In Springboot 3.0 We have registered a servlet ss000Action that extends from HttpServlet and does nothing inside. Use ServletRegistrationBean to register ss000Action servlet with

addUrlMappings("/sp/*")
setLoadOnStartup(1)

Create ss0001Filter Use ServletRegistrationBean to register ss000Action servlet into ss0001Filter used to remove /sp on url.

setFilter(ss0001Filter)
addServletRegistrationBeans(ss000Action ())

When submitting a url: /sp/ss2000 => ss0001Filter => /ss2000 => ss2000 Controller processing => forward :/sp/ss1000

In the controller I have registered: @RequestMapping(value = "/sp/ss1000" However, a white screen error is occurring. Please help me explain why this is so. Is it because I registered a servlet that overrides the Dispatcher Servlet? Is there any documentation that explains this? What to do to solve it?

Comment From: bclozel

Thanks for getting in touch, but it feels like this is a question that would be better suited to StackOverflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.

Your question on StackOverflow should have more detailed code snippets as it's not clear which Servlets are registered and how and what behavior you are expecting.