add mongo http session config to use mongo as session store instead of ram

pom.xml

@@ -34,6 +34,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-mongodb</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.session</groupId>
+			<artifactId>spring-session-data-mongodb</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>

src/main/java/com/cloudcomputing/todo/controller/HttpSessionConfig.java

+package com.cloudcomputing.todo.controller;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.session.data.mongo.config.annotation.web.http.EnableMongoHttpSession;
+
+@Configuration
+@EnableMongoHttpSession
+public class HttpSessionConfig {
+}

src/main/java/com/cloudcomputing/todo/controller/UserController.java

@@ -35,6 +35,7 @@ public class UserController {
     @PostMapping("/signin")
     public ResponseEntity<UserDTO> login(HttpServletRequest request, @RequestBody UserDTO user) {
         boolean loginSuccessful = userService.login(request, user);
+
         if(loginSuccessful){
             return new ResponseEntity<>(userService.getUser(user), HttpStatus.OK);
         }