[EDIT] menu画面のためのメソッドを作成しました。

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

@@ -1,6 +1,7 @@
 package com.example.demo.app.presentation.controller;
 
 import java.time.LocalDate;
+import java.time.YearMonth;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -19,6 +20,8 @@ import com.example.demo.app.domain.model.LoginModel;
 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.Expense;
+import com.example.demo.app.presentation.form.Income;
 import com.example.demo.app.presentation.form.TransactionForm;
 
 import lombok.RequiredArgsConstructor;
@@ -29,8 +32,8 @@ public class TransactionController {
 
 	private final TransactionService transactionService;
 	private final CategoryService categoryService;
-	// 一覧画面
 
+	// 一覧画面
 	@GetMapping("/transaction/list")
 	public String transactionList(@RequestParam(required = false) LocalDate startDates,
 			@RequestParam(required = false) LocalDate endDates, Model model,
@@ -47,19 +50,24 @@ public class TransactionController {
 
 		transactionService.findAllByDate(startDate, endDate, loginUser.getUserId()).forEach((date, list) -> {
 			List<TransactionForm> transactionFormList = list.stream().map(transaction -> {
+				System.out.println(transaction.getTransactionDate());
 				TransactionForm transactionForm = TransactionForm.convertFrom(
 						transaction,
 						CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId()))
 								.getCategoryName(),
-						transactionService.findTotalexpense(startDate, endDate, loginUser.getUserId()),
+						transactionService.findTotalExpense(startDate, endDate, loginUser.getUserId()),
 						transactionService.findTotalIncome(startDate, endDate, loginUser.getUserId()),
 						CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId()))
 								.getTransactionType());
+				System.out.println("startDate = " + startDate);
+				System.out.println("endDate = " + endDate);
 				return transactionForm;
 			}).collect(Collectors.toList());
 			transactionFormMap.put(date, transactionFormList);
 		});
 		
+		
+		
 		model.addAttribute("transactionFormMap", transactionFormMap);
 
 		return "transaction_list";
@@ -81,32 +89,40 @@ public class TransactionController {
 							transaction,
 							CategoryForm.convertFrom(categoryService.findOne(transaction.getCategoryId()))
 									.getCategoryName(),
-							transactionService.findTotalexpense(todayDate, todayDate, loginUser.getUserId()),
+							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("today", todayDate);
 		model.addAttribute("transactionFormList", transactionFormList);
 
-		return "";
+		return "transaction_detail";
 	}
 
 	@GetMapping("/transaction/create")
-	public String createOneGet(@ModelAttribute TransactionForm transactionForm) {
+	public String createOneGet(@ModelAttribute TransactionForm transactionForm, @RequestParam LocalDate today, Model model) {
 
-		return "";
+		List<CategoryForm> categoryFormList = CategoryForm.convertFrom(categoryService.findAll());
+		
+		model.addAttribute("categoryFormList", categoryFormList);
+		model.addAttribute("today", today);
+		
+		return "transaction_create";
 	}
 
 	@PostMapping("/transaction/create")
-	public String createOnePost(@ModelAttribute TransactionForm transactionForm, Model model) {
+	public String createOnePost(@ModelAttribute TransactionForm transactionForm, @RequestParam LocalDate today, Model model, HttpSession session) {
-
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+		transactionForm.setUserId(loginUser.getUserId());
+		transactionForm.setTransactionDate(today);
 		if (transactionService.createTransaction(TransactionForm.convertTo(transactionForm)) != 0) {
 			return "error";
 		}
 
-		return "";
+		return "redirect:/transaction/detail?todayDates=" + today;
 
 	}
 
@@ -127,4 +143,62 @@ public class TransactionController {
 
 	}
 
+	@PostMapping("/transaction/delete")
+	public String deleteOne(@RequestParam Long transactionId, @RequestParam LocalDate today) {
+		
+		transactionService.deleteTransaction(transactionId);
+		return "redirect:/transaction/detail?todayDates=" + today;
+	}
+	
+	@GetMapping("/menu")
+    public String menu(HttpSession session, Model model, @RequestParam(required = false, defaultValue = "0") String years, @RequestParam(required = false, defaultValue = "0") String months) {
+    	
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+
+		LocalDate today = LocalDate.now();
+		
+		int year = (years.equals("0")) ? today.getYear() : Integer.parseInt(years);
+		int month = (months.equals("0")) ? today.getMonthValue() : Integer.parseInt(months);
+
+		System.out.println("year : " + year + "month : " + month);
+		
+        YearMonth yearMonth = YearMonth.of(year, month);
+        
+        int lastDay = yearMonth.lengthOfMonth();
+
+        int firstDayOfWeek =
+                yearMonth.atDay(1).getDayOfWeek().getValue() % 7;
+
+        model.addAttribute("year", year);
+        model.addAttribute("month", month);
+        model.addAttribute("day", today.getDayOfMonth());
+
+        model.addAttribute("lastDay", lastDay);
+        model.addAttribute("firstDayOfWeek", firstDayOfWeek);
+
+        LocalDate startDate = LocalDate.now().withDayOfMonth(1);
+
+		LocalDate endDate = LocalDate.now().withDayOfMonth(LocalDate.now().lengthOfMonth());
+        
+        
+		List<Income> incomeList = transactionService.findTotalIncomeList(startDate, endDate, loginUser.getUserId());
+		List<Expense> expenseList = transactionService.findTotalExpenseList(startDate, endDate, loginUser.getUserId());
+		
+		model.addAttribute("incomeList", incomeList);
+		
+		model.addAttribute("expenseList", expenseList);
+		
+		
+		int totalIncome = transactionService.findTotalIncome(startDate, endDate, loginUser.getUserId());
+		
+		int totalExpense= transactionService.findTotalExpense(startDate, endDate, loginUser.getUserId());
+		
+		model.addAttribute("totalIncome", totalIncome);
+		model.addAttribute("totalExpense", totalExpense);
+		
+		
+    	return "menu";
+    }
+	
+	
 }