Here is a sample class below
#Service("testService")
public class TestService {
public String something() {
return "abc";
}
}
I want to extend the class and let the container know that it needs to pick up my extended class from now.
#Service("extendedTestService")
public class ExtendedTestServiceMock extends TestService {
#override
public String something() {
return "xyz";
}
}
Test class
public class TestClass extends SpringTest {
#Autowired
#Qualifier("extendedTestService")
private ExtendedTestServiceMock testService;
public void testMethod(){
......
}
}
Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [TestService] is defined: expected single matching bean but found 2: ExtendedTestServiceMock,testService
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:865) ~[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:770) ~[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:489) ~[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
... 91 common frames omitted
How to resolve it?
You haven't defined a bean of type ExtendedTestService.
You have only defined a bean of type ExtendedTestServiceMock.
Try this:
#Autowired
#Qualifier("extendedTestService")
private TestService testService;
The solution is use a #service anotation, you should inject the service like this:
#Autowired
private TestService testService;
And then you can use the methods of TestService
Related
I have a Service class that has a generic type and a setController method that is based on the same generic type. the generic type of the servic object is only known at the time of declaration.
The problem is now when i define a ControllerImpl where the generic type is defined the #Autowired method of setController does not use that component.
Has somebody an idea how to fix it and keep the ServiceImpl generic. (it would work when i define the typ in ServiceImpl as well).
The following example show the problem i'm facing with:
#SpringBootTest
#ActiveProfiles("local")
public class AccessTest {
#Autowired
private ServiceA<BeanA> service;
#Test
void test(){
Assertions.assertNotNull(service.controller);
}
interface ValueGetter{
}
static class BeanA implements ValueGetter{
}
static class AbstractService<B extends ValueGetter>{
Controller<B> controller;
#Autowired
void setController(#Nullable Controller<B> controller){
this.controller = controller;
}
}
interface Controller<B extends ValueGetter>{
void doSomething(B value);
}
//not inner class
#Service
public class ServiceA<B extends AccessTest.ValueGetter> extends AccessTest.AbstractService<B> {
}
//not inner class
#Component
public class ControllerImpl implements AccessTest.Controller<AccessTest.BeanA> {
#Override
public void doSomething(final AccessTest.BeanA value) {
}
}
}
In my Spring Boot 2.0.2 application I am trying to inject a component herited from abstract class which implements an interface and it doesn't work.
Code :
Component Abstract : (Do I need to put #Component ?)
package app.project.service;
#Component
public abstract class AbstractStepService implements IStepService {
protected final void addTask() {
...
}
#Override
public StepDataDto launch() throws StepException {
...
}
}
Interface :
package app.project.service;
public interface IStepService {
StepDataDto launch() throws StepException;
}
package app.project.service;
Component :
#Component
public class CStepServiceImpl extends AbstractStepService implements IStepService {
#PostConstruct
private void defineTasks() {
}
}
package app.project.service;
Junit Test :
#RunWith(SpringRunner.class)
#SpringBootTest
public class CStepServiceTest {
#Autowired
#Qualifier("cStepServiceImpl")
private IStepService service;
}
package app.project;
Application :
#SpringBootApplication
#ComponentScan(basePackages ={"app.project.service"})
public class MyApplication {}
Error message when launching my Junit test :
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'app.project.service.IStepService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true), #org.springframework.beans.factory.annotation.Qualifier(value=cStepServiceImpl)}
Any idea ?
Thanks
Change your declaration like this
#Autowired
#Qualifier("CStepServiceImpl")
private IStepService service;
or
#Autowired
private IStepService CStepServiceImpl;
That should work. The bean name created automatically by spring has CStepServiceImpl name.
You can also name your bean like this
#Component(value = "myName")
public class CStepServiceImpl extends AbstractStepService implements IStepService {
}
and use myName during Autowiring.
This super class DAO:
public class CrudDAO{
}
This child class:
#Repository
public class JnsTimeDao extends CrudDAO {
}
#Repository
public class BatchDAO extends CrudDAO {
}
this super service class
#Transactional(readOnly = true)
public abstract class CrudService<D extends CrudDAO> {
#Autowired
protected D dao;
}
startup error:
org.springframework.beans.factory.NoUniqueBeanDefinitionException: No
qualifying bean of type [com.gp.dao.CrudDAO] is defined: expected
single matching bean but found 2: batchDAO,jnsTimeDao
There are 2 beans of type CrudDAO. So, Spring won't be able to understand which bean to inject. Can be solved as follows
#Repository("jnsTimeDao")
public class JnsTimeDao extends CrudDAO {
}
#Repository("batchDao")
public class BatchDAO extends CrudDAO {
}
While injecting use #Qualifier
#Transactional(readOnly = true)
public abstract class CrudService<D extends CrudDAO> {
#Autowired
#Qualifier("batchDao")
protected D dao;
}
I have a spring boot 2.0.0 M2 application who run well.
I use autowired on constructor
#RequestMapping(value = "/rest")
#RestController
public class AddressRestController extends BaseController{
private final AddressService AddressService;
#Autowired
public AddressRestController(final AddressService AddressService) {
this.AddressService = AddressService;
}
...
}
#Service
public class AddressServiceImpl extends BaseService implements AddressService {
#Autowired
public AddressServiceImpl(final AddressRepository AddressRepository) {
this.AddressRepository = AddressRepository;
}
private final AddressRepository AddressRepository;
...
}
public interface AddressRepository extends JpaRepository<Address, Integer>, AddressRepositoryCustom {
}
#Repository
public class AddressRepositoryImpl extends SimpleJpaRepository implements AddressRepositoryCustom {
#PersistenceContext
private EntityManager em;
#Autowired
public AddressRepositoryImpl(EntityManager em) {
super(Address.class, em);
}
...
}
When i try to run a basic test
#RunWith(SpringJUnit4ClassRunner.class)
public class AddressServiceTest {
#Autowired
private AddressService service;
#MockBean
private AddressRepository restTemplate;
#Test
public void getAddress(){
MockitoAnnotations.initMocks(this);
Pageable page = PageRequest.of(0, 20);
Page<Address> pageAdr = mock(Page.class);
given(this.restTemplate.findAll(page)).willReturn(pageAdr);
Page<AddressDto> pageDto = service.getAddress(page);
}
}
I get this error
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name
'com.sonos.arcor.service.AddressServiceTest': Unsatisfied dependency
expressed through field 'service'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type ''com.sonos.arcor.service.AddressService'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
I don't understand why i get this error.
You need to annotate the test with SpringBootTest so that spring initialize an application context
https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-testing.html#boot-features-testing-spring-boot-applications
#SpringBootTest
#RunWith(SpringJUnit4ClassRunner.class)
public class AddressServiceTest {
// the remaining test
}
Also you do not need MockitoAnnotations.initMocks(this);
Spring takes care of the mock handling
When [#MockBean is]used on a field, the instance of the created mock will also be
injected. Mock beans are automatically reset after each test method
see Mocking and spying beans
I'm having a Spring boot application in which based on a variable, I need to call corresponding implementation classes of an interface. This is what I have right now:
public interface Parent{
public void call();
}
public class ABC implements Parent{
public void call(){
System.out.println("Called ABC");
}
}
public class XYZ implements Parent{
public void call(){
System.out.println("Called XYZ");
}
}
#Service("caller")
public class Caller{
#Autowired
protected OrderInfoRepository orderInfoRepository;
AnnotationConfigApplicationContext context;
public Caller(){
context = new AnnotationConfigApplicationContext(Config.class);
}
public void callMethod(String param){
Parent p = (Parent) context.getBean(param+"_Caller");
p.call();
}
}
#Configuration
public class Config{
#Bean(name="ABC_Caller")
public Parent getABC(){
return new ABC();
}
#Bean(name="XYZ_Caller")
public Parent getXYZ(){
return new XYZ();
}
}
#Repository
public interface MyRepo extends Repository<MyDAO, Long> {
// ....
}
Basically what I want to do is, based on the param passed to Caller.callMethod(), I want to add "_Caller" to the param, and call the corresponding implementation class. So, I'm defining a #Configuration class, where I define which implementation class to return. And then using the AnnotationConfigApplicationContext, I get the corresponding bean. This works fine.
The problem I'm having is, when I try to Autowire anything in the implementation classes, I get a NoSuchBeanDefinitionException. For instance, when I autowire in the implementation class ABC
public class ABC implements Parent{
#Autowired
MyRepo myRepo;
public void call(){
System.out.println("Called ABC");
}
}
I get Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.persistence.repositories.MyRepo] when I try to start the application. However, when I do the Autowiring in the Caller class instead, it works fine. I had asked a similar question a while back, but was not able to resolve it. Any ideas?