Spring mvc cannot autowire dao classes in junit tests - spring-mvc

Question

I have a spring mvc web application configured using javaconfig and I am trying to autowire my dao classes on the junit test class and I am using #EnableWebMvc for the servlet config, but it gives me the following exception:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'com.jahidul.islam.test.tests.TestJunit': Unsatisfied dependency expressed through field 'strengthDao'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.jahidul.islam.dao.StrengthDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
My Test Class which is used for the junit test:
#RunWith(SpringJUnit4ClassRunner.class)
#WebAppConfiguration
#ContextHierarchy({
#ContextConfiguration(loader=AnnotationConfigWebContextLoader.class),
#ContextConfiguration(classes=WebAppInitializer.class)
})
public class TestJunit {
#Autowired
WebApplicationContext context;
#Autowired
StrengthDao strengthDao;
#Test
public void test() {
System.out.println(strengthDao.getStrength(1));
}
}
My WebAppInitializer Class which initializes all the configurations:
public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] {WebAppBeanConfig.class, WebAppDaoConfig.class, WebAppServiceConfig.class, WebSecurityConfig.class};
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class[] {WebAppServletConfig.class};
}
#Override
protected String[] getServletMappings() {
return new String[] {"/"};
}
#Override
protected Filter[] getServletFilters() {
return new Filter[]{new HiddenHttpMethodFilter()};
}
#Override
protected DispatcherServlet createDispatcherServlet(WebApplicationContext servletAppContext) {
final DispatcherServlet dispatcherServlet = (DispatcherServlet) super.createDispatcherServlet(servletAppContext);
dispatcherServlet.setThrowExceptionIfNoHandlerFound(true);
return dispatcherServlet;
}
#Override
public void onStartup(ServletContext servletContext) throws ServletException {
super.onStartup(servletContext);
servletContext.setInitParameter("spring.profiles.active", "production");
}
}
My Dao Class which is used to fetch data from mysql database using hibernate:
#Component("strengthDao")
#Transactional
public class StrengthDao {
#Autowired
private SessionFactory sessionFactory;
private Session session() {
return sessionFactory.getCurrentSession();
}
public List<Strength> getAllStrengths(int perPage, int offset) {
CriteriaBuilder builder = session().getCriteriaBuilder();
CriteriaQuery<Strength> criteriaQuery = builder.createQuery(Strength.class);
Root<Strength> root = criteriaQuery.from(Strength.class);
criteriaQuery.select(root);
return (List<Strength>) session().createQuery(criteriaQuery).setFirstResult(offset).setMaxResults(perPage).getResultList();
}
public long strengthCount() {
CriteriaBuilder builder = session().getCriteriaBuilder();
CriteriaQuery<Long> criteriaQuery = builder.createQuery(Long.class);
Root<Strength> root = criteriaQuery.from(Strength.class);
criteriaQuery.select(builder.count(root));
return (long) session().createQuery(criteriaQuery).getSingleResult();
}
public void saveOrUpdateStrength(Strength strength) {
session().saveOrUpdate(strength);
}
public Strength getStrength(int id) {
return (Strength) session().get(Strength.class, id);
}
public void deleteStrength(Strength strength) {
session().delete(strength);
}
}

Answer 1

Either add componentScan annotation to TestJunit class to auto detect #Repository components.
Or create a java config bean in TestJunit class using #Bean annotation like
#Bean
public StrengthDao StrengthDao(){
return new StrengthDao ();
}