Book.java

@@ -42,4 +42,10 @@ public class Book implements Serializable {
     private LocalDate publishDate;
 
     private Integer publisherId;
+
+    private String description;
+
+    private String coverImage;
+
+    private String author;
 }

src/main/java/com/grtsinry43/bookmanagement/mapper/BookAuthorMapper.java

@@ -3,6 +3,7 @@ package com.grtsinry43.bookmanagement.mapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.grtsinry43.bookmanagement.entity.BookAuthor;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
 
 /**
  * <p>
@@ -14,5 +15,6 @@ import org.apache.ibatis.annotations.Mapper;
  */
 @Mapper
 public interface BookAuthorMapper extends BaseMapper<BookAuthor> {
-
+    int insertBookAuthor(BookAuthor bookAuthor);
+    int deleteByBookId(@Param("bookId") Integer bookId);
 }

src/main/java/com/grtsinry43/bookmanagement/mapper/PublisherMapper.java

@@ -3,6 +3,8 @@ package com.grtsinry43.bookmanagement.mapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.grtsinry43.bookmanagement.entity.Publisher;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import java.util.List;
 
 /**
  * <p>
@@ -15,4 +17,11 @@ import org.apache.ibatis.annotations.Mapper;
 @Mapper
 public interface PublisherMapper extends BaseMapper<Publisher> {
 
+    Publisher findById(@Param("publisherId") Integer publisherId);
+    List<Publisher> findAll();
+    int insert(Publisher publisher);
+    int update(Publisher publisher);
+    int delete(@Param("publisherId") Integer publisherId);
+    List<Publisher> findByNameLike(@Param("name") String name);
+
 }

src/main/java/com/grtsinry43/bookmanagement/service/BookService.java

@@ -1,6 +1,10 @@
 package com.grtsinry43.bookmanagement.service;
 
+import com.grtsinry43.bookmanagement.dto.BookDTO;
 import com.grtsinry43.bookmanagement.entity.Book;
+import com.grtsinry43.bookmanagement.vo.BookVO;
+import com.grtsinry43.bookmanagement.common.PageResponse;
+
 import java.util.List;
 
 /**
@@ -12,19 +16,17 @@ import java.util.List;
  * @since 2025-05-19
  */
 public interface BookService {
-    Book getBookById(Integer bookId);
+    BookVO getBookById(Integer bookId);
 
-    List<Book> getAllBooks();
+    PageResponse<List<BookVO>> getBooksByTitle(String title, int pageNum, int pageSize);
+    PageResponse<List<BookVO>> getBooksByAuthor(String authorName, int pageNum, int pageSize);
+    PageResponse<List<BookVO>> getBooksByPublisher(String publisherName, int pageNum, int pageSize);
 
-    List<Book> getBooksByTitle(String title);
+    PageResponse<List<BookVO>> getAllBooks(int pageNum, int pageSize);
 
-    List<Book> getBooksByAuthor(String authorName);
+    BookVO addBook(BookDTO book);
 
-    List<Book> getBooksByPublisher(String publisherName);
+    BookVO updateBook(BookDTO book);
-
-    void addBook(Book book);
-
-    void updateBook(Book book);
 
     void deleteBook(Integer bookId);
 }

src/main/java/com/grtsinry43/bookmanagement/service/PublisherService.java

@@ -2,6 +2,9 @@ package com.grtsinry43.bookmanagement.service;
 
 import com.grtsinry43.bookmanagement.entity.Publisher;
 import com.baomidou.mybatisplus.extension.service.IService;
+import com.grtsinry43.bookmanagement.dto.PublisherDTO;
+import com.grtsinry43.bookmanagement.common.PageResponse;
+import java.util.List;
 
 /**
  * <p>
@@ -12,5 +15,11 @@ import com.baomidou.mybatisplus.extension.service.IService;
  * @since 2025-05-19
  */
 public interface PublisherService extends IService<Publisher> {
-
+    Publisher getById(Integer publisherId);
+    List<Publisher> getAll();
+    PageResponse<List<Publisher>> getAll(int pageNum, int pageSize);
+    Publisher add(PublisherDTO publisherDTO);
+    Publisher update(Integer publisherId, PublisherDTO publisherDTO);
+    void delete(Integer publisherId);
+    List<Publisher> findByNameLike(String name);
 }

src/main/java/com/grtsinry43/bookmanagement/service/impl/BookServiceImpl.java

@@ -1,17 +1,29 @@
 package com.grtsinry43.bookmanagement.service.impl;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.grtsinry43.bookmanagement.common.BusinessException;
+import com.grtsinry43.bookmanagement.common.ErrorCode;
+import com.grtsinry43.bookmanagement.dto.BookDTO;
 import com.grtsinry43.bookmanagement.entity.Book;
+import com.grtsinry43.bookmanagement.entity.Author;
+import com.grtsinry43.bookmanagement.entity.BookAuthor;
 import com.grtsinry43.bookmanagement.mapper.BookMapper;
+import com.grtsinry43.bookmanagement.mapper.AuthorMapper;
+import com.grtsinry43.bookmanagement.mapper.BookAuthorMapper;
 import com.grtsinry43.bookmanagement.service.BookService;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.grtsinry43.bookmanagement.vo.BookVO;
+import com.grtsinry43.bookmanagement.common.PageResponse;
+import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * <p>
- *  服务实现类
+ * 服务实现类
  * </p>
  *
  * @author grtsinry43
@@ -22,44 +34,136 @@ public class BookServiceImpl extends ServiceImpl<BookMapper, Book> implements Bo
 
     @Autowired
     private BookMapper bookMapper;
+    @Autowired
+    private BookAuthorServiceImpl bookAuthorService;
+    @Autowired
+    private PublisherServiceImpl publisherService;
+    @Autowired
+    private AuthorMapper authorMapper;
+    @Autowired
+    private BookAuthorMapper bookAuthorMapper;
 
     @Override
-    public Book getBookById(Integer bookId) {
+    public BookVO getBookById(Integer bookId) {
-        return bookMapper.findById(bookId);
+        Book book = bookMapper.findById(bookId);
+        if (book == null) return null;
+        return buildBookVO(book);
     }
 
     @Override
-    public List<Book> getAllBooks() {
+    public PageResponse<List<BookVO>> getBooksByTitle(String title, int pageNum, int pageSize) {
-        return bookMapper.findAll();
+        List<Book> books = bookMapper.findByTitle(title);
+        return buildPageResponse(books, pageNum, pageSize);
     }
 
     @Override
-    public List<Book> getBooksByTitle(String title) {
+    public PageResponse<List<BookVO>> getBooksByAuthor(String authorName, int pageNum, int pageSize) {
-        return bookMapper.findByTitle(title);
+        List<Book> books = bookMapper.findByAuthor(authorName);
+        return buildPageResponse(books, pageNum, pageSize);
     }
 
     @Override
-    public List<Book> getBooksByAuthor(String authorName) {
+    public PageResponse<List<BookVO>> getBooksByPublisher(String publisherName, int pageNum, int pageSize) {
-        return bookMapper.findByAuthor(authorName);
+        List<Book> books = bookMapper.findByPublisher(publisherName);
+        return buildPageResponse(books, pageNum, pageSize);
     }
 
     @Override
-    public List<Book> getBooksByPublisher(String publisherName) {
+    public PageResponse<List<BookVO>> getAllBooks(int pageNum, int pageSize) {
-        return bookMapper.findByPublisher(publisherName);
+        List<Book> books = bookMapper.findAll();
+        return buildPageResponse(books, pageNum, pageSize);
+    }
+
+    /**
+     * 查找或新建作者并返回 authorId
+     */
+    private Integer getOrCreateAuthorId(String authorName) {
+        QueryWrapper<Author> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("name", authorName);
+        Author author = authorMapper.selectOne(queryWrapper);
+        if (author == null) {
+            author = new Author();
+            author.setName(authorName);
+            authorMapper.insert(author);
+        }
+        return author.getAuthorId();
+    }
+
+    /**
+     * 重置书籍 - 作者关系（先删后建）
+     */
+    private void resetBookAuthors(Integer bookId, List<String> authorList) {
+        bookAuthorMapper.deleteByBookId(bookId);
+        if (authorList != null) {
+            for (String authorName : authorList) {
+                Integer authorId = getOrCreateAuthorId(authorName);
+                BookAuthor bookAuthor = new BookAuthor();
+                bookAuthor.setBookId(bookId);
+                bookAuthor.setAuthorId(authorId);
+                bookAuthorMapper.insertBookAuthor(bookAuthor);
+            }
+        }
+    }
+
+    private BookVO buildBookVO(Book book) {
+        BookVO vo = new BookVO();
+        BeanUtils.copyProperties(book, vo);
+        // 查询出版社名
+        if (book.getPublisherId() != null) {
+            var publisher = publisherService.getById(book.getPublisherId());
+            if (publisher != null) {
+                vo.setPublisherName(publisher.getName());
+            }
+        }
+        // 查询作者列表
+        List<String> authorNames = List.of(book.getAuthor().split(","));
+        vo.setAuthor(authorNames);
+        return vo;
+    }
+
+    private PageResponse<List<BookVO>> buildPageResponse(List<Book> books, int pageNum, int pageSize) {
+        int total = books.size();
+        int fromIndex = Math.max(0, (pageNum - 1) * pageSize);
+        int toIndex = Math.min(fromIndex + pageSize, total);
+        List<BookVO> pageList = books.stream().skip(fromIndex).limit(pageSize).map(this::buildBookVO).collect(Collectors.toList());
+        return new PageResponse<>(pageNum, pageSize, (long) total, pageList);
     }
 
     @Override
-    public void addBook(Book book) {
+    public BookVO addBook(BookDTO book) {
-        bookMapper.insert(book);
+        Book book1 = new Book();
+        Integer publisherId = book.getPublisherId();
+        if (publisherService.getById(publisherId) == null) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR);
+        } else {
+            book1.setPublisherId(publisherId);
+        }
+        BeanUtils.copyProperties(book, book1);
+        bookMapper.insert(book1);
+        resetBookAuthors(book1.getBookId(), book.getAuthors());
+        return buildBookVO(book1);
     }
 
     @Override
-    public void updateBook(Book book) {
+    public BookVO updateBook(BookDTO book) {
-        bookMapper.update(book);
+        Book bookEntity = new Book();
+        Integer publisherId = book.getPublisherId();
+        if (publisherService.getById(publisherId) == null) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR);
+        } else {
+            bookEntity.setPublisherId(publisherId);
+        }
+        BeanUtils.copyProperties(book, bookEntity);
+        bookMapper.update(bookEntity);
+        resetBookAuthors(bookEntity.getBookId(), book.getAuthors());
+        // 查询最新的 book
+        Book updated = bookMapper.findById(bookEntity.getBookId());
+        return buildBookVO(updated);
     }
 
     @Override
     public void deleteBook(Integer bookId) {
+        bookAuthorMapper.deleteByBookId(bookId);
         bookMapper.delete(bookId);
     }
 }

src/main/java/com/grtsinry43/bookmanagement/service/impl/PublisherServiceImpl.java

@@ -5,6 +5,11 @@ import com.grtsinry43.bookmanagement.mapper.PublisherMapper;
 import com.grtsinry43.bookmanagement.service.PublisherService;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.stereotype.Service;
+import org.springframework.beans.factory.annotation.Autowired;
+import java.util.List;
+import com.grtsinry43.bookmanagement.dto.PublisherDTO;
+import org.springframework.beans.BeanUtils;
+import com.grtsinry43.bookmanagement.common.PageResponse;
 
 /**
  * <p>
@@ -17,4 +22,54 @@ import org.springframework.stereotype.Service;
 @Service
 public class PublisherServiceImpl extends ServiceImpl<PublisherMapper, Publisher> implements PublisherService {
 
+    @Autowired
+    private PublisherMapper publisherMapper;
+
+    @Override
+    public Publisher getById(Integer publisherId) {
+        return publisherMapper.findById(publisherId);
+    }
+
+    @Override
+    public List<Publisher> getAll() {
+        return publisherMapper.findAll();
+    }
+
+    @Override
+    public PageResponse<List<Publisher>> getAll(int pageNum, int pageSize) {
+        List<Publisher> all = publisherMapper.findAll();
+        int total = all.size();
+        int fromIndex = Math.max(0, (pageNum - 1) * pageSize);
+        int toIndex = Math.min(fromIndex + pageSize, total);
+        List<Publisher> pageList = all.subList(fromIndex, toIndex);
+        return new PageResponse<>(pageNum, pageSize, (long) total, pageList);
+    }
+
+    @Override
+    public Publisher add(PublisherDTO publisherDTO) {
+        Publisher publisher = new Publisher();
+        BeanUtils.copyProperties(publisherDTO, publisher);
+        publisherMapper.insert(publisher);
+        return publisher;
+    }
+
+    @Override
+    public Publisher update(Integer publisherId, PublisherDTO publisherDTO) {
+        Publisher publisher = publisherMapper.findById(publisherId);
+        if (publisher == null) return null;
+        BeanUtils.copyProperties(publisherDTO, publisher);
+        publisher.setPublisherId(publisherId);
+        publisherMapper.update(publisher);
+        return publisherMapper.findById(publisherId);
+    }
+
+    @Override
+    public void delete(Integer publisherId) {
+        publisherMapper.delete(publisherId);
+    }
+
+    @Override
+    public List<Publisher> findByNameLike(String name) {
+        return publisherMapper.findByNameLike(name);
+    }
 }

src/main/java/com/grtsinry43/bookmanagement/vo/BookVO.java

@@ -0,0 +1,35 @@
+package com.grtsinry43.bookmanagement.vo;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.util.List;
+
+/**
+ * @author grtsinry43
+ * @since 2025-05-19
+ */
+@Data
+public class BookVO implements Serializable {
+    private Integer bookId;
+
+    private String title;
+
+    private String isbn;
+
+    private BigDecimal price;
+
+    private Integer stock;
+
+    private LocalDate publishDate;
+
+    private String publisherName;
+
+    private String description;
+
+    private String coverImage;
+
+    private List<String> author;
+}

src/main/resources/mapper/BookAuthorMapper.xml

@@ -2,4 +2,13 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.grtsinry43.bookmanagement.mapper.BookAuthorMapper">
 
+    <insert id="insertBookAuthor" parameterType="com.grtsinry43.bookmanagement.entity.BookAuthor">
+        INSERT INTO book_author (book_id, author_id)
+        VALUES (#{bookId}, #{authorId})
+    </insert>
+
+    <delete id="deleteByBookId" parameterType="int">
+        DELETE FROM book_author WHERE book_id = #{bookId}
+    </delete>
+
 </mapper>

src/main/resources/mapper/PublisherMapper.xml

@@ -2,4 +2,32 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.grtsinry43.bookmanagement.mapper.PublisherMapper">
 
+    <select id="findById" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
+        SELECT * FROM publisher WHERE publisher_id = #{publisherId}
+    </select>
+
+    <select id="findAll" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
+        SELECT * FROM publisher
+    </select>
+
+    <select id="findByNameLike" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
+        SELECT * FROM publisher WHERE name LIKE CONCAT('%', #{name}, '%')
+    </select>
+
+    <insert id="insert" parameterType="com.grtsinry43.bookmanagement.entity.Publisher" useGeneratedKeys="true" keyProperty="publisherId">
+        INSERT INTO publisher (name, address)
+        VALUES (#{name}, #{address})
+    </insert>
+
+    <update id="update" parameterType="com.grtsinry43.bookmanagement.entity.Publisher">
+        UPDATE publisher
+        SET name = #{name},
+            address = #{address}
+        WHERE publisher_id = #{publisherId}
+    </update>
+
+    <delete id="delete">
+        DELETE FROM publisher WHERE publisher_id = #{publisherId}
+    </delete>
+
 </mapper>

src/main/resources/sql/init.sql

@@ -1,3 +1,5 @@
+-- 适用于 PostgreSQL 数据库
+
 -- 创建数据库（如需）
 -- CREATE DATABASE book_management;
 
@@ -25,9 +27,12 @@ CREATE TABLE book
 (
     book_id      SERIAL PRIMARY KEY,
     title        VARCHAR(200)   NOT NULL,
-    isbn         VARCHAR(20)    NOT NULL UNIQUE,
+    isbn         VARCHAR(20)    NOT NULL,
     price        NUMERIC(10, 2) NOT NULL CHECK (price >= 0),
     stock        INT            NOT NULL CHECK (stock >= 0),
+    description  TEXT,
+    cover_image  VARCHAR(200),
+    author       VARCHAR(100)   NOT NULL,
     publish_date DATE,
     publisher_id INT            NOT NULL REFERENCES publisher (publisher_id)
 );
@@ -37,7 +42,8 @@ CREATE TABLE book_author
 (
     book_author_id SERIAL PRIMARY KEY,
     book_id        INT NOT NULL REFERENCES book (book_id) ON DELETE CASCADE,
-    author_id      INT NOT NULL REFERENCES author (author_id) ON DELETE CASCADE
+    author_id      INT NOT NULL REFERENCES author (author_id) ON DELETE CASCADE,
+    UNIQUE (book_id, author_id)
 );
 
 -- 读者表