Spring welcome-file-list correct mapping

Question

I know that in spring I must define welcome-file, which should be outside of WEB-INF folder, so I define it like this:

web.xml:

Answer 1

In case of java configuration you can override two methods in class that extends WebMvcConfigurerAdapter

@Override
public void addViewControllers(ViewControllerRegistry registry) {
    registry.addViewController("/").setViewName("/index");
}

@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
    configurer.enable();
}

If you wanna serve index.html explicitly, turn it into a resource override a method in the same class as below:

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/index.html").addResourceLocations("/WEB-INF/views/index.html");
}

Of course addResourceLocations must follows the folder choosen to hold your views.

See these samples