[EDIT]目標のヘッダーとフッターを表示するように変更。

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

@@ -24,6 +24,8 @@ public class GoalModel {
 
 	private Integer goalComplete;
 	
+	private Integer achievementRate; // 達成率
+
 	public static GoalModel convertFrom(GoalEntity goalEntity) {
 		return new GoalModel(
 				goalEntity.getGoalId(),
@@ -31,7 +33,8 @@ public class GoalModel {
 				goalEntity.getGoalSubtitle(),
 				goalEntity.getTargetAmount(),
 				goalEntity.getDeadline(),
-				goalEntity.getGoalComplete());
+				goalEntity.getGoalComplete(),
+				null);
 	}
 
 	public static GoalEntity convertTo(GoalModel goalModel) {
@@ -52,7 +55,8 @@ public class GoalModel {
 				goalForm.getGoalSubtitle(),
 				goalForm.getTargetAmount(),
 				goalForm.getDeadline(),
-				goalForm.getGoalComplete());
+				goalForm.getGoalComplete()
+				,null);
 	}
 
 }

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

@@ -29,7 +29,34 @@ public class GoalServiceImpl implements GoalService {
 
 		UserEntity userEntity = userRepository.findById(userId).orElseThrow();
 		GoalEntity goalEntity = userEntity.getGoalEntity();
-		return GoalModel.convertFrom(goalEntity);
+
+		// 収支の合計を計算(収入はプラス、支出はマイナス)
+		int transactionTotal = userEntity.getTransactionEntityList().stream()
+				.mapToInt(t -> {
+					int sign = t.getCategoryEntity().getTransactionType() == 1 ? 1 : -1;
+					return sign * t.getAmount();
+				})
+				.sum();
+
+		// 現在の資産 = 貯蓄金 + 収支合計
+		int currentAmount = userEntity.getSaving() + transactionTotal;
+
+		// 達成率(%) = 現在の資産 ÷ 目標金額 × 100
+		int achievementRate = 
+				(goalEntity.getTargetAmount() == null)
+				? 0	: 
+				(int) ((currentAmount * 100.0) / goalEntity.getTargetAmount());
+
+		GoalModel goalModel = GoalModel.convertFrom(goalEntity);
+
+		return new GoalModel(
+				goalModel.getGoalId(),
+				goalModel.getGoalTitle(),
+				goalModel.getGoalSubtitle(),
+				goalModel.getTargetAmount(),
+				goalModel.getDeadline(),
+				goalModel.getGoalComplete(),
+				achievementRate);   
 	}
 	
 	@Override

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

@@ -29,8 +29,6 @@ public class GoalController {
 		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
 		
 		Long userId = loginUser.getUserId();
-		//テスト用
-//		Long userId = 1L;
 				
 		GoalModel goalModel = goalService.getGoalByUserId(userId);
 		GoalForm goalForm = GoalForm.convertFrom(goalModel);
@@ -45,9 +43,6 @@ public class GoalController {
 		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
 		Long userId = loginUser.getUserId();
 
-		//テスト用
-//		Long userId = 1L;		
-
 		GoalModel goalModel = goalService.getGoalByUserId(userId);
 		GoalForm goalForm = GoalForm.convertFrom(goalModel);
 
@@ -61,9 +56,6 @@ public class GoalController {
 		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
 
 		Long userId = loginUser.getUserId();
-		//テスト用
-//		Long userId = 1L;
-				
 		
 		// 本人の目標かどうかを確認してから更新する
 		GoalModel currentGoal = goalService.getGoalByUserId(userId);

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

@@ -25,6 +25,8 @@ public class GoalForm {
 
 	private Integer goalComplete;
 	
+	private Integer achievementRate; // 達成率
+
 	public static GoalForm convertFrom(GoalModel goalModel) {
 		return new GoalForm(
 				goalModel.getGoalId(),
@@ -32,7 +34,8 @@ public class GoalForm {
 				goalModel.getGoalSubtitle(),
 				goalModel.getTargetAmount(),
 				goalModel.getDeadline(),
-				goalModel.getGoalComplete());
+				goalModel.getGoalComplete(),
+				goalModel.getAchievementRate());
 	}
 
 //	public static List<GoalForm> convertFrom(List<GoalModel> goalModelList) {

src/main/resources/templates/goal_edit.html

@@ -3,8 +3,12 @@
 <head>
 	<meta charset="UTF-8">
 	<title>目標編集</title>
+	
+	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body>
+	<div th:replace="~{header :: header}"></div>
 
 	<h1>目標編集</h1>
 
@@ -13,26 +17,29 @@
 
 		<div>
 			<label>目標名</label>
-			<input type="text" th:field="*{goalTitle}">
+			<input type="text" th:field="*{goalTitle}" required>
 		</div>
 
 		<div>
 			<label>目標説明</label>
-			<textarea th:field="*{goalSubtitle}"></textarea>
+			<textarea th:field="*{goalSubtitle}" required></textarea>
 		</div>
 
 		<div>
 			<label>目標金額</label>
-			<input type="number" th:field="*{targetAmount}">
+			<input type="number" th:field="*{targetAmount}" required min="1">
 		</div>
 
 		<div>
 			<label>目標達成期限</label>
-			<input type="date" th:field="*{deadline}">
+			<input type="date" th:field="*{deadline}" th:min="${#temporals.format(#temporals.createNow(), 'yyyy-MM-dd')}" required>
 		</div>
 		<button type="submit">更新する</button>
 
 	</form>
 
+	<div th:replace="~{footer :: footer}"></div>
+
+	
 </body>
 </html>

src/main/resources/templates/goal_view.html

@@ -3,8 +3,13 @@
 <head>
 	<meta charset="UTF-8">
 	<title>目標詳細</title>
+	
+	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body>
+	<div th:replace="~{header :: header}"></div>
+	
 
 	<h1>目標詳細</h1>
 
@@ -27,9 +32,18 @@
 			<th>目標達成期限</th>
 			<td th:text="${goalForm.deadline}"></td>
 		</tr>
+		
+		<tr>
+			<th>達成率</th>
+			<td th:text="${goalForm.achievementRate} + '%'"></td>
+		</tr>
+		
+		
 	</table>
 
 	<a th:href="@{/goal/edit}">編集する</a>
 	
+	<div th:replace="~{footer :: footer}"></div>
+	
 </body>
 </html>