I have tried dependency injection example from here https://dzone.com/articles/guicing-play-framework
Below is my code Controller:
public class TestController extends Controller{
@Inject
private Testing test;
public Result result() {
test.tt();
return ok();
}
}
Service Interface code:
public interface Testing {
public String tt();
}
ServiceImpl code:
public class Testingimpl implements Testing{
@Override
public String tt() {
return "test";
}
}
I am getting this error
CreationException: Unable to create injector
If I do this, this works.
public class TestController extends Controller{
@Inject
private TestingImpl test;
public Result result() {
test.tt();
return ok();
}
}
How to resolve this?
You forgot to bind interface to your implementation. If you have one implementation change your interface like:
import com.google.inject.ImplementedBy;
@ImplementedBy(Testingimpl.class)
public interface Testing {
public String tt();
}
For more complex solution you can use programmatic bindings: https://www.playframework.com/documentation/2.7.x/JavaDependencyInjection#Programmatic-bindings
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