Eclipse Error: Websockets are currently only supported in Tomcat - eclipse

Question

I'm trying to use tomcat in a webapp and want to use Spring’s support for embedding the Tomcat servlet container as the HTTP runtime, instead of deploying to an external instance as it does in the tutorial I am basing my app off of: http://spring.io/guides/gs/messaging-stomp-websocket/
However, I am getting this stack error:
Caused by: java.lang.IllegalStateException: Websockets are currently only supported in Tomcat (found class org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory).
at org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration$1.customize(WebSocketAutoConfiguration.java:74)
at org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizerBeanPostProcessor.postProcessBeforeInitialization(EmbeddedServletContainerCustomizerBeanPostProcessor.java:67)
at org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizerBeanPostProcessor.postProcessBeforeInitialization(EmbeddedServletContainerCustomizerBeanPostProcessor.java:54)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:407)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
... 16 more
I'm not sure how it's happening now and not in the Spring example. Here is my POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework</groupId>
<artifactId>gs-messaging-stomp-websocket</artifactId>
<version>0.1.0</version>
<url>http://www.springframework.org</url>
<properties>
<maven.test.failure.ignore>true</maven.test.failure.ignore>
<spring.framework.version>3.0.6.RELEASE</spring.framework.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.1.1.RELEASE</version>
</parent>
<repositories>
<repository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/libs-snapshot</url>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/libs-snapshot</url>
<snapshots><enabled>true</enabled></snapshots>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
<version>1.1.1.RELEASE</version>
<exclusions>
<exclusion>
<artifactId>log4j-over-slf4j</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
<version>4.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-all</artifactId>
<version>5.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-core</artifactId>
<version>2.13.1</version>
</dependency>
<dependency>
<groupId>org.apache.directory.studio</groupId>
<artifactId>org.apache.commons.pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>apache-camel</artifactId>
<version>2.13.1</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
<scope>system</scope>
<version>1.6</version>
<systemPath>C:\Program Files\Java\jdk1.8.0_05\lib\tools.jar</systemPath>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>1.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-webapp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
I have all of the dependencies that the Spring example uses. What are factors that could affect the application's ability to use Tomcat?
Thanks in advance for any help!
Edit:
Here is Application.class:
package hello;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.SpringApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.stereotype.Component;
#Component
#EnableAutoConfiguration
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
here is my main:
package com.example.integration;
import hello.*;
import org.apache.camel.ProducerTemplate;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestCamelSpring {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("camelspring.xml");
ProducerTemplate camelTemplate = context.getBean("camelTemplate", ProducerTemplate.class);
Application.main(args);
System.out.println("Message Sending started");
camelTemplate.sendBody("jms:queue:testQSource","Sample Message");
System.out.println("Message sent");
}
}

Answer 1

You have a jetty dependency:
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-webapp</artifactId>
</dependency>
So you're essentially replacing embedded Tomcat with Jetty. If you don't want Jetty, don't use Jetty dependency.