Setting up a 2nd Springboot application to use a #Autowired repository #Component from App 1 caused incorrect loading and REST requests broke - spring

Question

I have setup 2 Spring Boot applications. I am trying to #Autowire the repository from Application 1 in Application 2.
Both of these applications will be using REST to communicate back and forth. When I ran application 2 alone without the #Autowire of the repository for Application 1 I could correctly communicate with http://localhost:8082/runTestExecution via the #RestController HomeController class without an issue.
When I setup the #Autowire and #ComponentScan({"com.miw.mcb.server.repositories"}) so that I have access to the repositories of Application 1, Application 2 no longer functions correctly.
I am unable to reach the #RestController at http://localhost:8082/runTestExecution.
I also had a class which implemented CommandLineRunner which would run when I started up Spring Boot and this no longer runs either.
#Component
public class InitialRunner implements CommandLineRunner
Is this a issue because Application 1 also has a main class which loads #SpringBootApplication?
Can anyone suggest what is going wrong?
Below I have outlined my steps I took to add the jar of Application 1 and #Autowired class to Application 2
Here are the steps I took:
Setup maven to have the new library dependency and add it to the maven library mvn:install
Add Autowired bean to the HomeController class:
#RestController
public class HomeController {
#Autowired
TestSuiteRepository repo;
#RequestMapping(value = "/")
public String index() {
return "index";
}
#RequestMapping("runTestExecution")
public String runTestExecution(#RequestParam(value = "testExecutionID", required = true) String testExecutionID) {
return "Good";
}
}
Main class
#SpringBootApplication
public class AdbService {
public static void main(String[] args) {
SpringApplication.run(AdbService.class, args);
}
TestResultRepository class
package com.miw.mcb.server.repositories;
#Component
public interface TestResultRepository extends PagingAndSortingRepository<TestResult, Long> {
}
Add #Configuration and #ComponentScan, only supply the comment scan for the repositories package of the JAR file
Application 2 main class
#Configuration
#ComponentScan({"com.miw.mcb.server.repositories"})
#SpringBootApplication
public class AdbService {
public static void main(String[] args) {
SpringApplication.run(AdbService.class, args);
}
}
Application 1 Config Class
#Configuration
#ComponentScan({"com.miw.mcb.server.repositories"})
public class AppConfig {
}
Application 1 Main class
#SpringBootApplication
public class ReactAndSpringDataRestApplication {
public static void main(String[] args) {
SpringApplication.run(ReactAndSpringDataRestApplication.class, args);
}
}
Prior to adding the #ComponentScan I got the following stack trace:
2016-04-14 13:29:56 - Application startup failed
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'homeController': Injection of autowired
dependencies failed; nested exception is
org.springframework.beans.factory.BeanCreationException: Could not
autowire field: com.miw.mcb.server.repositories.TestSuiteRepository
com.miw.mcb.adbservice.HomeController.repo; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
[com.miw.mcb.server.repositories.TestSuiteRepository] found for
dependency: expected at least 1 bean which qualifies as autowire
candidate for this dependency. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
at
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766)
at
org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1191)
at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1180)
at com.miw.mcb.adbservice.AdbService.main(AdbService.java:38) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) at
org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:478)
at java.lang.Thread.run(Thread.java:745)

Answer 1

Try to use #EnableJpaRepositories instead of #ComponentScan for JpaRepositories:
#Configuration
//#ComponentScan({"com.miw.mcb.server.repositories"})
#EnableJpaRepositories("com.miw.mcb.server.repositories")
#SpringBootApplication
public class AdbService {
public static void main(String[] args) {
SpringApplication.run(AdbService.class, args);
}
}