diff --git a/src/main/java/com/example/cosmos_serversb/models/Users.java b/src/main/java/com/example/cosmos_serversb/models/Users.java
index a640ab3..b73d929 100644
--- a/src/main/java/com/example/cosmos_serversb/models/Users.java
+++ b/src/main/java/com/example/cosmos_serversb/models/Users.java
@@ -50,11 +50,10 @@
     }
 
     public static User createUser(String name, String pw, String iconImage) {
-        String uId = "1234";
+        String uId = getInstance().createUId();
         String uri = baseURI + AppName +"/users/" +uId;
 
-        Session session = sessionFactory.openSession();
-        session.beginTransaction();
+        Session session = SessionManager.getInstance().getSession();
         createToken(uId);
         User testUser = new User(name, uId, uri, iconImage);//名前、uId、ユーザーuri、パスワード、アイコンイメージを保存
         session.save(testUser);
@@ -64,15 +63,11 @@
           for ( User user : (List<User>) userResult ) {
            System.out.println( "UserId (" + user.getuId() + ") : " + user.getUri() + ": " + user.getName());
        }*/
-        session.getTransaction().commit();
-        session.close();
-
         return testUser;
     }
 
     public static User setUser(String uId, String name, String pw, String iconImage) {
-        Session session = sessionFactory.openSession();
-        session.beginTransaction();
+        Session session = SessionManager.getInstance().getSession();
         List usersList = session.createQuery( "from User" ).list();
         for ( User user : (List<User>) usersList ) {
             if (user.getuId().equals(uId)) {
@@ -85,15 +80,12 @@
             }
         }
         User findUser = (User) session.load(User.class, uId);
-        session.getTransaction().commit();
-        session.close();
         return findUser;
     }
 
     public static User getUserById(String uId) {
         //与えられたuIdのUser情報を返す
-        Session session = sessionFactory.openSession();
-        session.beginTransaction();
+        Session session = SessionManager.getInstance().getSession();
         List usersList = session.createQuery( "from User" ).list();
         //uIdを比較し、一致した場合はNameとiconUriを返す。一致しない場合はbreak
         for ( User user : (List<User>) usersList ) {
@@ -105,8 +97,6 @@
                 break;
             }
         }
-        session.getTransaction().commit();
-        session.close();
         //一致しない場合は返す必要がないのでnull
         return null;
     }
@@ -118,16 +108,12 @@
     }
 
     public static DeleteResult deleteUser(String uId) {
-        Session session = sessionFactory.openSession();
-        session = sessionFactory.openSession();
-        session.beginTransaction();
+        Session session = SessionManager.getInstance().getSession();
         Request deleteRequest = (Request) session.load(Request.class, uId);
         if(deleteRequest != null){
             session.delete(deleteRequest);
             System.out.println("massage: Already Deleted");
         }
-        session.getTransaction().commit();
-        session.close();
         return DeleteResult.SUCCESS;
     }
 
@@ -135,7 +121,6 @@
         if(checkPassword(uId,pw)) {
             Token testtoken = getInstance().createToken(uId);
             //tokenを作成後値を返す
-//            System.out.println("true");
             return testtoken;//testToken
         }else{
             return null;
@@ -143,8 +128,7 @@
     }
 
     public static DeleteResult logout(String uId,String token) {
-        Session session = sessionFactory.openSession();
-        session.beginTransaction();
+        Session session = SessionManager.getInstance().getSession();
         List usersList = session.createQuery( "from logout" ).list();
         for ( User user : (List<User>) usersList ) {
             if (user.getuId().equals(uId)) {