如何将 spring 引导应用程序集成到旧版 java 应用程序中并隔离它？

Question

we have a very old java web application (about 15 years old,) with servlet. Spring version 3 and.., technologies, I want to develop a rest API for this application, in order to be able to use modern technologies I decided to develop a new modern spring (boot) web application without an embedded server and bootstrap it using a new servlet that I will define in the legacy app web.xml . I also need to isolate dependencies using Java ClassLoader . it is obvious that the new app has dependencies inside the old one and I need to be able to inject them. I know this is possible (OSGI frameworks use a very similar approach). but I have some questions.

first question(s): is this a correct/sensible strategy for this task? is there any better way?

second question: where can I find some resources to study and learn in order to implement this strategy?

Answer 1

I would personally look to update your Java code to use Spring boot and build new controllers, services and new views using Thymeleaf. It may be a bit of upfront work, however, once you port your App to use Spring Boot, you will be able to manage it better.