diff --git a/book-rent/src/main/java/com/example/demo/controller/AdminLoanController.java b/book-rent/src/main/java/com/example/demo/controller/AdminLoanController.java
index 45482ec..2746bcc 100644
--- a/book-rent/src/main/java/com/example/demo/controller/AdminLoanController.java
+++ b/book-rent/src/main/java/com/example/demo/controller/AdminLoanController.java
@@ -1,5 +1,21 @@
 package com.example.demo.controller;
 
+import java.util.logging.Logger;
+
+import jakarta.servlet.http.HttpSession;
+
+import org.springframework.stereotype.Controller;
+
+@Controller
 public class AdminLoanController {
+	
+	// ログ出力用インスタンス
+		private final static Logger LOGGER = Logger.getLogger(AdminLoanController.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！";
+		
+		HttpSession httpSession;
+		
 
 }