完成Register && Gird

src/main/java/net/alawn/bill/repository/BookRepo.java

@@ -19,9 +19,9 @@ import java.util.List;
 @Repository
 public interface BookRepo extends JpaRepository<Book, Long> {
 
-    List<Book> findByUserId(long userId);
+    List<Book> findByUserIdOrderByCreateTimeDesc(long userId);
 
-    @Modifying
+    @Modifying(clearAutomatically = true)
     @Query(value = "update t_bill_books set total_amount = (select sum(amount) from t_bill_items where book_id = ?1) where id = ?1",nativeQuery = true)
     void sumAmount(long bookId);
 }