jax rs - Resteasy and Google Guice: how to use multiple @ApplicationPath and resource with @Injection? -

i created project test dependency injection offered google guice in jax-rs resources, using resteasy.

my intentions are:

• use multiple @applicationpath versions of api. in each class annotated @applicationpath load set of classes specific version.
• each resource have @inject (from google guice) in constructor inject services.

i created 2 classes annotated @applicationpath: applicationv1rs , applicationv2rs. in both added same resources classes (userresource , helloresource), test.

my module configured this:

public class hellomodule implements module {    public void configure(final binder binder)    {       binder.bind(igreeterservice.class).to(greeterservice.class);        binder.bind(iuserservice.class).to(userservice.class);    } } 

when call http://localhost:9095/v1/hello/world or http://localhost:9095/v2/hello/world, receive same error:

java.lang.runtimeexception: resteasy003190: not find constructor      class: org.jboss.resteasy.examples.guice.hello.helloresource 

well, expected, not works. google guice not "smart" instantiate resource classes using construtor me.

but can't find way work. honest, i'm confuse how google guice, jetty , resteasy play each other in scenario.

if abandon idea of use @applicationpath, resources work google guice configuring hellomodule this:

public class hellomodule implements module {    public void configure(final binder binder)    {       binder.bind(helloresource.class);       binder.bind(igreeterservice.class).to(greeterservice.class);        binder.bind(userresource.class);       binder.bind(iuserservice.class).to(userservice.class);    } } 

but in case, i'm passing control register resources (helloresource , userresource) guice. it's not flexible me, can't setup multiple @applicationpath.

so, i'm missing or not understanding?

i created project problemetic code. easy setup , test: https://github.com/dherik/resteasy-guice-hello/tree/so-question/readme.md

thanks!

when have getclasses method in application tries create instance registered resources using default constructor missing in our resources class. 1 way create default constructor , inject dependencies through setter injection. , instead of overriding getclasses in applicationv1rs , applicationv2rs override getsingletons. since resources can singleton.

below changes made make work way want.

applicationv1rs.java

@applicationpath("v1") public class applicationv1rs extends application {      private set<object> singletons = new hashset<object>();      public applicationv1rs(@context servletcontext servletcontext) {     }      @override     public set<object> getsingletons() {         injector injector = guice.createinjector(new hellomodule());          helloresource helloresource = injector.getinstance(helloresource.class);         userresource userresource = injector.getinstance(userresource.class);         singletons.add(helloresource);         singletons.add(userresource);         return singletons;     } } 

applicationv2rs.java

@applicationpath("v2") public class applicationv2rs extends application {      private set<object> singletons = new hashset<object>();      public applicationv2rs(@context servletcontext servletcontext) {     }      @override     public set<object> getsingletons() {         injector injector = guice.createinjector(new hellomodule());          helloresource helloresource = injector.getinstance(helloresource.class);         userresource userresource = injector.getinstance(userresource.class);         singletons.add(helloresource);         singletons.add(userresource);         return singletons;     } } 

helloresource.java

@path("hello") public class helloresource {     @inject     private igreeterservice greeter;      public helloresource() {     }      @get     @path("{name}")     public string hello(@pathparam("name") final string name) {         return greeter.greet(name);     } } 

userresource.java

@path("user") public class userresource {      @inject     private iuserservice userservice;      public userresource() {     }      @get     @path("{name}")     public string hello(@pathparam("name") final string name) {         return userservice.getuser(name);     } } 

add @singleton service classes.

hope helps.

i have pushed code forked repo. check out