Spring Boot - where to place the jsp files

Question

I am trying to develop a new Spring boot application using MVC as a first step to move my existing Spring MVC application to Spring boot.

However, I am facing an is

Answer 1

I have gone exactly the same path. Upgrading a jsp, xml-based spring application to spring boot 2. There are few things you need to consider when migrating:

First remove @EnableWebMvc.

Second you need @ComponentScan on top of MyFirstAppApplication class.

Try to read this article, it helped me alot https://htr3n.github.io/2018/12/jsp-spring-boot/

Third you also need this dependeny together with embed-jasper:

org.apache.tomcat.embed
tomcat-embed-core
9.0.22

Last but not least this is a shortcut for creating a view handler in java

spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix:.jsp

and as far as I know it only works in spring boot 2. You can have Java implementation instead and debug it to see if it ever hit that.

@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");       
    registry.viewResolver(resolver);
}

Because in my case for example I didn't even need a specific or default resolver. I had different resolver for each Controller that I had to define in xml/bean and inject in each class.