Spring Boot Websockets in Wildfly

Question

Hi I need to deploy my Spring Boot app into Wildfly 8.1 and I'm getting the following exception:

Caused by: java.lang.RuntimeException: java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to io.undertow.websockets.jsr.ServerWebSocketContainer at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:219) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:87) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.start(UndertowDeploymentService.java:72) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) [jboss-msc-1.2.2.Final.jar:1.2.2.Final] at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881) [jboss-msc-1.2.2.Final.jar:1.2.2.Final] ... 3 more Caused by: java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to io.undertow.websockets.jsr.ServerWebSocketContainer at io.undertow.websockets.jsr.Bootstrap$WebSocketListener.contextInitialized(Bootstrap.java:69) at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:173) at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:190) ... 7 more

It seems that my setup for websockets and messaging might be the culprit? I was looking at this https://github.com/joshlong/boot-examples/issues/2 And none of the proposed solutions seem to work for me. Here are the dependencies from my pom:

<parent>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-parent</artifactId>     <version>1.1.6.RELEASE</version> </parent>  <dependencies>      <!--Testing-->     <dependency>         <groupId>junit</groupId>         <artifactId>junit</artifactId>         <version>4.11</version>         <scope>test</scope>     </dependency>     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-test</artifactId>         <scope>test</scope>     </dependency>      <dependency>         <groupId>org.apache.httpcomponents</groupId>         <artifactId>httpclient</artifactId>         <version>${apache.httpcomponents.version}</version>     </dependency>      <!-- Spring -->     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-web</artifactId>     </dependency>     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-tomcat</artifactId>         <scope>provided</scope>     </dependency>     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-actuator</artifactId>     </dependency>     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-data-jpa</artifactId>     </dependency>     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-websocket</artifactId>     </dependency>     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-messaging</artifactId>     </dependency>     <dependency>         <groupId>org.thymeleaf</groupId>         <artifactId>thymeleaf-spring4</artifactId>     </dependency>     <dependency>         <groupId>com.fasterxml.jackson.core</groupId>         <artifactId>jackson-databind</artifactId>     </dependency>      <!--Database-->     <dependency>         <groupId>org.hsqldb</groupId>         <artifactId>hsqldb</artifactId>         <version>2.3.1</version>     </dependency>     <dependency>         <groupId>postgresql</groupId>         <artifactId>postgresql</artifactId>         <version>9.1-901.jdbc4</version>     </dependency> </dependencies> 

I tried using the direct spring-boot-starter-websocket as well but get the same thing. Here is my websocket config too:

@Configuration @EnableWebSocketMessageBroker public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer{  @Override public void configureMessageBroker(MessageBrokerRegistry registry) {     super.configureMessageBroker(registry);     registry.enableSimpleBroker("/ssp");     registry.setApplicationDestinationPrefixes("/inc"); }  @Override public void registerStompEndpoints(StompEndpointRegistry registry) {     registry.addEndpoint("/update/applications"); } } 

Thanks for taking the time to read this. Any help would me most appreciated. Also, this is my first boot application. :/

Answer 1

You need exclude tomcat-embed-websocket

<dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-web</artifactId>         <exclusions>             <exclusion>                 <groupId>org.apache.tomcat.embed</groupId>                 <artifactId>tomcat-embed-websocket</artifactId>             </exclusion>         </exclusions>     </dependency>