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Je veux changer comment mon application accède cassandra db. J'utilisais des données de printemps pour cassandra mais comme il ne supporte pas UDT et d'autres choses, j'ai décidé d'utiliser un pilote datastax avec un pattern DAO.Le printemps ne pas initialiser les haricots
Mais j'ai quelques problèmes, psring n'initialise pas les beans pour le pilote datastax et je ne sais pas où est l'erreur.
ceci est l'erreur:
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ro.automotive.app.core.DAO.interfaces.BaseDAO ro.automotive.app.core.service.BaseServiceImpl.baseDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'usersDAOImpl' defined in file [E:\Proiecte Intellij\Stefan\automotive\target\ROOT\WEB-INF\classes\ro\automotive\app\core\DAO\UsersDAOImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [ro.automotive.app.core.DAO.UsersDAOImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 72 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'usersDAOImpl' defined in file [E:\Proiecte Intellij\Stefan\automotive\target\ROOT\WEB-INF\classes\ro\automotive\app\core\DAO\UsersDAOImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [ro.automotive.app.core.DAO.UsersDAOImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
... 74 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [ro.automotive.app.core.DAO.UsersDAOImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098)
... 85 more
Caused by: java.lang.NullPointerException
at ro.automotive.app.core.DAO.BaseDAOImpl.<init>(BaseDAOImpl.java:29)
at ro.automotive.app.core.DAO.UsersDAOImpl.<init>(UsersDAOImpl.java:13)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
... 87 more
Voici mes fichiers de configuration:
@Configuration
@EnableWebMvc
@ComponentScan({
"ro.automotive.app.core.controller",
"ro.automotive.app.admin.controller",
"ro.automotive.app.autoService.controller",
"ro.automotive.app.carPartsSupplier.controller",
"ro.automotive.app.core.service",
"ro.automotive.app.core.DAO"
})
@Import({CassandraConfig.class, SpringSecurityConfig.class})
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/res/**/**.js").addResourceLocations("/WEB-RES/js/");
registry.addResourceHandler("/res/**/**.css").addResourceLocations("/WEB-RES/css/");
registry.addResourceHandler("/res/img/**/**/**.png").addResourceLocations("/WEB-RES/img/");
registry.addResourceHandler("/**/**.ico").addResourceLocations("/WEB-RES/img/favicon.ico");
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
@Bean
public ViewResolver viewResolver(ContentNegotiationManager manager) {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/views/");
resolver.setSuffix(".jsp");
return resolver;
}
}
config Cassandra:
@Configuration
public class CassandraConfig{
@Bean
public Cluster cluster(){
PoolingOptions poolingOptions = new PoolingOptions();
Cluster cluster = Cluster.builder()
.withClusterName("develop")
.addContactPoint("localhost")
.withPort(9042)
.build();
return cluster;
}
@Bean
public MappingManager mappingManager() throws Exception {
MappingManager mappingManager = new MappingManager(session());
return mappingManager;
}
@Bean
public Session session() throws Exception {
Session session = cluster().connect("automotive");
return session;
}
}
Et BaseDAO où gestionnaire de cartographie est nulle:
public abstract class BaseDAOImpl<T> implements BaseDAO<T> {
protected final Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
protected MappingManager manager;
protected Mapper<T> mapper;
public BaseDAOImpl(Class<T> clazz) {
mapper = manager.mapper(clazz);
}
@Override
public TableMetadata getTableMetadata() {
return mapper.getTableMetadata();
}
@Override
public Statement saveQuery(T entity) {
return mapper.saveQuery(entity);
}
@Override
public Statement saveQuery(T entity, Mapper.Option... options) {
return mapper.saveQuery(entity, options);
}
@Override
public void save(T entity) {
mapper.save(entity);
}
@Override
public void save(T entity, Mapper.Option... options) {
mapper.save(entity, options);
}
@Override
public ListenableFuture<Void> saveAsync(T entity) {
return mapper.saveAsync(entity);
}
@Override
public ListenableFuture<Void> saveAsync(T entity, Mapper.Option... options) {
return mapper.saveAsync(entity, options);
}
@Override
public Statement getQuery(Object... objects) {
return mapper.getQuery(objects);
}
@Override
public T get(Object... objects) {
return mapper.get(objects);
}
@Override
public ListenableFuture<T> getAsync(Object... objects) {
return mapper.getAsync(objects);
}
@Override
public Statement deleteQuery(T entity, Mapper.Option... options) {
return mapper.deleteQuery(entity, options);
}
@Override
public Statement deleteQuery(T entity) {
return mapper.deleteQuery(entity);
}
@Override
public Statement deleteQuery(Object... objects) {
return mapper.deleteQuery(objects);
}
@Override
public void delete(T entity) {
mapper.delete(entity);
}
@Override
public void delete(T entity, Mapper.Option... options) {
mapper.delete(entity, options);
}
@Override
public ListenableFuture<Void> deleteAsync(T entity) {
return mapper.deleteAsync(entity);
}
@Override
public ListenableFuture<Void> deleteAsync(T entity, Mapper.Option... options) {
return mapper.deleteAsync(entity, options);
}
@Override
public void delete(Object... objects) {
mapper.delete(objects);
}
@Override
public ListenableFuture<Void> deleteAsync(Object... objects) {
return mapper.deleteAsync(objects);
}
@Override
public Result<T> map(ResultSet resultSet) {
return mapper.map(resultSet);
}
@Override
public ListenableFuture<Result<T>> mapAsync(ResultSetFuture resultSetFuture) {
return mapper.mapAsync(resultSetFuture);
}
@Override
public void setDefaultSaveOptions(Mapper.Option... options) {
mapper.setDefaultSaveOptions(options);
}
@Override
public void resetDefaultSaveOptions() {
mapper.resetDefaultSaveOptions();
}
@Override
public void setDefaultGetOptions(Mapper.Option... options) {
mapper.setDefaultGetOptions(options);
}
@Override
public void resetDefaultGetOptions() {
mapper.resetDefaultGetOptions();
}
@Override
public void setDefaultDeleteOptions(Mapper.Option... options) {
mapper.setDefaultDeleteOptions(options);
}
@Override
public void resetDefaultDeleteOptions() {
mapper.resetDefaultDeleteOptions();
}
@Override
public T get(List objects) {
return mapper.get(objects.toArray());
}
@Override
public ListenableFuture<T> getAsync(List objects) {
return mapper.getAsync(objects.toArray());
}
}
Voici UserDAoImpl:
@Repository
public class UsersDAOImpl extends BaseDAOImpl<Users> implements UsersDAO {
private UsersDAO accessor;
public UsersDAOImpl() {
super(Users.class);
accessor = manager.createAccessor(UsersDAO.class);
}
@Override
public Users findByUsername(String username) {
return accessor.findByUsername(username);
}
}