[EDIT]プロフィールの編集

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

@@ -4,4 +4,5 @@ import com.example.demo.app.domain.model.ProfileModel;
 
 public interface ProfileService {
 	ProfileModel findOne(Long userId);
+	void withdraw(Long userId);
 }

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

@@ -31,4 +31,16 @@ public class ProfileServiceImpl implements ProfileService{
                 userEntity.getAnnualIncome(),
                 userEntity.getMonthlyBudget());
 	}
+	
+	@Override
+	public void withdraw(Long userId) {
+	UserEntity userEntity =userRepository.findById(userId).orElse(null);
+	
+	if (userEntity == null) {
+		return;
+	}
+	
+	userEntity.setDeleteFlag(1);
+	userRepository.save(userEntity);
+	}
 }

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

@@ -5,6 +5,7 @@ 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.PostMapping;
 
 import com.example.demo.app.domain.model.LoginModel;
 import com.example.demo.app.domain.model.ProfileModel;
@@ -29,4 +30,28 @@ public class ProfileController {
 		model.addAttribute("profileForm", profileForm);
 		return "profile";
 	}
+	
+	@GetMapping("/profile/edit")
+	public String showEditProfile() {
+	    return "profile_edit";
+	}
+	
+	@PostMapping("/withdraw")
+	public String withdraw(HttpSession session) {
+
+	    LoginModel loginUser =
+	            (LoginModel) session.getAttribute("loginUser");
+
+	    profileService.withdraw(loginUser.getUserId());
+
+	    session.invalidate();
+
+	    return "redirect:/login";
+	}
+	
+	@PostMapping("/logout")
+	public String logout(HttpSession session) {
+	    session.invalidate();
+	    return "redirect:/login";
+	}
 }

src/main/resources/templates/profile.html

@@ -51,12 +51,13 @@
 			</form>
 		</div>
 		
-			<form th:action="@{/login}" method="post">
+			<form th:action="@{/logout}" method="post">
 				<button type="submit">ログアウト</button>
 			</form>
 			
-			<form th:action="@{/aaa}" method="post">
-				<button type="submit">脱退</button>
+			<form th:action="@{/withdraw}" method="post"
+			      onsubmit="return confirm('本当に脱退しますか？');">
+			    <button type="submit">脱退</button>
 			</form>
 		</main>
 </body>