自动连接具有@configuration@enablescheduling@component注解的bean组件时出错

a5g8bdjr  于 2021-07-24  发布在  Java
关注(0)|答案(1)|浏览(371)

我在sprig应用程序中工作，它有一个scheduledjob类，具有以下注解

@Configuration
@EnableScheduling
@Component 
public class ScheduledJob {
//code
}

我需要自动连接到另一个类notificationserviceimpl。我给了

@Service
public class NotificationServiceImp implements NotificationService{
  @Autowired
  private ScheduledJob scheduledJob;
//code

}

我得到以下错误

06:23:36,678 WARN  [org.springframework.web.context.support.AnnotationConfigWebApplicationContext] (ServerService Thread Pool -- 99) Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'notificationServiceImp': Unsatisfied dependency expressed through field 'scheduledJob'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.storilabs.of.schedules.ScheduledJob' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
06:23:36,688 ERROR [org.springframework.web.context.ContextLoader] (ServerService Thread Pool -- 99) Context initialization failed: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'notificationServiceImp': Unsatisfied dependency expressed through field 'scheduledJob'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.storilabs.of.schedules.ScheduledJob' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:758) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) [spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) [spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:409) [spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291) [spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103) [spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:216) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:185) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:250) [undertow-servlet-2.0.19.Final.jar:2.0.19.Final]
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [rt.jar:1.8.0_271]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_271]
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_271]
    at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.storilabs.of.schedules.ScheduledJob' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1504) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1101) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1062) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) [spring-beans-5.0.2.RELEASE.jar:5.0.2.RELEASE]
    ... 36 more

我刚到Spring。请帮我解决这个问题。
编辑计划类函数在计划时间内工作正常。没有发现任何问题。但我目前的需求是再添加一个选项来使用api调用触发这个函数。这样我就可以启动一个新的触发器，通过发送这个api调用随时发送通知。
我尝试过在没有自动连接的情况下创建一个新对象（我知道这不是一个好方法）

ScheduledJob scheduledJob = new ScheduledJob();

调用内部函数，比如 scheduledJob.function() 预定类函数在预定时间内工作正常。当函数按计划时间运行时，未发现异常或任何内容。如果函数按api调用，则在调用该函数中的其他java对象时，会发生空指针异常。我认为其他自动连线对象此时可能无法初始化

JavaspringHibernatespring-mvcAutowired

1条答案

按热度按时间
l7mqbcuq

l7mqbcuq1#

我认为您使用@configuration注解的方式有问题。我想在您的案例中，实现应该如下所示：

@Configuration
@EnableScheduling
public class AppConfig {
    @Bean
    public Task task() {
        return new Task();
    }
}

@configuration只负责bean的创建。如果您以前使用过xml驱动的配置，那么它就是xml bean定义的替代品。在上面的示例中，它创建了一个bean，您可以在应用程序中自动连接它。
计划bean的真正实现可以定义如下：

public class Task {
    @Scheduled(fixedRate=2000)
    public void doTask(){
        System.out.println("do some task");
    }
}

这确实给了您实现的灵活性。

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