Jersey 2.26+:将HK2的工厂转换为供应商后未调用configure（）

Question

为了简化我们的web服务，我想使用版本2.34中的Jersey框架引入一个自定义的MyObj类，并希望通过@Context注释注入创建的实例。

我有两个问题：

工作HK2工厂示例：

public class MyObjHK {}

import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.glassfish.jersey.process.internal.RequestScoped;
public class BinderHK
extends AbstractBinder {
    @Override protected void configure() {
        bindFactory(MyObjFactoryHK.class).to(MyObjHK.class).in(RequestScoped.class);
    }
}

import org.glassfish.hk2.api.Factory;
public class MyObjFactoryHK
implements Factory<MyObjHK> {
    @Override public MyObjHK provide() {return new MyObjHK();} // ok
    @Override public void dispose(MyObjHK instance) {};
}

public class API_HK2 {
    @GET
    public static Response myobjhk(@Context MyObjHK obj) {
        System.out.println("called hk, obj="+obj); // ok
        return Response.ok().build();
    }
}

不工作供应商示例：

public class MyObj {}

import org.glassfish.jersey.internal.inject.AbstractBinder;
import org.glassfish.jersey.process.internal.RequestScoped;
public class Binder
extends AbstractBinder {
    @Override protected void configure() { // not called ???
        bindFactory(MyObjFactory.class).to(MyObj.class).in(RequestScoped.class);
    }
}

import java.util.function.Supplier;
public class MyObjFactory
implements Supplier<MyObj> { 
    @Override public MyObj get() {return new MyObj();}
}

public class API {
    @GET
    public static Response myobj(@Context MyObj obj) {
        System.out.println("called, obj="+obj); // null ???
        return Response.ok().build();
    }
}

Answer 1

绑定器不能用jersey.config.classnamesinit-param注册。您需要用resourceConfig或Feature注册它（并用init-param注册该特性）

@Provider
public class MyFeature implements Feature {
    @Override
    pubic boolean configure(FeatureContext ctx) {
        ctx.register(new MyBinder());
        return true;
    }
}