Java EE using a producer method yields 'WELD-001408 Unsatisfied dependencies ..' exception
cdi, glassfish, jakarta-ee, netbeans, weld2
Solution
You are importing `@Produces` from `javax.ws.rs` (used by the JAX-RS runtime), instead from `javax.enterprise.inject`.
Problem
Hy there, I am absolutely fresh to Java EE and CDI. I try to set up a test-project in order to do my first steps with JAX-RS and CDI. I have CDI enabled by providing a beans.xml. As long as I am testing, I use the bean-discovery-mode="all" element. CDI seems to work fine, as I can successfully inject a BeanManager into my test-resource and I can output all the beans it discovered. I try to inject a class provided by a producer method. Netbeans shows me a warning for the provideMe field: No enabled eligible for injection beans are found When I deploy the application to Glassfish, I get the weld exception: ``` WELD-001408 Unsatisfied dependencies for type [ProvideMeInterface] with qualifiers [@Default] at injection point [[BackedAnnotatedField] @Inject private com.test.rest.DataImport.provideMe] ``` Here are my classes for this little test: Interface: ``` package com.test.orm; public interface ProvideMeInterface { int getCount(); } ``` Implementation: ``` package com.test.orm; public class ProvideMeImpl implements ProvideMeInterface { int cnt; ProvideMeImpl(int cnt) { this.cnt = cnt; } @Override public int getCount() { return cnt; } } ``` Producer: ``` package com.test.orm; import javax.enterprise.context.ApplicationScoped; import javax.ws.rs.Produces; public class ProvideMeProvider { @Produces @ApplicationScoped public ProvideMeInterface produceFactory() { return new ProvideMeImpl(111); } } ``` Resource: ``` package com.test.rest; import ... ... @Path("rest/import") public class DataImport { private final Logger logger = LoggerFactory.getLogger(getClass()); @Inject private ProvideMeInterface provideMe; @Inject BeanManager beanManager; public DataImport() {} @GET @Produces("text/html") public String getHtml() { return "<html><body><h1>IMPORT Resource: " + provideMe.getCount() + " </body></h1></html>"; } } ``` When I start the application without the "ProvideMe" test and I print print out all the discovered beans, the ProvideMeProvider class is discovered, as also 'ProvideMe': ``` ... INFO: 2014-07-14 14:09:31,040 [DEBUG] com.test.rest.DataImport - Bean: com.test.orm.ProvideMeProvider INFO: 2014-07-14 14:09:31,041 [DEBUG] com.test.rest.DataImport - Bean: com.test.orm.ProvideMe ... ``` Questions: 1) Why do I get the "Unsatisfied dependencies.." error when trying to inject the only implementation for the interface? 2) Are all necessary classes discovered here? 3) If not, what do I need to do so they get discovered? 4) What is the "ProvideMe" class that it discovers? (I've got ProvideMeImpl, ProvideMeInterface and ProvideMeProvider, but no class ProvideMe) I am using: Glassfish 4.0 (build 89) (Java EE 7 Web)/NetBeans 8.0/maven 3.2.1/JDK 1.7