fix imports/dependencies

pom.xml

@@ -170,13 +170,14 @@
 			<artifactId>spring-integration-mail</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-websocket</artifactId>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-messaging</artifactId>
+			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-test</artifactId>
-			<scope>test</scope>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-websocket</artifactId>
+			<scope>compile</scope>
 		</dependency>
 		<!-- Security -->
 		<dependency>
@@ -244,8 +245,8 @@
 			<artifactId>javax.mail</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-test</artifactId>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-test</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -253,6 +254,17 @@
 			<artifactId>spring-security-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<version>3.11.1</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-test</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>

src/main/java/de/thm/arsnova/config/WebSocketConfig.java

@@ -20,7 +20,7 @@ public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
 
 	@Override
 	public void registerStompEndpoints(StompEndpointRegistry registry) {
-		registry.addEndpoint("/ws");
+		registry.addEndpoint("/ws").setAllowedOrigins("*").withSockJS();
 	}
 
 }