Error creating bean with name 'xxx' - spring

Question

I'm having issues with dependency injection.
I've tried both #EJB and #Autowired, but nothing works.
This is what i have now:
HomeController
#Controller
#ComponentScan(basePackages = "org.vives.repositories")
public class HomeController extends HttpServlet {
private final BeerRepository beerRepository;
#Autowired
public HomeController(BeerRepository beerRepository) {
this.beerRepository = beerRepository;
}
#GetMapping("/")
public String index(Model model) {
List<Brewer> brewers = this.beerRepository.getAll();
model.addAttribute("brewers", brewers);
return "index";
}
}
When I hover over beerRepository parameter, I get that:
BeerRepository
#Stateless
#Repository
public class BeerRepository {
#PersistenceContext(unitName = "vivesPU")
private EntityManager entityManager;
public List<Brewer> getAll() {
List<Brewer> brewers = new ArrayList<>();
Brewer br0 = new Brewer("WESTVLETEREN BREWERY");
Brewer br1 = new Brewer("BRASSERIE CANTILLON");
Brewer br2 = new Brewer("RODENBACH BREWERY");
Brewer br3 = new Brewer("KULMINATOR");
Brewer br4 = new Brewer("‘T BRUGS BEERTJE");
brewers.add(br0);
brewers.add(br1);
brewers.add(br2);
brewers.add(br3);
brewers.add(br4);
return brewers;
}
}
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="vivesPU" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>jdbc/beers</jta-data-source>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.DerbyTenSevenDialect"/>
<property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform"/>
<property name="hibernate.hbm2ddl.auto" value="create-drop"/>
<property name="hibernate.show_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>
Error log (some of it)
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'homeController' defined in file [..\HomeController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beerRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'vivesPU' available
...
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'beerRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'vivesPU' available
...
Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.apache.catalina.LifecycleException: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'vivesPU' available]]
vivesPU is the persistance-unit name, so why would it even go there?
project structure
Can someone explain to me what is happening? I'm really confused. Most of the documentation and posts are old (Spring 4 and Spring XML) which are barely relevant.

Answer 1

Either you have to autowire BeerRepository or remove the below line
private final BeerRepository beerRepository;

Answer 2

Your controller is completely false. It should be
#Controller
#ComponentScan(basePackages = "org.vives.repositories")
public class HomeController extends HttpServlet {
#Autowired
private BeerRepository beerRepository;
#GetMapping("/")
public String index(Model model) {
List<Brewer> brewers = beerRepository.getAll();
model.addAttribute("brewers", brewers);
return "index";
}
}