SelectBookController・Book＿CollectionRepository途中まで

team1/src/main/java/com/example/demo/controller/SelectBookController.java

@@ -45,7 +45,7 @@ public class SelectBookController {
     
 //     ① 書籍一覧の初期表示
 
-    @RequestMapping(value ="/selectBook", method = RequestMethod.GET)
+    @RequestMapping(value ="/selectBook", method = RequestMethod.POST)
     public String select(Model model) {
     	try {
     		//貸出可能な書籍を全権取得する

team1/src/main/java/com/example/demo/repository/Book_CollectionRepository.java

@@ -1,11 +1,35 @@
 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 org.springframework.stereotype.Repository;
 
 import com.example.demo.entity.Book_collectionEntity;
 
 @Repository
 public interface Book_CollectionRepository extends JpaRepository<Book_collectionEntity, Integer> {
+//	List<Book_collectionEntity, Integer>{
+		//①貸出フラグを指定して蔵書を取得する
+		//初期表示は" 0 : 貸出可"を表示
+		List<Book_collectionEntity> findByFlgLending(Character flgLending);
 		
+		//②書籍名・出版社・特記事項で部分一致検索をする
+		//@Queryのカッコ内の"SERECT ～"で
+		@Query("""
+		SELECT b FROM Book_collectionEntity b WHERE b.flgLending = '0'
+		AND (:nmBook = '' OR b.nmBook LIKE CONCAT('%', :nmBook,'%'))
+		AND (:pubLisher = '' OR b.pubLisher LIKE CONCAT('%', :pubLisher,'%'))
+		AND (:noteText = '' OR b.noteText LIKE CONCAT('%', :noteText,'%'))
+		ORDER BY b.idBook
+		""")
+		
+		List<Book_collectionEntity> searchBooks(
+		@Param("nmBook") String nmBook,
+		@Param("pubLisher") String pubLisher,
+		@Param(" noteText") String  noteText
+				);	
+	}
 }