Can't start maven project. Autowire failed and creating DTO beans failed - spring

Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'grupaDTOToGrupa': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.service.GrupaService jwd.festival.support.GrupaDTOToGrupa.grupaService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaGrupaService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.repository.GrupaRepository jwd.festival.service.impl.JpaGrupaService.repository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'grupaRepository': Cannot create inner bean '(inner bean)#1cd201a8' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1cd201a8': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'igracDTOToIgrac': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.service.DrzavaService jwd.festival.support.IgracDTOToIgrac.drzavaService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaDrzavaService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.repository.DrzavaRepository jwd.festival.service.impl.JpaDrzavaService.repository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'drzavaRepository': Cannot create inner bean '(inner bean)#42b64ab8' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#42b64ab8': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'utakmicaDTOToUtakmica': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.service.UtakmicaService jwd.festival.support.UtakmicaDTOToUtakmica.utakmicaService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaUtakmicaService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private jwd.festival.repository.UtakmicaRepository jwd.festival.service.impl.JpaUtakmicaService.repository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'utakmicaRepository': Cannot create inner bean '(inner bean)#3f2ef586' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#3f2ef586': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
***grupaDTOToGrupa:
package jwd.festival.support;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import jwd.festival.model.Grupa;
import jwd.festival.service.GrupaService;
import jwd.festival.web.dto.GrupaDTO;
#Component
public class GrupaDTOToGrupa implements Converter<GrupaDTO, Grupa> {
#Autowired
private GrupaService grupaService;
#Override
public Grupa convert(GrupaDTO source) {
Grupa grupa;
if(source.getId() == null) {
grupa = new Grupa();
}else {
grupa = grupaService.findOne(source.getId());
if(grupa == null) {
throw new IllegalStateException("Triied to convert non existing
object. GrupaDTOToGrupa");
}
}
grupa.setId(source.getId());
grupa.setNaziv(source.getNaziv());
return grupa;
}
public List<Grupa> convert(List<GrupaDTO> grupe) {
List<Grupa> ret = new ArrayList<>();
for(GrupaDTO g : grupe) {
ret.add(convert(g));
}
return ret;
}
}
***igracDTOToIgrac:
package jwd.festival.support;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import jwd.festival.model.Igrac;
import jwd.festival.service.DrzavaService;
import jwd.festival.service.IgracService;
import jwd.festival.web.dto.IgracDTO;
#Component
public class IgracDTOToIgrac implements Converter<IgracDTO, Igrac> {
#Autowired
private DrzavaService drzavaService;
#Autowired
private IgracService igracService;
#Override
public Igrac convert(IgracDTO source) {
Igrac igrac;
if(source.getId() == null) {
igrac = new Igrac();
igrac.setDrzava(drzavaService.findOne(source.getDrzavaId()));
} else {
igrac = igracService.findOne(source.getId());
}
igrac.setDrzava(source.getDrzavaId());
igrac.setId(source.getId());
igrac.setIme(source.getIme());
igrac.setPrezime(source.getPrezime());
return igrac;
}
public List<Igrac> convert(List<IgracDTO> igraci) {
List<Igrac> ret = new ArrayList<>();
for(IgracDTO i : igraci) {
ret.add(convert(i));
}
return ret;
}
}
***utakmicaDTOToUtakmica:
package jwd.festival.support;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import jwd.festival.model.Utakmica;
import jwd.festival.service.UtakmicaService;
import jwd.festival.web.dto.UtakmicaDTO;
#Component
public class UtakmicaDTOToUtakmica implements Converter<UtakmicaDTO,
Utakmica> {
#Autowired
private UtakmicaService utakmicaService;
#Override
public Utakmica convert(UtakmicaDTO source) {
Utakmica utakmica;
if(source.getId() == null) {
utakmica = new Utakmica();
}else {
utakmica = utakmicaService.findOne(source.getId());
if(utakmica == null) {
throw new IllegalStateException("Tried to modify non existant
utakmica. UtakmicaDTOToUtakmica");
}
}
utakmica.setId(source.getId());
utakmica.setDrzavaDomacin(source.getDrzavaDomacin());
utakmica.setDrzavaGost(source.getDrzavaGost());
utakmica.setRezultat(source.getRezultat());
return utakmica;
}
public List<Utakmica> convert(List<UtakmicaDTO> utakmice) {
List<Utakmica> ret = new ArrayList<>();
for(UtakmicaDTO u : utakmice) {
ret.add(convert(u));
}
return ret;
}
}

Related

How to fix MongoTemplate --> MappingMongoConverter --> BeforeConvertCallback --> MongoTemplate circular dependency?

I am trying to create a custom Auditing callback in order to set the corresponding fields of my MongoDB documents.
This is my callback:
#Order(101)
#Component
#RequiredArgsConstructor
public class AuditingCallback implements BeforeConvertCallback<AuditingDocument<String>> {
private final AuditingConfiguration auditingConfiguration;
#Setter
#Autowired
private MongoTemplate mongoTemplate;
/**
* Entity callback method invoked before a domain object is converted to be persisted. Can return either the same or a
* modified instance of the domain object.
*
* #param entity the domain object to save.
* #param collection name of the collection.
* #return the domain object to be persisted.
*/
#Override
public AuditingDocument<String> onBeforeConvert(AuditingDocument<String> entity, String collection) {
System.out.println("Auditing Callback");
System.out.println(entity);
if(this.isNew(entity)){
System.out.println("Is new");
entity.setCreator(this.auditingConfiguration.getCurrentAuditor().orElse(null));
entity.setCreated(Instant.now());
}else{
System.out.println("Is not new");
// TODO
// Retrieve existing creator, created
Class<AuditingDocument<String>> clazz = (Class<AuditingDocument<String>>) entity.getClass();
AuditingDocument<String> existingEntity = this.mongoTemplate.<AuditingDocument<String>>findById(entity.getId(), clazz);
System.out.println("Existing Entity:");
System.out.println(existingEntity);
entity.setModifier(this.auditingConfiguration.getCurrentAuditor().orElse(null));
entity.setModified(Instant.now());
}
return entity;
}
private boolean isNew(AuditingDocument<String> entity){
return StringUtils.isBlank(entity.getId());
}
}
Now I need to find the existing entity from the DB, to keep the existing creator and created fields, hence the MongoTemplate field.
This results in a circular dependency:
┌─────┐
| mongoTemplate defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]
↑ ↓
| mappingMongoConverter defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]
↑ ↓
| auditingCallback (field private org.springframework.data.mongodb.core.MongoOperations org.myproject.configuration.database.auditing.callbacks.AuditingCallback.mongoOperations)
└─────┘
How can I break this circular dependency?
I also tried with MongoOperations but it is the same.
Note that I am already using the
allow-circular-references: true
property.
Is it not possible to load existing entities during MongoDB events callbacks?
Log 2
Cannot resolve reference to bean 'mongoTemplate' while setting bean property 'mongoOperations'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]: Unsatisfied dependency expressed through method 'mongoTemplate' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mappingMongoConverter' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'auditingCallback': Unsatisfied dependency expressed through field 'mongoTemplate'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mongoTemplate': Requested bean is currently in creation: Is there an unresolvable circular reference?
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]: Unsatisfied dependency expressed through method 'mongoTemplate' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mappingMongoConverter' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'auditingCallback': Unsatisfied dependency expressed through field 'mongoTemplate'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mongoTemplate': Requested bean is currently in creation: Is there an unresolvable circular reference?
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mappingMongoConverter' defined in class path resource [org/springframework/boot/autoconfigure/data/mongo/MongoDatabaseFactoryDependentConfiguration.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'auditingCallback': Unsatisfied dependency expressed through field 'mongoTemplate'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mongoTemplate': Requested bean is currently in creation: Is there an unresolvable circular reference?
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'auditingCallback': Unsatisfied dependency expressed through field 'mongoTemplate'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mongoTemplate': Requested bean is currently in creation: Is there an unresolvable circular reference?
Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mongoTemplate': Requested bean is currently in creation: Is there an unresolvable circular reference?

Spring Data: Mongo Repository can not be initialized

I'm getting this strange error message when I start my spring boot service:
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property storeMpi found for type Patient!
Service can't be started since this exception is raised.
My code is very straight:
public interface PatientRepository
extends MongoRepository<Patient, String>,
QuerydslPredicateExecutor<Patient>,
MPIPatientRepository
{
}
public interface MPIPatientRepository {
Patient storeMpi(Patient patient);
}
You can see, that storeMpi is a method, not an expected field of my Patient entity.
Implementation is straight as well:
#Repository
#RequiredArgsConstructor
public class MPIPatientRepository implements cat.gencat.catsalut.hes.mpi.repository.MPIPatientRepository {
private final MongoTemplate mongoTemplate;
/**
* {#inheritDoc}
*/
#Override
public Patient storeMpi(Patient patient) {
return this.mongoTemplate.save(patient);
}
I don't quite figure out what's wrong.
Formatted root CausedBy is:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ca.uhn.fhir.spring.boot.autoconfigure.FhirAutoConfiguration$FhirRestfulServerConfiguration': Bean instantiation via constructor failed;
nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [ca.uhn.fhir.spring.boot.autoconfigure.FhirAutoConfiguration$FhirRestfulServerConfiguration$$EnhancerBySpringCGLIB$$5fe4b535]: Constructor threw exception;
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'patientResourceProvider' defined in file [/home/jeusdi/projects/salut/mpi/hes-mpi-fhir-mongodb/target/classes/cat/gencat/catsalut/hes/mpi/providers/PatientResourceProvider.class]: Unsatisfied dependency expressed through constructor parameter 0;
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'patientService' defined in file [/home/jeusdi/projects/salut/mpi/hes-mpi-fhir-mongodb/target/classes/cat/gencat/catsalut/hes/mpi/service/PatientService.class]: Unsatisfied dependency expressed through constructor parameter 2;
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'patientRepository' defined in cat.gencat.catsalut.hes.mpi.repository.PatientRepository defined in #EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration: Invocation of init method failed;
nested exception is org.springframework.data.repository.query.QueryCreationException: Could not create query for public abstract cat.gencat.catsalut.hes.mpi.model.Patient cat.gencat.catsalut.hes.mpi.repository.MPIPatientRepository.storeMpi(cat.gencat.catsalut.hes.mpi.model.Patient)! Reason: No property storeMpi found for type Patient!;
nested exception is org.springframework.data.mapping.PropertyReferenceException: No property storeMpi found for type Patient!
Any ideas?

Junit in Spring Boot keeps failing

I have very simple SpringBoot Junit but it keeps failing.
#RunWith(SpringRunner.class)
//#SpringBootTest
#WebMvcTest(TokenServiceImpl.class)
public class TokenTest {
#Test
public void getOauthToken()
{
System.out.println( " done test");
}
my TokenServiceImpl class has
public class TokenServiceImpl implements TokenService{
public String getToken() throws RuntimeException{
return " Token returned" ;
}
I get the below error : -Snippet
2019-11-27 19:12:45.884 WARN 15864 --- [ main]
o.s.w.c.s.GenericWebApplicationContext : Exception encountered
during context initialization - cancelling refresh attempt:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'runApplication': Unsatisfied dependency
expressed through field 'job'; nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'job' defined in class path resource
[com/mycompany/project1/batch/configurations/BatchBDREntityConfig.class]:
Unsatisfied dependency expressed through method 'job' parameter 4;
nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'batchDBWriter': Unsatisfied dependency
expressed through field 'BDREntityRepository'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
'com.mycompany.project1.batch.repositories.BDREntityRepository'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
Field BDREntityRepository in
com.mycompany.project1.batch.services.BatchDBWriter required a bean of
type 'com.mycompany.project1.batch.repositories.BDREntityRepository'
that could not be found.
Consider defining a bean of type
'com.mycompany.project1.batch.repositories.BDREntityRepository' in
your configuration.
Caused by:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'runApplication': Unsatisfied dependency
expressed through field 'job'; nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'job' defined in class path resource
[com/mycompany/project1/batch/configurations/BatchBDREntityConfig.class]:
Unsatisfied dependency expressed through method 'job' parameter 4;
nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'batchDBWriter': Unsatisfied dependency
expressed through field 'BDREntityRepository'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
'com.mycompany.project1.batch.repositories.BDREntityRepository'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
Caused by:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'batchDBWriter': Unsatisfied dependency
expressed through field 'BDREntityRepository'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
'com.mycompany.project1.batch.repositories.BDREntityRepository'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
Caused by:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
'com.mycompany.project1.batch.repositories.BDREntityRepository'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
My main method has following
#SpringBootApplication
#ComponentScan(basePackages= {"com.mycompany.project1"})
public class RunApplication{
private static final Logger logger = Logger.getLogger(BatchController.class);
#Autowired
JobLauncher jobLauncher;
#Autowired
Job job;
/*
* jmxBean will get loaded when this managed bean is called from RMI, and it will fire batch execution
*/
public static void main(String[] args){
ApplicationContext app = SpringApplication.run(RunApplication.class, args);
logger.debug("Batch Application has been started...");
BatchController controller = app.getBean(BatchController.class);
//Start batch process when application starts or restart, its optional call and can be commented out
//as we have JMX to expose load method on demand
//BatchController batch = new BatchController();
controller.startBatchProessFromMain();
}
}
#Component
public class BatchDBWriter implements ItemWriter<BDREntity> {
private static final Logger logger = Logger.getLogger(BatchDBWriter.class);
#Autowired
private BDREntityRepository bDREntityRepository;
/*
* this method call the JPArepository's saveAll
* function and saves all the list of bdrEntitiesat a time.
*/
#Override
public void write(List<? extends BDREntity> bdrEntities) throws Exception {
bDREntityRepository.saveAll(bdrEntities);
}
}
How can i fix my Junit ?
You are using #WebMvcTest that is a test-slice annotation. It's specifically intended for testing the WebMvc-related components in your application and is a form of integration test.
You've said in the comments that you're not trying to integration test your application. In that case, you should not be using #SpringBootTest or any of the other #…Test annotations that are provided by Spring Boot.
Assuming that your goal is to unit test TokenServiceImpl, I'd expect your test class to look something like this:
public class TokenTest {
private final TokenServiceImpl tokenService = new TokenServiceImpl();
#Test
public void getOauthToken() {
String token = this.tokenService.getToken();
// Assertions to check the token go here
}
}

Spring BeanPostProcessor BeanCreationException runtime error

I'm unable to launch hello world app with Spring 4.3.6 Please, help, I don't even know what may be wrong.
Without bean messageService and aop section everything works. But I got this error with config as it is
WARNING: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'printer' defined in class path resource [config.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#c273d3' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c273d3': Cannot create inner bean '(inner bean)#1423665' of type [org.springframework.aop.config.MethodLocatingFactoryBean] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1423665': Initialization of bean failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [MessagePrinterService] for bean with name 'messageService' defined in class path resource [config.xml]; nested exception is java.lang.ClassNotFoundException: MessagePrinterService
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [MessagePrinterService] for bean with name 'messageService' defined in class path resource [config.xml]; nested exception is java.lang.ClassNotFoundException: MessagePrinterService
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'printer' defined in class path resource [config.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Cannot create inner bean '(inner bean)#c273d3' of type [org.springframework.aop.aspectj.AspectJMethodBeforeAdvice] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c273d3': Cannot create inner bean '(inner bean)#1423665' of type [org.springframework.aop.config.MethodLocatingFactoryBean] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1423665': Initialization of bean failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [MessagePrinterService] for bean with name 'messageService' defined in class path resource [config.xml]; nested exception is java.lang.ClassNotFoundException: MessagePrinterService
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [MessagePrinterService] for bean with name 'messageService' defined in class path resource [config.xml]; nested exception is java.lang.ClassNotFoundException: MessagePrinterService
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:479)
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)
Xml config:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="printer" class="helloword.MessagePrinter">
<constructor-arg ref="message"></constructor-arg>
</bean>
<bean id="message" class="helloword.HelloWordMessage">
<constructor-arg value="Hello Spring World!"></constructor-arg>
</bean>
<bean id="messageService" class="MessagePrinterService">
</bean>
<aop:config>
<aop:aspect ref="messageService">
<aop:pointcut id="print" expression="execution(* *.print(..))"/>
<aop:before pointcut-ref="print" method="preMsg"/>
<aop:after pointcut-ref="print" method="postMsg"/>
</aop:aspect>
</aop:config>
</beans>
Classes, all is separate files:
public class HelloWordMessage implements Message{
private String msg;
public HelloWordMessage(String s) {
msg = s;
}
#Override
public String getText() {
return msg;
}
}
public class MessagePrinter implements Printer {
private Message msg;
public MessagePrinter(Message m){
msg = m;
}
#Override
public void print(){
System.out.println(msg.getText());
}
}
public class MessagePrinterService {
public MessagePrinterService(){
System.out.println("MessagePrinterService created");
}
public void preMsg(){
System.out.println("Message alert!:");
}
public void postMsg(){
System.out.println("End of message.");
}
}
public class Aplication {
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("config.xml");
MessagePrinter printer = context.getBean(MessagePrinter.class);
printer.print();
context.close();
}
}
java.lang.ClassNotFoundException: MessagePrinterService
Spring cannot load the class MessagePrinterService.
Put it into a specific package and change the configuration accordingly. It should work then.

Spring error when trying to manage several classes that share a common base class?

Im currently using Spring 3.0.x ..
Im wondering what's wrong with these structures,
where i would like to manage the subclasses but not the parent classes.
I have 2 child DAOs extending the BaseDAO :
public abstract class BaseDAO<K, E> {
....
}
#Repository
public class UserDAO extends BaseDAO<String, User> {
....
}
#Repository
public class ApprovalDAO extends BaseDAO<String, Approval> {
....
}
And i have the services like this, with hierarchies like this :
public abstract class BaseService<K, E extends BaseEntity, D extends BaseDAO<K, E>> {
#Autowired
protected D dao;
....
}
public abstract class BaseCommonService<K, E extends BaseCommonEntity, D extends BaseDAO<K, E>> extends BaseService<K,E,D> {
....
}
#Service
public class UserService extends BaseCommonService<String, User, UserDAO> {
....
}
When trying to inject the userservice object to my application, it throws error like this :
Exception in thread "main"
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name
'testEntities': Injection of autowired
dependencies failed; nested exception
is
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: private
com.primetech.module.common.service.UserService
com.primetech.module.purchase.app.TestEntities.userService;
nested exception is
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name
'userService': Injection of autowired
dependencies failed; nested exception
is
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: protected
com.primetech.core.parent.BaseDAO
com.primetech.core.parent.BaseService.dao;
nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException:
No unique bean of type
[com.primetech.core.parent.BaseDAO] is
defined: expected single matching bean
but found 2: [userDAO, approvalDAO]
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1064)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:574)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at
org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139)
at
org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:93)
at
com.primetech.module.purchase.app.TestEntities.main(TestEntities.java:81)
Caused by:
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: private
com.primetech.module.common.service.UserService
com.primetech.module.purchase.app.TestEntities.userService;
nested exception is
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name
'userService': Injection of autowired
dependencies failed; nested exception
is
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: protected
com.primetech.core.parent.BaseDAO
com.primetech.core.parent.BaseService.dao;
nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException:
No unique bean of type
[com.primetech.core.parent.BaseDAO] is
defined: expected single matching bean
but found 2: [userDAO, approvalDAO]
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:507)
at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:283)
... 13 more Caused by:
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name
'userService': Injection of autowired
dependencies failed; nested exception
is
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: protected
com.primetech.core.parent.BaseDAO
com.primetech.core.parent.BaseService.dao;
nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException:
No unique bean of type
[com.primetech.core.parent.BaseDAO] is
defined: expected single matching bean
but found 2: [userDAO, approvalDAO]
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1064)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:838)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:780)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:697)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
... 15 more Caused by:
org.springframework.beans.factory.BeanCreationException:
Could not autowire field: protected
com.primetech.core.parent.BaseDAO
com.primetech.core.parent.BaseService.dao;
nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException:
No unique bean of type
[com.primetech.core.parent.BaseDAO] is
defined: expected single matching bean
but found 2: [userDAO, approvalDAO]
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:507)
at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:283)
... 26 more Caused by:
org.springframework.beans.factory.NoSuchBeanDefinitionException:
No unique bean of type
[com.primetech.core.parent.BaseDAO] is
defined: expected single matching bean
but found 2: [userDAO, approvalDAO]
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:790)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:697)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
... 28 more
I tried changing this section, removing the #Repository annotation :
#Repository
public class ApprovalDAO extends BaseDAO<String, Approval> {
....
}
into this :
public class ApprovalDAO extends BaseDAO<String, Approval> {
....
}
And things run without error, but then, the approvalDAO isnt managed by the spring anymore, and cannot be injected later by #Autowired
Any suggestions on how i can solve this problem ?
Autowiring works only if there is exactly one implementation bean of the specific type present in the Spring Context. I'd assume that using the generic D extends BaseDao leads to a situation where Spring is trying to autowire instances of BaseDao instead of UserDao and ApprovalDao. Because you both UserDao and ApprovalDao implement BaseDao, Spring context contains multiple implementations of BaseDao and cannot decide which one should be used.
Spring is trying to tell this to you in the stack trace
org.springframework.beans.factory.NoSuchBeanDefinitionException:
__No unique bean of type__ [com.primetech.core.parent.BaseDAO] is defined:
expected single matching bean but found 2: [userDAO, approvalDAO]
You could try to test this by defining the dao in the concrete service using the actual dao type e.g.
public abstract class BaseService<K, E extends BaseEntity, D extends BaseDAO<K, E>> {
private final D dao;
protected BaseService(D dao) {
this.dao = dao;
}
}
public class UserService extends BaseService<K, User, UserDao<K, User>> {
#Autowired
public UserService(UserDao dao) {
super(dao);
}
}
I'd continue by defining interfaces for UserDao and ApprovalDao so that dependencies are on interfaces and not implementations. The daos may still have a common super interface and their implementations may be based on the BaseDao to avoid unnecessary duplication.
In the example I've defined the injected Dao in the constructor because I assume that the same dao instance should be used throughout the lifetime of the service and the service cannot exist without the dao set. In my opinion, a constructor argument communicates this contract better. Furthermore it might make the class a bit more testable and maintainable.

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