I am having Spring-Boot w Vaadin project where I had to define some Spring-MVC REST controllers. While using Vaadin UI all is working fine. But when I invoke any of the REST controllers functionality wise all seems working but I can see in logs there is an exception thrown.
1102038 2017-08-09 09:36:12.223 [ajp-nio-8009-exec-5] DEBUG o.s.c.e.SimpleApplicationEventMulticaster - Non-matching event type for listener: org.springframework.boot.web.context.ServerPortInfoApplicationContextInitializer$$Lambda$102/980450043@270a6b1b
java.lang.ClassCastException: org.springframework.web.context.support.ServletRequestHandledEvent cannot be cast to org.springframework.boot.web.context.WebServerInitializedEvent
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:399)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:353)
at org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1078)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1009)
at org.springframework.web.servlet.FrameworkServlet.doPut(FrameworkServlet.java:892)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:651)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:855)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:97)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilterAbstractAuthenticationProcessingFilter.java:200)
Thanks to the source code availability I started debugging and found that if I override org.springframework.context.event.GenericApplicationListenerAdapter.supportsEventType(ResolvableType eventType) like bellow everything is going back to normal.
@Override
@SuppressWarnings("unchecked")
public boolean supportsEventType(ResolvableType eventType) {
if (this.delegate instanceof SmartApplicationListener) {
Class<? extends ApplicationEvent> eventClass = (Class<? extends ApplicationEvent>) eventType.resolve();
return (eventClass != null &&
((SmartApplicationListener) this.delegate).supportsEventType(eventClass));
} else
return (this.declaredEventType == null ||
(this.declaredEventType.isAssignableFrom(eventType) &&
!this.declaredEventType.getType().toString().equals("E")));
}
(I have added !this.declaredEventType.getType().toString().equals("E") to the last return statement)
Question: Should I stick with this hack or just might miss something in a configuration? Thanks in advance.
