Include Gradle dependencies in the classpath of a debug launch of another project in Eclipse

Question

I have a project with Gradle dependencies (say projectA) that, in order to debug it, is included in the class path of another project (say rootProject). The rootProject scans the classpath and loads projectA at runtime.

When I run rootProject, it says that dependencies of projectA are not found, by throwing a java.lang.ClassNotFoundException.

java.lang.NoClassDefFoundError: org/glassfish/jersey/server/ResourceConfig
    at be.vervaeck.sam.spongerest.RESTServer.<init>(RESTServer.java:18) ~[RESTServer.class:?]
    at be.vervaeck.sam.spongerest.RESTServer.<init>(RESTServer.java:27) ~[RESTServer.class:?]
    at be.vervaeck.sam.spongerest.SpongePlugin.onServerStart(SpongePlugin.java:25) ~[SpongePlugin.class:?]
    at org.spongepowered.common.event.listener.GameStartedServerEventListener_SpongePlugin_onServerStart2.handle(Unknown Source) ~[?:?]
    at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:86) ~[RegisteredListener.class:?]
    at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:238) [SpongeModEventManager.class:?]
    at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:282) [SpongeModEventManager.class:?]
    at org.spongepowered.mod.SpongeMod.onStateEvent(SpongeMod.java:184) [SpongeMod.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_74]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_74]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_74]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_74]
    at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
    at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211) [LoadController.class:?]
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189) [LoadController.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_74]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_74]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_74]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_74]
    at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
    at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
    at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
    at net.minecraftforge.fml.common.LoadController.onPost(LoadController.java:53) [LoadController.class:?]
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118) [LoadController.class:?]
    at net.minecraftforge.fml.common.Loader.serverStarted(Loader.java:800) [Loader.class:?]
    at net.minecraftforge.fml.common.FMLCommonHandler.handleServerStarted(FMLCommonHandler.java:289) [FMLCommonHandler.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:510) [MinecraftServer.class:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_74]
Caused by: java.lang.ClassNotFoundException: org.glassfish.jersey.server.ResourceConfig
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_74]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_74]
    ... 34 more

In Eclipse, how can I make sure projectA's dependencies are included in the class path of the debug session of rootProject?

Answer 1

You can declare a project dependency in build.gradle. Eg:

project(':rootProject') {
    dependencies {
        compile project(':projectA')
    }
}