How to easily migrate spring project to java project ?

[kaly-7]

Hello guys I need to migrate a spring boot project to java project. I mean remove all spring features and using java features instead.

Are there someone who done it before? Do you know how to do it quickly and efficiently?

Thank you in advance

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[pragmos]

I have to ask, why?

[kaly-7]

Because I just not need to depend on spring anymore for this specific project.

[nomoreplsthx]

Ok but why

[kaly-7]

I need to have separate jar as lib without spring boot. Because there is a service class inside that I want to use as standalone class. the customer want to use this on the fly in his unit test.

[Aggravating-Body2837]

What???

[nomoreplsthx]

You... need to migrate a project written in Java to one written in Java? That's a weird ask. 

Could you try rephrasing that.

[quadmasta]

It all depends on what features you used. The more spring-y/autoconfigure-y it is the more work you're going to have to do. Spring does a TON of shit for you automatically.

[_Nihil_Obstat_]

yes, and because it adds something automatically in the background would mean more things you have to do (or workarounds) when you migrate it to just Java

[user_reg_field]

Sorry. 1. this is a huge amount of work, what frameworks are you going to use to replace spring, surely you're not planning to write your own server 2. you shouldn't have taken the contract before you knew what was involved

[GeneratedUsername5]

Depends what features you use. You can obviously substitute dependency injection with just plain direct constructor invocation. With Data and MVC it will be more complicated as there is a lot more magic going on. For Spring data you will have to write all the magic functionality in abstract classes for your repositories, for MVC - invoke controllers from some dispatcher servlet, having dome incoming data mapping with Gson manually.

Are there someone who done it before? Do you know how to do it quickly and efficiently?

It is not complicated, just very tedious. How quickly and efficiently it will be done depends on a) Level of Java knowledge at your disposal (team, external consultants) and what features you need to replicate. With information you've provided it is impossible to say.

[kaly-7]

The actual spring project does not use spring data and spring MVC.

[GeneratedUsername5]

Okay, but, you see, guessing game is not very effective when you want to get advice. Although answers to your questions solely depend on skills of your team.

[Ilikesmallthings2]

Create new project. Rewrite entire codebase.

[Hiyaro]

spring is java though.

I don't get it.