Hi all,
I'd like to inject SLF4J Logger with Guice, but I have some problem.
Seeing https://code.google.com/p/google-guice/wiki/CustomInjections I have
written my TypeListener and my MembersInjector, but all works well only for
object that are instantiated from Guice.
I mean, if the object that require logger injection is directly create by
Guice then Guice correctly uses TypeListener ad MembersInjection to inject
the instance.
Else if the object only use Guice but for I provide my own code to
instantiate it, Guice skips the injection of the logger instance.
What I've seen is that Guice only take care of Class that are binded in
some Module or that declare some @inject annotation, but in my case not all
class are managed by Guice.
I'm integrating Guice into App Engine applications that uses Jersey to
implement REST WS. All my controller are instantiated by Jersey and not by
Guice, so in those classes my custom injection doesn't work.
Here it is my code:
*public class* JerseyGuiceServletContextListener
*extends*GuiceServletContextListener {
@Override
*protected* Injector getInjector() {
List<AbstractModule> moduleList;
* //do some classpath scanning to find modules an add all to
moduleList;*
moduleList.add(new GuiceJerseryServletModule());
*return* Guice.createInjector(moduleList);
}
*private* *class* GuiceJerseryServletModule *extends* JerseyServletModule {
@Override
*protected* *void* configureServlets() {
*final* Map<String, String> parametersMap =
*new*ImmutableMap.Builder<String, String>()
*//put some Jersey config parameters*
.build();
*this*.serveRegex(JERSEY_BASE_PATH).with(GuiceContainer.class,
parametersMap);
}
}
}
So now all my controllers aren't create by Guice but by Jersey, so if I ask
for Logger injection (with my custom annotation) into one of my controller,
Guice doesn't inject it. If I explicit bind my controller into
GuiceJerseryServletModule (with *this*.bind(MyController.class)) Guice
inject the Logger.
Instead, if I use standard Logger injection, that use java.util.Logger
class and using @Inject annotation, even if my controller are instantiated
by Jersey, all works well.
So, there's a way to inject a logger (different from java.util.Logger) even
if Guice doesn't take care of object creation?
I mean, I know that I could simply bind Logger class, using Providers...
But in that manner I can't assign the correct name to the Logger...
So I would like to:
1) Inject SLF4J Logger into object that aren't instantiated by Guice
2) Inject a Logger instance that have the correct name.
Thanks to all!
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