Merge branch 's-tajihi' of https://gitea.it-college.co.jp/2026_09_5H_Spring_KIZAKI/ShareBooks_new into h-seya

src/main/java/com/example/demo/controller/BookController.java

@@ -6,8 +6,11 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
 
 import com.example.demo.entity.Book;
+import com.example.demo.form.BookSearchForm;
 import com.example.demo.service.BookServiceImpl;
 
 @Controller
@@ -15,6 +18,7 @@ public class BookController {
 	@Autowired
 	private BookServiceImpl bookService;
 
+	/* 一覧表示 */
 	@GetMapping("/book")
 	public String book(Model model) {
 
@@ -22,7 +26,35 @@ public class BookController {
 
 		// DBから取得したデータをHTMLで扱えるようにする
 		model.addAttribute("book", bookService.findAll());
+
+		model.addAttribute("bookSearchForm", new BookSearchForm());
+
 		return "book";
 	}
 
+	/* 検索処理 */
+	@GetMapping("/searchBooks")
+	public String searchBooks(@ModelAttribute BookSearchForm bookSearchForm,
+			Model model) {
+		
+		model.addAttribute("book", bookService.findBooks(bookSearchForm.getKeyword()));
+
+		model.addAttribute("bookSearchForm", bookSearchForm);
+
+		return "book";
+
+	}
+
+	/* クリア処理 */
+	@PostMapping("/clearBookList")
+	public String clearBookList(Model model) {
+		
+		model.addAttribute("book", bookService.findAll());
+
+		model.addAttribute("bookSearchForm", new BookSearchForm());
+
+		// 一覧表示画面に戻る
+		return "/book";
+	}
+
 }

src/main/java/com/example/demo/form/BookSearchForm.java

@@ -0,0 +1,10 @@
+package com.example.demo.form;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class BookSearchForm {
+	private String keyword;
+}

src/main/java/com/example/demo/repository/BookRepository.java

@@ -1,10 +1,20 @@
 package com.example.demo.repository;
 
 
+import java.util.List;
+
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import com.example.demo.entity.Book;
 
 public interface BookRepository extends JpaRepository<Book, Integer>{
-
+	@Query("""
+			SELECT b FROM Book b
+			WHERE b.title LIKE %:keyword%
+				OR b.publisher LIKE %:keyword%
+				OR b.author LIKE %:keyword%
+			""")
+	List<Book> searchBooks(@Param("keyword")String keyword);
 }

src/main/java/com/example/demo/service/BookServiceImpl.java

@@ -1,6 +1,5 @@
 package com.example.demo.service;
 
-
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -15,21 +14,12 @@ public class BookServiceImpl{
 	@Autowired
 	private BookRepository bookRepository;
 
-//	@Override
-//	public String booklist(com.example.demo.entity.Book book) {
-//		Book booklist = new Book();
-//		booklist.setBookId(book.getBookId());
-//		
-//		return null;
-//	}
-	
-	
-
 	public List<Book> findAll() {
 		return bookRepository.findAll();
 	}
 	
-	
+	public List<Book> findBooks(String keyword){ 
-	
+		return bookRepository.searchBooks(keyword);
+	}
 
 }

src/main/resources/templates/book.html

@@ -12,6 +12,27 @@
 		<h1>社内図書一覧</h1>
 		<div class="float-end">
 		</div>
+
+		<form class="input-group" th:action="@{/searchBooks}" th:object="${bookSearchForm}" method="get">
+
+			<input type="text" th:field="*{keyword}" class="form-control" placeholder="キーワードを入力">
+
+			<button class="btn btn-outline-success" type="submit">
+				検索
+			</button>
+
+		</form>
+		
+		<form method="post" th:action="@{/clearBookList}">
+			<button class="button button-secondary" type="submit">
+				クリア
+			</button>
+		</form>
+		
+		<p>※「タイトル」「出版社」「著者名」で検索</p>
+
+
+
 		<form method="get" action="bookLend">
 
 			<table class="table table-striped">
@@ -68,7 +89,7 @@
 									貸出
 								</button>
 							</form>
-							<form method="get" action="/updateconfirm">
+							<form method="post" action="/updateconfirm">
 								<input type="hidden" name="bookManageId" th:value="*{book.bookManageId}">
 								<button type="submit">更新</button>
 							</form>
@@ -77,8 +98,12 @@
 								<button type="submit">削除</button>
 							</form>
 						</td>
+					</tr>
 					
-
+					<tr th:if="${#lists.isEmpty(book)}">
+						<td colspan="15">
+							該当する図書がありません
+						</td>
 					</tr>
 				</tbody>
 			</table>