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要求されたBeanは現在作成中です。解決できない循環参照はありますか？

spring 3を使用していますが、ビュースコープのBeanが2つあります：

1- Bean1：

@Component("bean1")
@Scope("view")
public class Bean1 {

@Autowired
private Bean2 bean2;

}

2- Bean2：

@Component("bean2")
@Scope("view")
public class Bean2 {

@Autowired
private Bean1 bean1;

}

ビューはカスタムスコープです。

<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
        <property name="scopes">
            <map>
                <entry key="view">
                    <bean class="${project.groupId}.utils.ViewScope" />
                </entry>
            </map>
        </property>
    </bean>

カスタムビュースコープのコードは次のとおりです。

public class ViewScope implements Scope {

    @SuppressWarnings("rawtypes")
    public Object get(String name, ObjectFactory objectFactory) {
        Map<String, Object> viewMap = FacesContext.getCurrentInstance()
                .getViewRoot().getViewMap();

        if (viewMap.containsKey(name)) {
            return viewMap.get(name);
        } else {
            Object object = objectFactory.getObject();
            viewMap.put(name, object);

            return object;
        }
    }

    public Object remove(String name) {
        return FacesContext.getCurrentInstance().getViewRoot().getViewMap()
                .remove(name);
    }

    public String getConversationId() {
        return null;
    }

    public void registerDestructionCallback(String name, Runnable callback) {
        // Not supported
    }

    public Object resolveContextualObject(String key) {
        return null;
    }
}

両方のBeanを使用するページを開くと、例外が発生します。

org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'agencyBean': Requested bean is currently in creation: Is there an unresolvable circular reference?
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:252)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:190)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.Java:844)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:786)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:703)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:474)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:84)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:282)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1074)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.Java:329)
    at com.myapp.utils.ViewScope.get(ViewScope.Java:20)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:325)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:190)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.Java:844)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:786)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:703)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:474)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:84)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:282)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1074)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.Java:329)
    at com.xeno.xecamp.webManagement.utils.ViewScope.get(ViewScope.Java:20)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:325)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:190)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.Java:1075)
    at org.springframework.beans.factory.access.el.SpringBeanELResolver.getValue(SpringBeanELResolver.Java:56)
    at com.Sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.Java:176)
    at com.Sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.Java:203)
    at org.Apache.el.parser.AstIdentifier.getValue(AstIdentifier.Java:71)
    at org.Apache.el.parser.AstValue.getTarget(AstValue.Java:94)
    at org.Apache.el.parser.AstValue.invoke(AstValue.Java:244)
    at org.Apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.Java:278)
    at com.Sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.Java:105)
    at com.Sun.faces.facelets.tag.jsf.core.DeclarativeSystemEventListener.processEvent(EventHandler.Java:128)
    at javax.faces.component.UIComponent$ComponentSystemEventListenerAdapter.processEvent(UIComponent.Java:2508)
    at javax.faces.event.SystemEvent.processListener(SystemEvent.Java:106)
    at com.Sun.faces.application.ApplicationImpl.processListeners(ApplicationImpl.Java:2139)
    at com.Sun.faces.application.ApplicationImpl.invokeComponentListenersFor(ApplicationImpl.Java:2087)
    at com.Sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.Java:286)
    at com.Sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.Java:244)
    at org.springframework.faces.webflow.Jsf2FlowApplication.publishEvent(Jsf2FlowApplication.Java:94)
    at com.Sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.Java:108)
    at com.Sun.faces.lifecycle.Phase.doPhase(Phase.Java:101)
    at com.Sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.Java:139)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.Java:594)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:304)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.Java:118)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:368)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.Java:99)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.Java:83)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.Java:97)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.Java:60)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.Java:78)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.Java:119)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.Java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.Java:35)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.Java:177)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.Java:187)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.Java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.Java:57)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.Java:169)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.Java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.Java:167)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.Java:70)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.Apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.Java:684)
    at org.Apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.Java:471)
    at org.Apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.Java:402)
    at org.Apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.Java:329)
    at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.Java:110)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:368)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.Java:109)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.Java:83)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.Java:97)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.Java:100)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.Java:78)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.Java:119)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.Java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.Java:35)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.Java:177)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.Java:187)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.Java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.Java:79)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.Java:380)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.Java:169)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.Java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.Java:167)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.Java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.Java:76)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:243)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:224)
    at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:169)
    at org.Apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.Java:472)
    at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:168)
    at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:100)
    at org.Apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.Java:929)
    at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:118)
    at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:405)
    at org.Apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.Java:964)
    at org.Apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.Java:515)
    at org.Apache.Tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.Java:304)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.Java:886)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:908)
    at Java.lang.Thread.run(Thread.Java:619)

この例外を修正する方法を教えてください。

[〜＃〜] edit [〜＃〜]：セッターインジェクションを使用しようとしましたここの回答で参照されているとおり

Springコンテキストの初期化順序を理解する

しかし、それも機能しません。

1- Bean1：

@Component("bean1")
@Scope("view")
public class Bean1 {


private Bean2 bean2;

@Autowired
public void setBean2 (Bean2 bean2) {
    this.bean2= bean2;
}

}

2- Bean2：

@Component("bean2")
@Scope("view")
public class Bean2 {


private Bean1 bean1;

@Autowired
public void setBean1 (Bean1 bean1) {
    this.bean1= bean1;
}

}

しかし、それは私に例外を与えます：

org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.myapp.beans.Bean1] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
springdependency-injectionautowired
51
Mahmoud Saleh

Springは、この種の循環依存関係をシングルトンBeanで解決するために特別なロジックを使用します。ただし、これは他のスコープには適用されません。この循環依存関係を解消するエレガントな方法はありませんが、不器用なオプションは次のようになります。

@Component("bean1")
@Scope("view")
public class Bean1 {

    @Autowired
    private Bean2 bean2;

    @PostConstruct
    public void init() {
        bean2.setBean1(this);
    }
}

@Component("bean2")
@Scope("view")
public class Bean2 {

    private Bean1 bean1;

    public void setBean1(Bean1 bean1) {
        this.bean1 = bean1;
    }
}

とにかく、循環依存関係は通常、設計不良の症状です。クラスの依存関係を定義するより良い方法があれば、もう一度考えてみてください。

64
sinuhepop

私はあなたが春のを使用できると思います

@レイジー

自動配線フィールドの1つに注釈を付けて、循環依存関係を解除します。

これが前述のSpringバージョンで機能する/存在するかどうかはわかりません

63
FazoM

私の場合、Beanを定義し、同じクラスファイルのコンストラクターでそれを自動配線していました。

@SpringBootApplication
public class MyApplication {
    private MyBean myBean;

    public MyApplication(MyBean myBean) {
        this.myBean = myBean;
    }

    @Bean
    public MyBean myBean() {
        return new MyBean();
    }
}

私の解決策は、Bean定義を別のクラスファイルに移動することでした。

@Configuration
public CustomConfig {
    @Bean
    public MyBean myBean() {
        return new MyBean();
    }
}
3
Renato Back

私は非常に愚かな方法でこのエラーに遭遇しました

@Autowired
// private Bean bean;

public void myMethod() {
  return;
}

起こったのは、何らかの理由で行をコメントし、メソッドを自動配線する必要があると春に思わせる注釈を残したことです

2
masadwin

一般に、循環依存関係を処理する方法は、セッターインジェクションを使用することです。

あなたが投稿したセッターインジェクションコードを試してみましたが、うまくいきました。例外が発生する理由は、Bean1とBean2がcom.myapp.beansパッケージにあり、そのパッケージに対してコンポーネントスキャンが有効になっていないためだと思います。

スプリング設定に次を追加する必要があります。

<context:component-scan base-package="com.bullethq.accounts.web"/>

または、Springによって自動的にスキャンされるパッケージにBeanを移動します。

1
John Farrelly