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Cannot load provider in a servlet setup with spring #9

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knuclechan opened this issue Nov 30, 2021 · 6 comments
Open

Cannot load provider in a servlet setup with spring #9

knuclechan opened this issue Nov 30, 2021 · 6 comments

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@knuclechan
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knuclechan commented Nov 30, 2021 •
edited
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Experience an error No provider of PromiseProvider found! when running servlet application with spring.

I guess it may be related to the class loader hierarchy or class loading sequence.

Currently I hack around this by adding a listener to the servlet

	<listener>
		<listener-class>ServletStartupListener</listener-class>
	</listener>

public class ServletStartupListener implements ServletContextListener {
	
	public void contextInitialized(ServletContextEvent sce) {
		log.info("Init JAsync");
		JAsync.just();
	}
	
}

I think one approach to solve this issue is to lazy load the provider instead of loading it in the static phase at JAsync.class
@vipcxj
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vipcxj commented Nov 30, 2021

Can you show me the full exception stack? Providing a minimal recurrence use case is certainly more welcome.

@knuclechan
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Here is the stack trace.

11-30 15:00:05 WARN  - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accountServiceImpl' defined in file [AccountServiceImpl.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No provider of PromiseProvider found!
11-30 15:00:05 ERROR - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accountServiceImpl' defined in file [AccountServiceImpl.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No provider of PromiseProvider found!
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.13.jar:5.3.13]
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:401) ~[spring-web-5.3.13.jar:5.3.13]
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:292) ~[spring-web-5.3.13.jar:5.3.13]
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103) ~[spring-web-5.3.13.jar:5.3.13]
	at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:1043) ~[?:?]
	at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:624) ~[?:?]
	at org.eclipse.jetty.server.handler.ContextHandler.contextInitialized(ContextHandler.java:978) ~[?:?]
	at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:705) ~[?:?]
	at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:392) ~[?:?]
	at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1304) ~[?:?]
	at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:895) ~[?:?]
	at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:306) ~[?:?]
	at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:532) ~[?:?]
	at org.eclipse.jetty.maven.plugin.MavenWebAppContext.doStart(MavenWebAppContext.java:294) ~[?:?]
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
	at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:40) ~[?:?]
	at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:183) ~[?:?]
	at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:516) ~[?:?]
	at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:151) ~[?:?]
	at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:186) ~[?:?]
	at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:462) ~[?:?]
	at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:58) ~[?:?]
	at org.eclipse.jetty.util.Scanner$DiscreteListener.pathAdded(Scanner.java:282) ~[?:?]
	at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:836) ~[?:?]
	at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:802) ~[?:?]
	at org.eclipse.jetty.util.Scanner.scan(Scanner.java:709) ~[?:?]
	at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:597) ~[?:?]
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
	at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171) ~[?:?]
	at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121) ~[?:?]
	at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:158) ~[?:?]
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
	at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:605) ~[?:?]
	at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:246) ~[?:?]
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
	at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171) ~[?:?]
	at org.eclipse.jetty.server.Server.start(Server.java:469) ~[?:?]
	at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121) ~[?:?]
	at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:89) ~[?:?]
	at org.eclipse.jetty.server.Server.doStart(Server.java:414) ~[?:?]
	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
	at org.eclipse.jetty.xml.XmlConfiguration.lambda$main$4(XmlConfiguration.java:1867) ~[?:?]
	at java.security.AccessController.doPrivileged(AccessController.java:569) [?:?]
	at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1810) [jetty-xml-10.0.7.jar:10.0.7]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.eclipse.jetty.start.Main.invokeMain(Main.java:227) [start.jar:10.0.7]
	at org.eclipse.jetty.start.Main.start(Main.java:512) [start.jar:10.0.7]
	at org.eclipse.jetty.start.Main.main(Main.java:74) [start.jar:10.0.7]
Caused by: java.lang.IllegalStateException: No provider of PromiseProvider found!
	at io.github.vipcxj.jasync.spec.JAsync.assertProvider(JAsync.java:15) ~[jasync-spec-0.1.9.jar:?]
	at io.github.vipcxj.jasync.spec.JAsync.just(JAsync.java:21) ~[jasync-spec-0.1.9.jar:?]
	at util.AsyncUtils.toPromise(AsyncUtils.java:33) ~[classes/:?]
	at service.account.AccountServiceImpl.init$$tmp$$3(AccountServiceImpl.java:56) ~[classes/:?]
	at io.github.vipcxj.jasync.spec.Utils.safeApply(Utils.java:22) ~[jasync-spec-0.1.9.jar:?]
	at io.github.vipcxj.jasync.reactive.ReactorPromise.lambda$then$0(ReactorPromise.java:48) ~[jasync-reactive-0.1.9.jar:?]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:125) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:79) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.MonoUsingWhen$MonoUsingWhenSubscriber.deferredComplete(MonoUsingWhen.java:278) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.FluxUsingWhen$CommitInner.onComplete(FluxUsingWhen.java:540) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:2058) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:260) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:2058) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:209) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:209) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.pool.SimpleDequePool.lambda$maybeRecycleAndDrain$19(SimpleDequePool.java:512) ~[reactor-pool-0.2.5.jar:0.2.5]
	at reactor.core.publisher.LambdaMonoSubscriber.onComplete(LambdaMonoSubscriber.java:135) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onComplete(FluxDoFinally.java:145) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onComplete(MonoIgnoreElements.java:89) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1817) ~[reactor-core-3.4.12.jar:3.4.12]
	at reactor.core.publisher.MonoCompletionStage.lambda$subscribe$0(MonoCompletionStage.java:83) ~[reactor-core-3.4.12.jar:3.4.12]
	at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841) ~[?:?]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510) ~[?:?]
	at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147) ~[?:?]
	at com.github.jasync.sql.db.mysql.MySQLConnection$close$$inlined$onCompleteAsync$1$lambda$2.accept(FutureUtils.kt:107) ~[jasync-mysql-2.0.2.jar:?]
	at com.github.jasync.sql.db.mysql.MySQLConnection$close$$inlined$onCompleteAsync$1$lambda$2.accept(FutureUtils.kt) ~[jasync-mysql-2.0.2.jar:?]
	at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841) ~[?:?]
	at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483) ~[?:?]
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?]
	at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?]
	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?]
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?]
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?]
	Suppressed: java.lang.Exception: #block terminated with an error
		at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:99) ~[reactor-core-3.4.12.jar:3.4.12]
		at reactor.core.publisher.Mono.block(Mono.java:1707) ~[reactor-core-3.4.12.jar:3.4.12]
		at io.github.vipcxj.jasync.reactive.ReactorPromise.block(ReactorPromise.java:462) ~[jasync-reactive-0.1.9.jar:?]
		at service.account.AccountServiceImpl.afterPropertiesSet(AccountServiceImpl.java:47) ~[classes/:?]
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1863) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.13.jar:5.3.13]
		at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.13.jar:5.3.13]
		at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.13.jar:5.3.13]
		at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:401) ~[spring-web-5.3.13.jar:5.3.13]
		at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:292) ~[spring-web-5.3.13.jar:5.3.13]
		at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103) ~[spring-web-5.3.13.jar:5.3.13]
		at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:1043) ~[?:?]
		at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:624) ~[?:?]
		at org.eclipse.jetty.server.handler.ContextHandler.contextInitialized(ContextHandler.java:978) ~[?:?]
		at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:705) ~[?:?]
		at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:392) ~[?:?]
		at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1304) ~[?:?]
		at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:895) ~[?:?]
		at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:306) ~[?:?]
		at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:532) ~[?:?]
		at org.eclipse.jetty.maven.plugin.MavenWebAppContext.doStart(MavenWebAppContext.java:294) ~[?:?]
		at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
		at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:40) ~[?:?]
		at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:183) ~[?:?]
		at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:516) ~[?:?]
		at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:151) ~[?:?]
		at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:186) ~[?:?]
		at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:462) ~[?:?]
		at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:58) ~[?:?]
		at org.eclipse.jetty.util.Scanner$DiscreteListener.pathAdded(Scanner.java:282) ~[?:?]
		at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:836) ~[?:?]
		at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:802) ~[?:?]
		at org.eclipse.jetty.util.Scanner.scan(Scanner.java:709) ~[?:?]
		at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:597) ~[?:?]
		at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
		at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171) ~[?:?]
		at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121) ~[?:?]
		at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:158) ~[?:?]
		at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
		at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:605) ~[?:?]
		at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:246) ~[?:?]
		at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
		at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:171) ~[?:?]
		at org.eclipse.jetty.server.Server.start(Server.java:469) ~[?:?]
		at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:121) ~[?:?]
		at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:89) ~[?:?]
		at org.eclipse.jetty.server.Server.doStart(Server.java:414) ~[?:?]
		at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:93) ~[?:?]
		at org.eclipse.jetty.xml.XmlConfiguration.lambda$main$4(XmlConfiguration.java:1867) ~[?:?]
		at java.security.AccessController.doPrivileged(AccessController.java:569) [?:?]
		at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1810) [jetty-xml-10.0.7.jar:10.0.7]
		at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
		at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
		at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
		at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
		at org.eclipse.jetty.start.Main.invokeMain(Main.java:227) [start.jar:10.0.7]
		at org.eclipse.jetty.start.Main.start(Main.java:512) [start.jar:10.0.7]
		at org.eclipse.jetty.start.Main.main(Main.java:74) [start.jar:10.0.7]

@knuclechan
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knuclechan commented Nov 30, 2021 •
edited
Loading

I haven't tested this. But should be able to repeat the issue.

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
	version="4.0"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
	metadata-complete="true"
>

	<context-param>
		<param-name>contextClass</param-name>
		<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
	</context-param>
    	
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>config.SpringConfig</param-value>
	</context-param>
	
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
</web-app>

config.SpringConfg.java

package config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@ComponentScan(basePackages="service")
public class SpringConfig {
	
}

service.account.AccountServiceImpl.java

package service.account;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Service;

@Service
public class AccountServiceImpl implements InitializingBean {
	
	public void afterPropertiesSet() throws Exception {
		JAsync.just();
	}
}

@vipcxj
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vipcxj commented Nov 30, 2021

Can you give me a scaffold project？ Just push to you github repositories.

@knuclechan
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Sorry, it will be too time consuming for me to make a scaffold project.

By the way, I think the cause maybe because I start the server using maven (without fork), where maven somehow didn't load the provider

@vipcxj
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vipcxj commented Dec 6, 2021

The provider is only loaded in the runtime. At compile time, nothing runtime thing is touched.

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