Spring Boot war file on tomcat: errorPageFilter cannot be cast to TomcatEmbeddedServletContainerFactory

Question

I\'m trying to convert a simple Spring Boot app into a war file for deployment to my tomcat server but I keep on getting this error:

Caused by: org.springframewo         


        

Answer 1

Why are your trying to configure embedded Tomcat when you want to deploy it on external container? I had similar problem and what finally worked for me was to completely exclude tomcat starter from the project dependencies. Since spring-boot-starter-tomcat is dependency of spring-boot-starter-web use something like this:

compile ('org.springframework.boot:spring-boot-starter-web') {
    exclude module: 'spring-boot-starter-tomcat'
}

And, of course, delete line that explicitly imports spring-boot-starter-tomcat (it's not needed, even in embedded mode).

You may have a problem if you want your app to be deployable in both ways - I didn't have to worry about this in my case.