springboot 将类从一个项目导入到另一个项目

Question

my scheme is as follows

-project1 (springboot maven Initializr)
  -model
  -service
  -controller
  -properties(mongodb)
-project2 (springboot maven Initializr)
  -controller (import project1 service)

I already added it to dependencies and I call the service of my project1 as follows:

import com.example.project1.service.Document_service;

I don't have any typing error in my project2, but when I run project2 I have the error:

com/example/project2/controller/project2_controller.java:[11,33] package com.example.project1.service 
does not exist
symbol:   class Document_service
location: class com.example.project2.controller.project2_controller
-> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

I need help to run the service1 project on my project2, how can I do it?

Answer 1

Try to clone this project Clef Workflow . And see my architecture. I do my best to do it.

Answer 2

If I've got your question right, you've made a dependency of one spring boot project on another.

This is, in general, a wrong approach and should not be done, because spring boot artifact is not really a JAR, it has an extension "jar" but doesn't have a structure of jar and hence can't be used by java itself in runtime or a build tool as a dependency (its a very special setup with custom classloader developed by spring boot team, with all the internal dependencies baked into BOOT-INF/lib folder).

In terms of resolution, consider introducing a module with all the relevant code but so that it won't be a spring boot service by itself - just a regular JAR.

Then project1 and project2 could both add this "common" module as a dependency and this should work.

Answer 3

try adding in project2 the following:

@SpringBootApplication
@ComponentScan({"com.example.project1", "com.example.project2" })