新增书籍表、列表/搜索、管理员/馆员维护入口

src/main/java/com/mzh/library/dao/BookDao.java

@@ -0,0 +1,24 @@
+package com.mzh.library.dao;
+
+import com.mzh.library.entity.Book;
+import com.mzh.library.entity.BookCategory;
+import com.mzh.library.entity.BookSearchCriteria;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface BookDao {
+    List<BookCategory> findAllCategories();
+
+    List<Book> search(BookSearchCriteria criteria);
+
+    Optional<Book> findById(long id);
+
+    Optional<Book> findByIdentifier(String identifier);
+
+    long create(Book book);
+
+    boolean update(Book book);
+
+    boolean delete(long id);
+}