[EDIT] 収入・支出の一覧を取得する機能追加しました。

src/main/java/com/example/demo/app/domain/service/TransactionService.java

@@ -5,6 +5,8 @@ import java.util.List;
 import java.util.Map;
 
 import com.example.demo.app.domain.model.TransactionModel;
+import com.example.demo.app.presentation.form.Expense;
+import com.example.demo.app.presentation.form.Income;
 
 public interface TransactionService {
 
@@ -14,10 +16,16 @@ public interface TransactionService {
 	
 	public int findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId);
 	
-	public int findTotalexpense(LocalDate startDate, LocalDate endDate, Long userId);
+	public int findTotalExpense(LocalDate startDate, LocalDate endDate, Long userId);
 	
 	public int createTransaction(TransactionModel transactionModel);
 	
 	public int updateTransaction(TransactionModel transactionModel);
 	
+	public void deleteTransaction(Long transactionId);
+	
+	public List<Income> findTotalIncomeList(LocalDate startDate, LocalDate endDate, Long userId);
+	
+	public List<Expense> findTotalExpenseList(LocalDate startDate, LocalDate endDate, Long userId);
+	
 }

src/main/java/com/example/demo/app/domain/service/impl/TransactionServiceImpl.java

@@ -16,6 +16,8 @@ import com.example.demo.app.infra.entity.UserEntity;
 import com.example.demo.app.infra.repository.CategoryRepository;
 import com.example.demo.app.infra.repository.TransactionRepository;
 import com.example.demo.app.infra.repository.UserRepository;
+import com.example.demo.app.presentation.form.Expense;
+import com.example.demo.app.presentation.form.Income;
 
 import lombok.RequiredArgsConstructor;
 
@@ -27,19 +29,38 @@ public class TransactionServiceImpl implements TransactionService {
 	private final UserRepository userRepository;
 	private final CategoryRepository categoryRepository;
 
-	public Map<LocalDate, List<TransactionModel>> findAllByDate(LocalDate startDate, LocalDate endDate, Long userId) {
+	public Map<LocalDate, List<TransactionModel>> findAllByDate(
+			LocalDate startDate,
+			LocalDate endDate,
+			Long userId) {
+
+		System.out.println("========== findAllByDate ==========");
+		System.out.println("startDate = " + startDate);
+		System.out.println("endDate   = " + endDate);
+		System.out.println("userId    = " + userId);
 
 		List<TransactionEntity> transactionEntityList = transactionRepository.findAllByDateAndUserId(startDate, endDate,
 				userId);
 
-		List<TransactionModel> transactionModelList = TransactionModel
+		System.out.println("Entity count = " + transactionEntityList.size());
-				.convertFrom(transactionEntityList);
+
+		transactionEntityList.forEach(t -> {
+			System.out.println(
+					"date = " + t.getTransactionDate()
+							+ ", amount = " + t.getAmount());
+		});
+
+		List<TransactionModel> transactionModelList = TransactionModel.convertFrom(transactionEntityList);
+
+		System.out.println("Model count = " + transactionModelList.size());
 
 		Map<LocalDate, List<TransactionModel>> transactionModelMap = transactionModelList.stream()
-				.collect(Collectors.groupingBy(TransactionModel::getTransactionDate));
+				.collect(Collectors.groupingBy(
+						TransactionModel::getTransactionDate));
+
+		System.out.println("Map = " + transactionModelMap);
 
 		return transactionModelMap;
-
 	}
 
 	public int findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId) {
@@ -48,9 +69,21 @@ public class TransactionServiceImpl implements TransactionService {
 
 	}
 
-	public int findTotalexpense(LocalDate startDate, LocalDate endDate, Long userId) {
+	public int findTotalExpense(LocalDate startDate, LocalDate endDate, Long userId) {
 
-		return transactionRepository.findTotalIncome(startDate, endDate, userId);
+		return transactionRepository.findTotalExpense(startDate, endDate, userId);
+
+	}
+
+	public List<Income> findTotalIncomeList(LocalDate startDate, LocalDate endDate, Long userId) {
+
+		return transactionRepository.findTotalIncomeList(startDate, endDate, userId);
+
+	}
+
+	public List<Expense> findTotalExpenseList(LocalDate startDate, LocalDate endDate, Long userId) {
+
+		return transactionRepository.findTotalExpenseList(startDate, endDate, userId);
 
 	}
 
@@ -115,4 +148,9 @@ public class TransactionServiceImpl implements TransactionService {
 		}
 
 	}
+
+	public void deleteTransaction(Long transactionId) {
+		transactionRepository.deleteById(transactionId);
+	}
+
 }

src/main/java/com/example/demo/app/infra/repository/TransactionRepository.java

@@ -7,21 +7,31 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 
 import com.example.demo.app.infra.entity.TransactionEntity;
+import com.example.demo.app.presentation.form.Expense;
+import com.example.demo.app.presentation.form.Income;
 
 public interface TransactionRepository extends JpaRepository<TransactionEntity, Long> {
 
-	@Query("select t from TransactionEntity t where t.userEntity.userId = :userId and t.transactionDate = :transactionDate")
+	@Query("select t from TransactionEntity t where t.userEntity.userId = :userId and t.transactionDate = :todayDate")
 	public List<TransactionEntity> findByUserIdAndDate(LocalDate todayDate, Long userId);
 
 	@Query("select t from TransactionEntity t where (t.transactionDate between :startDate and :endDate) and (t.userEntity.userId = :userId) order by t.transactionDate asc")
 	public List<TransactionEntity> findAllByDateAndUserId(LocalDate startDate, LocalDate endDate, Long userId);
 
-	@Query("select sum(t.amount) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 0")
+	@Query("select coalesce(sum(t.amount), 0) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 0")
 	public Integer findTotalExpense(LocalDate startDate, LocalDate endDate, Long userId);
 
-	@Query("select sum(t.amount) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 1")
+	@Query("select coalesce(sum(t.amount), 0) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 1")
 	public Integer findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId);
 	
-	@Query("select sum(t.amount) from TransactionEntity t where t.userEntity.userId = :userId and t.categoryEntity.categoryId = :categoryId and t.transactionDate between :startDate and :endDate")
+	@Query("select coalesce(sum(t.amount), 0) from TransactionEntity t where t.userEntity.userId = :userId and t.categoryEntity.categoryId = :categoryId and t.transactionDate between :startDate and :endDate")
 	public Integer findCategoryExpense(LocalDate startDate, LocalDate endDate, Long userId, Long categoryId);
+
+	@Query("select new com.example.demo.app.presentation.form.Expense(t.transactionDate, coalesce(sum(t.amount), 0)) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 0 group by t.transactionDate order by t.transactionDate asc")
+	public List<Expense> findTotalExpenseList(LocalDate startDate, LocalDate endDate, Long userId);
+
+	@Query("select new com.example.demo.app.presentation.form.Income(t.transactionDate, coalesce(sum(t.amount), 0)) from TransactionEntity t inner join CategoryEntity c on t.categoryEntity.categoryId = c.categoryId where (t.userEntity.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 1 group by t.transactionDate order by t.transactionDate asc")
+	public List<Income> findTotalIncomeList(LocalDate startDate, LocalDate endDate, Long userId);
+	
+	
 }