Concrete bean could not be received from the application context

[stefv]

Hello,

I'm making a spring boot application using Wicket and PF4J. I want to use spring services in my plugins. These services are not using services outside the plugin class loader. In my plugin, I can have wicket panels. The panel class can use the Spring service.

Here the class of the plugin:

public class MyPlugin extends SpringPlugin implements MyPluginConfiguration {

	public MyPlugin(PluginWrapper wrapper) {
		super(wrapper);
	}

	@Override
	protected ApplicationContext createApplicationContext() {
		final AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();
		applicationContext.setClassLoader(getWrapper().getPluginClassLoader());
		applicationContext.register(SpringConfiguration.class);
		applicationContext.refresh();
		return applicationContext;
	}

	@Override
	public Panel getConfigurationPanel(String wicketId) {
		return new ConfigurationPanel(wicketId);
	}

}

Its interface:

public interface MyPluginConfiguration {

	Panel getConfigurationPanel(String wicketId);
}

The SpringConfiguration class:

@Configuration
public class SpringConfiguration {

	@Bean
	public LabelService getLabelService() {
		return new LabelService();
	}
}

The configuration panel:

public class ConfigurationPanel extends Panel {

	@SpringBean
	private LabelService labelService;

	public ConfigurationPanel(String id) {
		super(id);

		add(new Label("text", labelService.getLabel()));
	}

}

And the service:

@Service
public class LabelService {

	public String getLabel() {
		return "Hello World from the plugin.";
	}
}

To display the configuration, i'm using this page in my application:

public class PluginTestPage extends WebPage {

	@SpringBean
	private PluginManager pluginManager;

	public PluginTestPage() {
		final PluginWrapper pluginWrapper = pluginManager.getPlugin("example");
		if (pluginWrapper.getPlugin() instanceof MyPluginConfiguration) {
			final MyPluginConfiguration pluginConfiguration = (MyPluginConfiguration) pluginWrapper.getPlugin();
			add(pluginConfiguration.getConfigurationPanel("configuration-panel"));
		} else {
			add(new Label("configuration-panel", "Can't get the configuration panel"));
		}
	}

}

When I'm asking the PluginTestPage, I have this error:

org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public com.example.pages.PluginTestPage()'. An exception has been thrown during construction!
	at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:194) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:67) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:90) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.core.request.handler.PageProvider$Provision.getPage(PageProvider.java:369) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:170) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:231) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:202) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:917) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:63) ~[wicket-request-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:283) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:254) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:222) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:276) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:207) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:300) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
Caused by: java.lang.reflect.InvocationTargetException: null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[na:na]
	at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:175) ~[wicket-core-9.0.0.jar:9.0.0]
	... 33 common frames omitted
Caused by: java.lang.IllegalStateException: Concrete bean could not be received from the application context for class: com.example.pf4j_wicket_spring.services.LabelService.
	at org.apache.wicket.spring.SpringBeanLocator.lookupSpringBean(SpringBeanLocator.java:277) ~[wicket-spring-9.0.0.jar:9.0.0]
	at org.apache.wicket.spring.SpringBeanLocator.locateProxyTarget(SpringBeanLocator.java:198) ~[wicket-spring-9.0.0.jar:9.0.0]
	at org.apache.wicket.spring.injection.annot.AnnotProxyFieldValueFactory.getFieldValue(AnnotProxyFieldValueFactory.java:150) ~[wicket-spring-9.0.0.jar:9.0.0]
	at org.apache.wicket.injection.Injector.inject(Injector.java:111) ~[wicket-ioc-9.0.0.jar:9.0.0]
	at org.apache.wicket.spring.injection.annot.SpringComponentInjector.inject(SpringComponentInjector.java:124) ~[wicket-spring-9.0.0.jar:9.0.0]
	at org.apache.wicket.spring.injection.annot.SpringComponentInjector.onInstantiation(SpringComponentInjector.java:130) ~[wicket-spring-9.0.0.jar:9.0.0]
	at org.apache.wicket.application.ComponentInstantiationListenerCollection$1.notify(ComponentInstantiationListenerCollection.java:38) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.application.ComponentInstantiationListenerCollection$1.notify(ComponentInstantiationListenerCollection.java:34) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.util.listener.ListenerCollection.notify(ListenerCollection.java:80) ~[wicket-util-9.0.0.jar:9.0.0]
	at org.apache.wicket.application.ComponentInstantiationListenerCollection.onInstantiation(ComponentInstantiationListenerCollection.java:33) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.Component.<init>(Component.java:682) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.MarkupContainer.<init>(MarkupContainer.java:185) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.markup.html.WebMarkupContainer.<init>(WebMarkupContainer.java:53) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.markup.html.WebMarkupContainer.<init>(WebMarkupContainer.java:45) ~[wicket-core-9.0.0.jar:9.0.0]
	at org.apache.wicket.markup.html.panel.Panel.<init>(Panel.java:67) ~[wicket-core-9.0.0.jar:9.0.0]
	at com.example.pf4j_wicket_spring.panels.ConfigurationPanel.<init>(ConfigurationPanel.java:25) ~[na:na]
	at com.example.pf4j_wicket_spring.MyPlugin.getConfigurationPanel(MyPlugin.java:40) ~[na:na]
	at com.example.pages.PluginTestPage.<init>(PluginTestPage.java:30) ~[classes/:na]
	... 38 common frames omitted

Is it a mistake with my settings ?

Regards,
Stef

[decebals]

Please take a look at pf4j-wicket. Maybe you can match pf4j-spring with pf4j-wicket.
By the way, I used Wicket in the past with a real success and pleasure. It's a nice web framework.