Spring boot 404 and still works - spring-mvc

Question

When i run my spring boot application as JAR file, all my controllers work fine(though i still get "Did not find handler method for ..." in logs but somehow appropriate controller and view is rendered just fine. When i run this in WAR mode, it's giving me 404 with same error in logs "Did not find handler method for ...".
Here is my application class:
#SpringBootApplication
public class RAApplication extends SpringBootServletInitializer {
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
//set register error pagefilter false
//setRegisterErrorPageFilter(false);
return application.sources(RAApplication.class);
}
public static void main(String[] args) throws Exception {
SpringApplication.run(RAApplication.class, args);
}
}
My main application class is under com.xyz.abc and all controllers under say com.xyz.abc.controllers and every other component is in child package of com.xyz.abc .
/mappings and /beans work just fine and /mappings do show something like this :
"{[/],methods=[GET]}":{"bean":"requestMappingHandlerMapping","method":"public java.lang.String com.xyz.abc.controllers.HomeController.renderIndexPage(org.springframework.ui.Model)"}
FYI, I checked there is only one mapping of [/] in case it's useful.
Any pointers to what might be going wrong? All usual searches points to controllers not being found but /mappings show all of them are mapped correctly but why does it give 404 in war mode and works with error in jar mode?
Thanks!
UPDATE : I've set
servlet.contextPath=/
in application.properties and rest other actuator endpoints are configured correctly too e.g.
15:21:09.253 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'metricsFilter' to: [/*]
15:21:09.254 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'characterEncodingFilter' to: [/*]
15:21:09.254 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
15:21:09.254 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'httpPutFormContentFilter' to: [/*]
15:21:09.254 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'requestContextFilter' to: [/*]
15:21:09.255 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'webRequestLoggingFilter' to: [/*]
15:21:09.255 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Filter errorPageFilter was not registered (disabled)
15:21:09.255 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.FilterRegistrationBean - Mapping filter: 'applicationContextIdFilter' to: [/*]
15:21:09.255 [localhost-startStop-1] INFO org.springframework.boot.web.servlet.ServletRegistrationBean - Mapping servlet: 'dispatcherServlet' to [/]
15:21:09.289 [localhost-startStop-1] DEBUG org.springframework.boot.web.filter.OrderedRequestContextFilter - Initializing filter 'requestContextFilter'
15:21:09.291 [localhost-startStop-1] DEBUG org.springframework.boot.web.filter.OrderedRequestContextFilter - Filter 'requestContextFilter' configured successfully
15:21:09.291 [localhost-startStop-1] DEBUG org.springframework.boot.web.filter.ApplicationContextHeaderFilter - Initializing filter 'applicationContextIdFilter'
15:21:09.291 [localhost-startStop-1] DEBUG org.springframework.boot.web.filter.ApplicationContextHeaderFilter - Filter 'applicationContextIdFilter' configured successfully

Answer 1

If you deploy your WAR in a web container like Tomcat then you have a context path.
For example localhost:8080/ in JAR mode becomes localhost:8080/myapp/ in web container.