[EDIT]:第二段階(部署削除機能)まで実装完了しました。

src/main/java/com/example/rhizome/aop/aspect/PermissionCheckAspect.java

@@ -1,16 +1,17 @@
 package com.example.rhizome.aop.aspect;
 
-import com.example.rhizome.app.presentation.controller.pageproperty.SessionKeyword;
+import javax.servlet.http.HttpServletRequest;
-import com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword;
+
-import com.example.rhizome.app.presentation.form.LoginUserForm;
-import com.example.rhizome.exception.InsufficientPermissionException;
 import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Before;
 import org.aspectj.lang.annotation.Pointcut;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
-import javax.servlet.http.HttpServletRequest;
+import com.example.rhizome.app.presentation.controller.pageproperty.SessionKeyword;
+import com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword;
+import com.example.rhizome.app.presentation.form.LoginUserForm;
+import com.example.rhizome.exception.InsufficientPermissionException;
 
 /**
  * 権限チェック用のAOP

src/main/java/com/example/rhizome/app/domain/service/impl/DeleteDepartmentImpl.java

@@ -9,16 +9,18 @@ import com.example.rhizome.app.infra.repository.DepartmentRepository;
 
 @Service
 @Transactional
-public class DeleteDepartmentImpl implements DeleteDepartment{
+public class DeleteDepartmentImpl implements DeleteDepartment {
 
 	DepartmentRepository departmentRepository;
 
 	@Autowired
-	public DeleteDepartmentImpl() {
+	public DeleteDepartmentImpl(DepartmentRepository departmentRepository) {
-
+		this.departmentRepository = departmentRepository;
-
-
 
 	}
 	
+	public void deleteDepartment(Integer idDepartment) {
+		departmentRepository.deleteById(idDepartment);
+	}
+
 }

src/main/java/com/example/rhizome/app/presentation/controller/DeleteDepartmentController.java

@@ -1,10 +1,76 @@
 package com.example.rhizome.app.presentation.controller;
 
+import static com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword.*;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.servlet.http.HttpSession;
+
 import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import com.example.rhizome.aop.aspect.PermissionCheck;
+import com.example.rhizome.aop.aspect.SessionCheck;
+import com.example.rhizome.app.domain.model.LoginUser;
+import com.example.rhizome.app.domain.service.DeleteDepartment;
+import com.example.rhizome.app.presentation.controller.pageproperty.PageReturnAttributeKeyword;
+import com.example.rhizome.app.presentation.controller.pageproperty.SessionKeyword;
+import com.example.rhizome.app.presentation.controller.pageproperty.TransitionTargetPageNameKeyword;
+import com.example.rhizome.app.presentation.form.LoginUserForm;
+import com.example.rhizome.app.presentation.form.MessageForm;
 
 @Controller
 public class DeleteDepartmentController {
 
+	private final static Logger LOGGER = Logger.getLogger(DeleteDepartmentController.class.getName());
 
+	private final static String SEVERE_ERROR_MESSAGE = "エラーが発生しました！";
 
+	HttpSession httpSession;
+	DeleteDepartment deleteDepartment;
+
+	public DeleteDepartmentController(DeleteDepartment deleteDepartment, HttpSession httpSession) {
+		this.httpSession = httpSession;
+		this.deleteDepartment = deleteDepartment;
+	}
+
+	@PermissionCheck
+	@SessionCheck
+	@RequestMapping(value = DELETE_DEPARTMENT, method = RequestMethod.POST)
+	public String deleteDepartment(@RequestParam("idDepartment") Integer idDepartment, Model model) {
+
+		try {
+
+			deleteExec(
+					model,
+					idDepartment,
+					LoginUserForm.convertTo((LoginUserForm) httpSession.getAttribute(SessionKeyword.LOGIN_USER)));
+
+			return "forward:" + TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_FORM_EMPTY;
+
+		} catch (Exception e) {
+			// ログイン情報の破棄
+			httpSession.invalidate();
+
+			e.printStackTrace();
+			// エラーログ出力
+			LOGGER.log(Level.SEVERE, SEVERE_ERROR_MESSAGE, e);
+			// エラー画面遷移
+			return TransitionTargetPageNameKeyword.ERROR_HTML;
+		}
+	}
+
+	private void deleteExec(Model model, Integer idDepartment, LoginUser loginUser) {
+
+		final String DELETE_COMPLETE = "削除しました。";
+
+		deleteDepartment.deleteDepartment(idDepartment);
+
+		model.addAttribute(PageReturnAttributeKeyword.MESSAGE_INFO, new MessageForm(DELETE_COMPLETE));
+
+	}
 }

src/main/java/com/example/rhizome/app/presentation/controller/SelectDepartmentController.java

@@ -80,20 +80,21 @@ public class SelectDepartmentController {
 		}
 	}
 
-//	@PermissionCheck
+	// 管理者メニューから部署検索画面へ遷移する際に使用する
-//	@SessionCheck
+	@PermissionCheck
-//	@RequestMapping(value = TransitionTargetPageNameKeyword.SELECT_DEPARTMENT,
+	@SessionCheck
-//					method = RequestMethod.POST)
+	@RequestMapping(value = TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_FORM_EMPTY,
-//	public String select(Model model) {
+					method = RequestMethod.POST)
-//
+	public String select(Model model) {
-//		// 検索条件を元に検索を実施
+
-//		model.addAttribute(PageReturnAttributeKeyword.DEPARTMENT_FORM_LIST,
+		// 検索条件を元に検索を実施
-//				DepartmentForm.convertFrom(
+		model.addAttribute(PageReturnAttributeKeyword.DEPARTMENT_FORM_LIST,
-//						searchDepartment.searchBy(
+				DepartmentForm.convertFrom(
-//								SearchConditionDepartmentForm.convertTo(
+						searchDepartment.searchBy(
-//										searchConditionDepartmentForm()))));
+								SearchConditionDepartmentForm.convertTo(
-//
+										searchConditionDepartmentForm()))));
-//		// 検索ページに遷移
+
-//		return TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_HTML;
+		// 検索ページに遷移
-//	}
+		return TransitionTargetPageNameKeyword.SELECT_DEPARTMENT_HTML;
+	}
 }

src/main/java/com/example/rhizome/app/presentation/controller/SelectEmployeeController.java

@@ -30,6 +30,7 @@ public class SelectEmployeeController {
 
     // ログ出力用インスタンス
     private final static Logger LOGGER = Logger.getLogger(SelectEmployeeController.class.getName());
+    
     // エラーメッセージ用の定数フィールド
     private final static String SEVERE_ERROR_MESSAGE = "エラーが発生しました！";
 
@@ -51,6 +52,7 @@ public class SelectEmployeeController {
 
     /**
      * 社員検索画面表示処理コントローラ
+     * 管理者メニューから社員検索画面へ遷移する際に使用する
      *
      * @param searchConditionEmployeeForm 検索画面のフォーム
      * @param model                       ビューにデータを渡すためのコンテナ

src/main/java/com/example/rhizome/app/presentation/controller/pageproperty/TransitionTargetPageNameKeyword.java

@@ -51,7 +51,7 @@ public class TransitionTargetPageNameKeyword {
     public static final String INSERT_EMPLOYEE_CONFIRM = "/insertEmployeeConfirm";
     public static final String INSERT_EMPLOYEE = "/insertEmployee";
     public static final String SELECT_EMPLOYEE_INFO = "/selectEmployeeInfo";
-    public static final String SELECT_EMPLOYEE_INFO_FORM_EMPTY = "/selectAll";
+    public static final String SELECT_EMPLOYEE_INFO_FORM_EMPTY = "/employeeSelectAll";
     public static final String SHOW_UPDATE_EMPLOYEE = "/showUpdateEmployee";
     public static final String UPDATE_EMPLOYEE_RESULT = "/updateEmployeeResult";
 
@@ -61,6 +61,7 @@ public class TransitionTargetPageNameKeyword {
     public static final String INSERT_DEPARTMENT_CONFIRM = "/insertDepartmentConfirm";
     public static final String INSERT_DEPARTMENT = "/insertDepartment";
     public static final String SELECT_DEPARTMENT = "/selectDepartment";
+    public static final String SELECT_DEPARTMENT_FORM_EMPTY = "/departmentSelectAll";
     public static final String SHOW_UPDATE_DEPARTMENT = "/showUpdateDepartment";
     public static final String UPDATE_DEPARTMENT_RESULT = "/updateDepartmentResult";
     
@@ -90,7 +91,9 @@ public class TransitionTargetPageNameKeyword {
                 SHOW_UPDATE_EMPLOYEE,
                 UPDATE_EMPLOYEE_RESULT,
                 SELECT_DEPARTMENT,
-                INSERT_DEPARTMENT_INPUT
+                INSERT_DEPARTMENT_INPUT,
+                SELECT_DEPARTMENT_FORM_EMPTY,
+                DELETE_DEPARTMENT
         );
     }
 

src/main/resources/templates/menu.html

@@ -57,13 +57,13 @@
 	function selectEmployeeSubmit() {
 		const form = document.createElement('form');
 		form.setAttribute('method', 'post');
-		form.setAttribute('action', 'selectEmployeeInfo');
+		form.setAttribute('action', 'employeeSelectAll');
 
 		// 動的送信用のHidden
 		// 動的にFormを作成する場合は何かしら送信しないと、正しく動作しない
 		const inputField = document.createElement("input");
 		inputField.setAttribute("type", "hidden");
-		inputField.setAttribute("value", "selectEmployeeInfo");
+		inputField.setAttribute("value", "employeeSelectAll");
 
 		form.appendChild(inputField);
 
@@ -77,13 +77,13 @@
 	function selectDepartmentSubmit() {
 		const form = document.createElement('form');
 		form.setAttribute('method', 'post');
-		form.setAttribute('action', 'selectDepartment');
+		form.setAttribute('action', 'departmentSelectAll');
 
 		// 動的送信用のHidden
 		// 動的にFormを作成する場合は何かしら送信しないと、正しく動作しない
 		const inputField = document.createElement("input");
 		inputField.setAttribute("type", "hidden");
-		inputField.setAttribute("value", "selectDepartment");
+		inputField.setAttribute("value", "departmentSelectAll");
 
 		form.appendChild(inputField);