diff --git a/hibernate-project/pom.xml b/hibernate-project/pom.xml
index db4126b..90f5bf0 100644
--- a/hibernate-project/pom.xml
+++ b/hibernate-project/pom.xml
@@ -30,6 +30,13 @@
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
+            <dependency>
+                <groupId>org.glassfish.jersey</groupId>
+                <artifactId>jersey-bom</artifactId>
+                <version>3.1.5</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -72,6 +79,59 @@
             <artifactId>reflections</artifactId>
             <version>0.10.2</version>
         </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>2.0.17</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>5.17.0</version>
+        </dependency>
+
+        <!-- JAX-RS (Jersey) -->
+        <dependency>
+            <groupId>org.glassfish.jersey.core</groupId>
+            <artifactId>jersey-server</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.inject</groupId>
+            <artifactId>jersey-hk2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.media</groupId>
+            <artifactId>jersey-media-json-jackson</artifactId>
+        </dependency>
+
+        <!-- H2 Database (pour tests, sinon MySQL/PostgreSQL) -->
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>2.2.224</version>
+            <scope>runtime</scope>
+        </dependency>
+        <!-- Servlet API -->
+        <dependency>
+            <groupId>jakarta.servlet</groupId>
+            <artifactId>jakarta.servlet-api</artifactId>
+            <version>6.0.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-server</artifactId>
+            <version>11.0.25</version>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.jetty</groupId>
+            <artifactId>jetty-servlet</artifactId>
+            <version>11.0.25</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.jersey.containers</groupId>
+            <artifactId>jersey-container-servlet</artifactId>
+        </dependency>
 
     </dependencies>
 
diff --git a/hibernate-project/src/main/java/com/humanbooster/App.java b/hibernate-project/src/main/java/com/humanbooster/App.java
index 6a4abbd..8b6d01f 100644
--- a/hibernate-project/src/main/java/com/humanbooster/App.java
+++ b/hibernate-project/src/main/java/com/humanbooster/App.java
@@ -28,7 +28,7 @@ public class App {
 
         SessionFactory sessionFactory;
 
-        if (HibernateConfig.LOCAL) sessionFactory = HibernateConfig.getSessionFactory();
+        if (HibernateConfig.isLocalEnvironment()) sessionFactory = HibernateConfig.getSessionFactory();
 
         else {
             StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
diff --git a/hibernate-project/src/main/java/com/humanbooster/config/HibernateConfig.java b/hibernate-project/src/main/java/com/humanbooster/config/HibernateConfig.java
index c5900d2..9f764ce 100644
--- a/hibernate-project/src/main/java/com/humanbooster/config/HibernateConfig.java
+++ b/hibernate-project/src/main/java/com/humanbooster/config/HibernateConfig.java
@@ -7,13 +7,13 @@ import org.reflections.Reflections;
 import jakarta.persistence.Entity;
 
 public class HibernateConfig {
+
     private static final SessionFactory sessionFactory;
-    public static final boolean LOCAL = true;
+    private static final boolean LOCAL = true;
     private static String url;
     private static String username;
     private static String password;
 
-
     static {
 
         if (LOCAL) {
@@ -46,5 +46,9 @@ public class HibernateConfig {
     public static SessionFactory getSessionFactory() {
         return sessionFactory;
     }
+
+    public static boolean isLocalEnvironment() {
+        return LOCAL;
+    }
 }
 
diff --git a/hibernate-project/src/main/java/com/humanbooster/dao/GenericDaoImpl.java b/hibernate-project/src/main/java/com/humanbooster/dao/GenericDaoImpl.java
index 4ea7972..bd502f0 100644
--- a/hibernate-project/src/main/java/com/humanbooster/dao/GenericDaoImpl.java
+++ b/hibernate-project/src/main/java/com/humanbooster/dao/GenericDaoImpl.java
@@ -47,7 +47,7 @@ public abstract class GenericDaoImpl<T, ID> implements GenericDao<T, ID> {
     public void delete(ID id) {
         try (Session session = sessionFactory.openSession()) {
             session.beginTransaction();
-            T entity = session.get(entityClass, id);
+            T entity = session.find(entityClass, id);
             if (entity != null) session.remove(entity);
             session.getTransaction().commit();
         }
diff --git a/hibernate-project/src/main/java/com/humanbooster/model/User.java b/hibernate-project/src/main/java/com/humanbooster/model/User.java
index 92c903e..ffa32f7 100644
--- a/hibernate-project/src/main/java/com/humanbooster/model/User.java
+++ b/hibernate-project/src/main/java/com/humanbooster/model/User.java
@@ -1,6 +1,7 @@
 package com.humanbooster.model;
 
 import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
 
 import java.util.List;
 
@@ -11,7 +12,10 @@ public class User {
     @GeneratedValue (strategy = GenerationType.IDENTITY)
     private Long id;
 
+    @NotNull
     private String name;
+
+    @NotNull
     private String email;
 
     @OneToMany(mappedBy="author", cascade = CascadeType.ALL, orphanRemoval = true)