Spring boot controller path giving 404 on websphere 9

Question

I have a spring boot 2.0 application that is working fine on embedded tomcat , now I generated a war from this applcation using apply plugin: 'war' in build.gradle file , the war is generated and deployed successfully on websphere 9 ... I tried hitting the context root, it gives the index.html correctly ... but when try to reach any path that was originally reached on the embedded tomcat it gives Error 404: java.io.FileNotFoundException: SRVE0190E: File not found: /path/mapped/in/controller ... can any one tell what is missing ?

this is the SpringBootApplication class code :

@SpringBootApplication
@MapperScan(basePackages = { "com.mypack.dao" })
public class MyApplication extends SpringBootServletInitializer{

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(MyApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}