[EDIT] userIdによる検索機能に日付も入力するように変更しました。

src/main/java/com/example/demo/app/domain/model/TransactionModel.java

@@ -1,6 +1,9 @@
 package com.example.demo.app.domain.model;
 
 import java.time.LocalDate;
+import java.util.List;
+
+import com.example.demo.app.infra.entity.TransactionEntity;
 
 import lombok.AllArgsConstructor;
 import lombok.Getter;
@@ -19,4 +22,17 @@ public class TransactionModel {
 	
 	private LocalDate transactionDate;
 	
+	public static TransactionModel convertFrom(TransactionEntity transactionEntity) {
+		return new TransactionModel(
+				transactionEntity.getTransactionId(),
+				transactionEntity.getUserEntity().getUserId(),
+				transactionEntity.getCategoryEntity().getCategoryId(),
+				transactionEntity.getAmount(),
+				transactionEntity.getTransactionDate());
+	}
+
+	public static List<TransactionModel> convertFrom(List<TransactionEntity> transactionEntityList) {
+		return transactionEntityList.stream().map(TransactionModel::convertFrom).toList();
+	}
+	
 }

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

@@ -1,5 +1,19 @@
 package com.example.demo.app.domain.service;
 
+import java.time.LocalDate;
+import java.util.List;
+import java.util.Map;
+
+import com.example.demo.app.domain.model.TransactionModel;
+
 public interface TransactionService {
 
+	public Map<LocalDate, List<TransactionModel>> findAllByDate(LocalDate startDate, LocalDate endDate, Long userId);
+	
+	public List<TransactionModel> findByUserIdAndDate(LocalDate todayDate, Long userId);
+	
+	public int findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId);
+	
+	public int findTotalexpense(LocalDate startDate, LocalDate endDate, Long userId);
+	
 }

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

@@ -1,10 +1,55 @@
 package com.example.demo.app.domain.service.impl;
 
+import java.time.LocalDate;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
 import org.springframework.stereotype.Service;
 
+import com.example.demo.app.domain.model.TransactionModel;
 import com.example.demo.app.domain.service.TransactionService;
+import com.example.demo.app.infra.entity.TransactionEntity;
+import com.example.demo.app.infra.repository.TransactionRepository;
+
+import lombok.RequiredArgsConstructor;
 
 @Service
+@RequiredArgsConstructor
 public class TransactionServiceImpl implements TransactionService {
 
+	private final TransactionRepository transactionRepository;
+
+	public Map<LocalDate, List<TransactionModel>> findAllByDate(LocalDate startDate, LocalDate endDate, Long userId) {
+
+		List<TransactionEntity> transactionEntityList = transactionRepository.findAllByDateAndUserId(startDate, endDate,
+				userId);
+
+		List<TransactionModel> transactionModelList = TransactionModel
+				.convertFrom(transactionEntityList);
+
+		Map<LocalDate, List<TransactionModel>> transactionModelMap = transactionModelList.stream()
+				.collect(Collectors.groupingBy(TransactionModel::getTransactionDate));
+
+		return transactionModelMap;
+
+	}
+	
+	public int findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId) {
+		
+		return transactionRepository.findTotalIncome(startDate, endDate, userId);
+		
+	}
+	public int findTotalexpense(LocalDate startDate, LocalDate endDate, Long userId) {
+		
+		return transactionRepository.findTotalIncome(startDate, endDate, userId);
+		
+	}
+
+	public List<TransactionModel> findByUserIdAndDate(LocalDate todayDate, Long userId) {
+
+		return TransactionModel.convertFrom(transactionRepository.findByUserIdAndDate(todayDate, userId));
+
+	}
+
 }

src/main/java/com/example/demo/app/infra/entity/UserEntity.java

@@ -29,7 +29,7 @@ public class UserEntity {
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
 	@Column(name = "user_id")
-	private Integer userId;
+	private Long userId;
 
 	@Column(name = "user_name", nullable = false)
 	private String userName;

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

@@ -1,9 +1,25 @@
 package com.example.demo.app.infra.repository;
 
+import java.time.LocalDate;
+import java.util.List;
+
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 
 import com.example.demo.app.infra.entity.TransactionEntity;
 
 public interface TransactionRepository extends JpaRepository<TransactionEntity, Long> {
 
+	@Query("select t from TransactionEntity t where t.userEntity.userId = :userId and t.transactionDate = :transactionDate")
+	public List<TransactionEntity> findByUserIdAndDate(LocalDate todayDate, Long userId);
+
+	@Query("select t from TransactionEntity t where (t.transactionDate between :startDate and :endDate) and (t.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.categoryId = c.categoryId where (t.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.categoryId = c.categoryId where (t.userId = :userId and t.transactionDate between :startDate and :endDate) and c.transactionType = 1")
+	public Integer findTotalIncome(LocalDate startDate, LocalDate endDate, Long userId);
+
 }

src/main/java/com/example/demo/app/presentation/controller/TransactionController.java

@@ -1,8 +1,22 @@
 package com.example.demo.app.presentation.controller;
 
-import org.springframework.stereotype.Controller;
+import java.time.LocalDate;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
 
+import jakarta.servlet.http.HttpSession;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import com.example.demo.app.domain.service.CategoryService;
 import com.example.demo.app.domain.service.TransactionService;
+import com.example.demo.app.presentation.form.CategoryForm;
+import com.example.demo.app.presentation.form.TransactionForm;
 
 import lombok.RequiredArgsConstructor;
 
@@ -11,7 +25,59 @@ import lombok.RequiredArgsConstructor;
 public class TransactionController {
 
 	private final TransactionService transactionService;
+	private final CategoryService categoryService;
+
+	// 一覧画面
+
+	@GetMapping("/transaction/list")
+	public String transactionList(@RequestParam LocalDate startDate, @RequestParam LocalDate endDate, Model model,
+			HttpSession session) {
+
+		LoginUser loginUser = (LoginUser) session.getAttribute("loginUser");
+
+		Map<LocalDate, List<TransactionForm>> transactionFormMap = new HashMap<>();
 		
 		
+		transactionService.findAll(startDate, endDate, loginUser.getUserId).forEach((date, list) -> {
+			List<TransactionForm> transactionFormList = list.stream().map(transaction -> {
+				TransactionForm transactionForm = TransactionForm.convertFrom(
+						transaction,
+						CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId())).getCategoryName(),
+						transactionService.findTotalexpense(startDate, endDate, loginUser.getUserId),
+						transactionService.findTotalIncome(startDate, endDate, loginUser.getUserId),
+						CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId())).getTransactionType()
+						);
+				return transactionForm;
+			}).collect(Collectors.toList());
+			transactionFormMap.put(date, transactionFormList);
+		});
+
+		model.addAttribute("transactionFormMap", transactionFormMap);
+
+		return "transactionList";
+	}
+
+	// 詳細画面
+	@GetMapping()
+	public String findOne(@RequestParam LocalDate todayDate, Model model, HttpSession session) {
+
+		LoginUser loginUser = (LoginUser) session.getAttribute("loginUser");
+		
+		List<TransactionForm> transactionFormList = transactionService.findByUserIdAndDate(todayDate, ((LoginUser)session.getAttribute("loginUser")).getUserId).stream().map(transaction -> {
+			TransactionForm transactionForm = TransactionForm.convertFrom(
+					transaction,
+					CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId())).getCategoryName(),
+					transactionService.findTotalexpense(todayDate, todayDate, loginUser.getUserId),
+					transactionService.findTotalIncome(todayDate, todayDate, loginUser.getUserId),
+					CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId())).getTransactionType()
+					);
+			return transactionForm;
+		}).collect(Collectors.toList());
+		
+		
+		model.addAttribute("transactionFormList", transactionFormList);
+
+		return "";
+	}
 
 }

src/main/java/com/example/demo/app/presentation/form/TransactionForm.java

@@ -24,17 +24,38 @@ public class TransactionForm {
 
 	private LocalDate transactionDate;
 	
-	public static TransactionForm convertFrom(TransactionModel transactionModel) {
+	private String categoryName;
+	
+	private Integer income;
+	
+	private Integer expense;
+	
+	private Integer transactionType;
+	
+	public static TransactionForm convertFrom(TransactionModel transactionModel, String categoryName, int income, int expense, int transactionType) {
 		return new TransactionForm(
 				transactionModel.getTransactionId(),
 				transactionModel.getUserId(),
 				transactionModel.getCategoryId(),
 				transactionModel.getAmount(),
-				transactionModel.getTransactionDate());
+				transactionModel.getTransactionDate(),
+				categoryName,
+				income,
+				expense,
+				transactionType);
 	}
 
-	public static List<TransactionForm> convertFrom(List<TransactionModel> transactionModelList) {
+	public static List<TransactionForm> convertFrom(List<TransactionModel> transactionModelList, String categoryName, int income, int expense, int transactionType ) {
-		return transactionModelList.stream().map(TransactionForm::convertFrom).toList();
+		return transactionModelList.stream().map(transactionModel -> TransactionForm.convertFrom(transactionModel, categoryName, income, expense, transactionType)).toList();
+	}
+
+	public static TransactionModel convertTo(TransactionForm transactionForm) {
+		return new TransactionModel(
+				transactionForm.getTransactionId(),
+				transactionForm.getUserId(),
+				transactionForm.getCategoryId(),
+				transactionForm.getAmount(),
+				transactionForm.getTransactionDate());
 	}
 	
 }