javax.servlet.ServletException: Not running on Jetty, JSR-356 support unavailable

Question

I am facing a problem while deploying a war on to tomcat instance,

Tomcat version details,

D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63\bin>version.bat
Using CATALINA_BASE:   "D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63"
Using CATALINA_HOME:   "D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63"
Using CATALINA_TMPDIR: "D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63\temp"
Using JRE_HOME:        "C:\Program Files\Java\jdk1.7.0_07"
Using CLASSPATH:       "D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63\bin\bootstrap.jar;D:\Kiran\Kiran\Softwares DH\Webservers\apache-to
mcat-7.0.63\bin\tomcat-juli.jar"
Server version: Apache Tomcat/7.0.63
Server built:   Jun 30 2015 08:08:33 UTC
Server number:  7.0.63.0
OS Name:        Windows 7
OS Version:     6.1
Architecture:   amd64
JVM Version:    1.7.0_07-b11
JVM Vendor:     Oracle Corporation
D:\Kiran\Kiran\Softwares DH\Webservers\apache-tomcat-7.0.63\bin>

POM Dependency :

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

I have created a war using maven plugin and tried to deploy on tomcat 7. I was able to deploy but unable to start the webapp. When I find the logs for it, it gave below stacktrace,

SEVERE: Error during ServletContainerInitializer processing
javax.servlet.ServletException: Not running on Jetty, JSR-356 support unavailable
    at org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer.onStartup(WebSocketServerContainerInitializer.java:146)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5520)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1322)
    at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:694)
    at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:217)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

Any help would be appreciated. Thank you.

---

Edit :

It runs fine when I run the application using STS

Answer 1

Search in pom.xml for

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jetty</artifactId>
</dependency>

and remove it.

Answer 2

The problem is identified to be confusion over the websocket jars of tomcat and my application jars. I have removed it from the war file and it started working,

I used maven plug in to remove the jars as below,

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>
    <configuration>
        <packagingExcludes>WEB-INF/lib/websocket-*.jar</packagingExcludes>
    </configuration>
</plugin>

The jars which were creating problem are,