[edit] HTML表示内容（セッション判別）を追加しました

src/main/java/com/example/demo/entity/AccountEntity.java

@@ -5,6 +5,8 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
 import jakarta.persistence.Table;
 
 import lombok.Getter;
@@ -28,8 +30,9 @@ public class AccountEntity {
 	@Column(name="login_info_id")
 	private Integer loginInfoId;
 	
-	@Column(name="employee_id")
-	private Integer employeeId;
+	@ManyToOne
+	@JoinColumn(name = "employee_id")
+	private Employee employee;
 	
 	@Column(name="password_hash")
 	private String passwordHash;

src/main/java/com/example/demo/repository/AccountRepository.java

@@ -6,6 +6,6 @@ import com.example.demo.entity.AccountEntity;
 
 public interface AccountRepository extends JpaRepository<AccountEntity,Integer>{
 	
-	AccountEntity findByEmployeeId (Integer employeeId);
+	AccountEntity findByEmployee_EmployeeId (Integer employeeId);
 
 }

src/main/java/com/example/demo/service/LoginService.java

@@ -16,7 +16,7 @@ public class LoginService {
 	
 	public AccountEntity login(LoginForm form) {
 		AccountEntity accountEntity = 
-				accountRepository.findByEmployeeId(form.getEmployeeId());
+				accountRepository.findByEmployee_EmployeeId(form.getEmployeeId());
 		
 		if(accountEntity == null) {
 			return null;

src/main/resources/templates/book.html

@@ -8,6 +8,28 @@
 </head>
 
 <body>
+	
+	<div class="header-bar">
+
+			<div class="header-left">
+				ShareBooks
+			</div>
+
+			<div class="header-right">
+
+				<span class="user">
+					<span th:text="${session.loginEmployee.employee.employeeName}"></span>
+					(<span th:text="${session.loginEmployee.adminFlag == 1 ? '管理者' : '一般'}"></span>)
+				</span>
+
+				<a class="button-link" th:href="@{/logout}">
+					ログアウト
+				</a>
+
+			</div>
+
+		</div>
+		
 	<div class="container">
 		<h1>社内図書一覧</h1>
 
@@ -34,9 +56,6 @@
 		<p>※「タイトル」「出版社」「著者名」で検索</p>
 
 
-
-		<form method="get" action="bookLend">
-
 			<table class="table table-striped">
 				<thead>
 					<tr>
@@ -54,7 +73,7 @@
 						<th>更新日時</th>
 						<th>寄贈者</th>
 						<th>貸出状態</th>
-						<th>操作</th>
+						<th th:if="${session.loginEmployee.adminFlag == 1}">操作</th>
 					</tr>
 				</thead>
 
@@ -83,7 +102,8 @@
 						<td
 							th:text="*{book.bookLends != null ? (book.bookLends.bookStatus == 0 ? '貸出可': '貸出不可') : '貸出可'}">
 						</td>
-						<td>
+						
+						<td th:if="${session.loginEmployee.adminFlag == 1}">
 							<form method="post" action="/bookLend">
 								<input type="hidden" name="bookManageId" th:value="*{book.bookManageId}">
 								<button type="submit"
@@ -93,11 +113,15 @@
 							</form>
 							<form method="post" action="/updateconfirm">
 								<input type="hidden" name="bookManageId" th:value="*{book.bookManageId}">
-								<button type="submit">更新</button>
+								<button type="submit">
+									更新
+								</button>
 							</form>
 							<form method="get" action="/delete">
 								<input type="hidden" name="bookManageId" th:value="*{book.bookManageId}">
-								<button type="submit">削除</button>
+								<button type="submit">
+									削除
+								</button>
 							</form>
 						</td>
 					</tr>
@@ -107,11 +131,10 @@
 							該当する図書がありません
 						</td>
 					</tr>
+					
 				</tbody>
 			</table>
 
-
-
 	</div>
 </body>