I am running a Micronaut CLI application via Picocli runner wanted to use applicationContext for injecting/getting the bean during application execution.
#HttpRetryable
#Client("SERVICE_ID")
interface TestHttpClient {
}
#Inject
lateinit var applicationContext: ApplicationContext
private class AuthenticationFilter() : HttpClientFilter {
// calling appcontext here
println("appContext is Running " + appContext.isRunning)
}
But getting this error on the execution
kotlin.UninitializedPropertyAccessException: lateinit property applicationContext has not been initialized```
How this can be fixed ?
The property needs to be in the AuthenticationFilter class. That class should be annotated with jakarta.inject.Singleton and should not be private
Related
I have a main activity as below:
#AndroidEntryPoint
class MainActivity : BaseActivity() {
#Inject
lateinit var configuration: Configuration
...
}
And a module defined like:
#Module
#InstallIn(SingletonComponent::class)
class AppModules {
#Singleton
#Provides
fun bindDeviceConfig(): Configuration {
return Configuration()
}
}
When I try running this it gives an error:
lateinit property configuration has not been initialized
I've looked at the documentation and can't seem to get my head around why I'm getting this issue. Does anyone know why?
After upgrading Quarkus from 1.6.1.Final to 2.5.Final the following #Inject fails inside javax.ws.rs.core.Application subclass:
#ApplicationScoped
public class MyBean {
public String foo() {
retun "bar";
}
}
#ApplicationPath("/")
public class MyApplication extends Application {
#Inject
MyBean myBean;
#Override
public Set<Class<?>> getClasses() {
myBean.foo(); // Causes NPE on Quarkus 2.5.Final, worked well with 1.6.1.Final
}
}
I tried with CDI.current().select(MyBean.class).get() but got Unable to locate CDIProvider.
Any other workaround I can try? Thanks.
#Inject in JAX-RS Application classes has been since disallowed. I was able to solve my issue (registering resource classes by config) using #IfBuildProperty annotation.
i have created sigleton session bean which keeps one connection to my mongo database. It works well in jax-rs class when using #EJB annotation - after controller is contructed and bean is injected it calls init method anotated with #PostConstruct.
Then i created similar class, which is implementing SecurityContext. I used same pattern as in controller, but it is not working properly. init() method is never called and EJB instance is always null.
So is there a way to inject EJB to my SecurityContext implemetation ? it works well unless i try to inject and use MongoConnection
my singleton session bean I use to connect mongo database:
#Singleton
#Startup
public class MongoConnection {
#PostConstruct
public void init() {
// initialize properties
}
I use it in JAX-RS controller. it works here, also in classes inherited from EntityController.
Produces(MediaType.APPLICATION_JSON)
public class EntityController extends Application {
#Context
private UriInfo context;
**#EJB
protected MongoConnection connection;**
public EntityController() {
#PostConstruct
void init() {
...
connection.getMongo();
connection.getDatabaseName();
...
}
}
I implemented my own security context, which is looking for loged user roles in mongo database.
public class MongoSecurityContext implements SecurityContext {
**#EJB
private MongoConnection connection;**
public MongoSecurityContext() {
}
#PostConstruct
void init() {
...
connection.getMongo();
connection.getDatabaseName();
...
}
public MongoSecurityContext(ContainerRequestContext requestContext) {
token = requestContext.getHeaderString("token");
}
#Override
public boolean isUserInRole(String roleName) {
//**connection is allways null**, so it returns false;
if (connection == null)
return false;
}
}
EDIT:
I forget, i also have this warning in glassfish 4 console:
A provider extremeteacher.mongo.connection.MongoConnectionEjb registered in SERVER runtime does not implement any provider interfaces applicable in the SERVER runtime. Due to constraint configuration problems the provider extremeteacher.mongo.connection.MongoConnectionEjb will be ignored
EDIT2:
#Provider
#Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
#Override
public void filter(ContainerRequestContext requestContext) {
requestContext.setSecurityContext(new MongoSecurityContext(requestContext)) ;
}
}
Injection does not work for objects created with new because the container is never given control to perform the injection. I recommend moving the #EJB to the filter and passing it to the MongoSecurityContext constructor.
I am using Arquillian to inject the dependencies for my tests. It works OK if I inject the beans directly to my test class, but if the beans have dependencies of their own tht have to be injected, those dependencies do not get injected.
For example: the FacLptConfiguration bean gets imported correctly into my Test Class, but it does not get injected into the CfdFileCreator bean. I injected FacLptConfigurtion to the test class just to confirm that the injection works, but the user of this class is CfdFileCreator.
#RunWith(Arquillian.class)
public class CfdFileCreatorArquillianTest {
#Deployment
public static WebArchive createDepolyment() {
return ShrinkWrap.create(WebArchive.class)
.addClass(FacLptConfiguration.class)
.addClass(InterimFileCreator.class)
.addClass(CfdFileCreator.class)
.addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml")
.addAsWebInfResource(new File("C:/aLearn/FacLpt/web/WEB-INF/env-entries.properties"));
}
public static String TEST_FOLDER = "C:/aLearn/FacLpt/src/test/testdata/pruebas/";
#Inject
private FacLptConfiguration facLptConfiguration;
#Inject
private CfdFileCreator cfdFileCreator;
#Test
public void createCfd() {
System.out.println("in createCFD");
cfdFileCreator.createCFDFile();
}
}
These injections are not working:
#Singleton
public class CfdFileCreator {
#Inject
private InterimFileCreator interimFileCreator;
#Inject
private FacLptConfiguration facLptConfiguration;
I think your problem is the location of the beans.xml. For a web archive it should be WEB-INF/beans.xml. Use:
addAsWebInfResource(EmptyAsset.INSTANCE, ArchivePaths.create("beans.xml"))
See also https://community.jboss.org/thread/175404
Here is my bean that is trying to inject a singleton bean InformationService :
#Path("/information/{name}")
#Stateless (name="InformationResource")
public class InformationResource {
#EJB
private InformationService appService;
#GET
#Produces(MediaType.APPLICATION_XML)
public Information getInfo(#PathParam("name") String name){
return appService.getMap().get(name);
}
#PUT
#POST
#Consumes(MediaType.APPLICATION_XML)
public Information putInfo(#PathParam("name") String name, Information info){
return appService.getMap().put(name,info);
}
#DELETE
public void deleteInfo(#PathParam("name") String name){
appService.getMap().remove(name);
}
}
This is the InformationService class
#Singleton
public class InformationService {
private Map<String,Information> map;
#PostConstruct
public void init(){
map = new HashMap<String,Information>();
map.put("daud", new Information("B.Tech","Lucknow"));
map.put("anuragh", new Information("M.Sc","Delhi"));
}
public Map<String,Information> getMap(){
return map;
}
}
Its part of a very simple JAX-RS implementation and I am deploying as war in JBoss 6.1 Final. The problem is that InformationService throwing a NullPointerException when I make the proper get request. If I initialize appService explicitly, everything works fine. Why is #EJB annotation not working ?
Are you using Jersey as REST implementation? If so, EJB injection is not supported out of the box.
This link provides more information on this and also a solution.
Check that your #Singleton is javax.ejb.Singleton.
Any other exceptions before NPE ?