2012-01-10 27 views
2

1つのDAOクラスと1つのサービス(BO)クラスを想像してください。 FwObjectユーザ関連情報やコードのこれらの部分を有するので、自動的setFwObject方法FwObjectを注入する方法、フレームワークの内部で書き込まれるべき春の動的オブジェクトインジェクション - @Autowired

Class MyAction exdends ActionSupport{ 
    @Autowired 
    private SomeService someService; 

    @Autowired 
    FwBean fwObj; 

    execute(){ 
      fwObj.set(fromRequest()); //build this object using request and session values 
    }  
} 


@Service 
class PersonServiceImpl {   
    @Autowired 
    private SomeDAO someDao;    
} 



@Repository 
    class PersonDAO { 
     @Autowired 
     public void setFwBean(FwBean obj) { 
     System.out.println(obj); 
     this.fwObject = obj //object will be come from MyAction 
    } 
} 

  <filter> 
      <filter-name>struts2</filter-name> 
      <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> 
     </filter> 

     <filter-mapping> 
      <filter-name>struts2</filter-name> 
      <url-pattern>/*</url-pattern> 
     </filter-mapping> 

     <context-param> 
      <param-name>contextConfigLocation</param-name> 
      <param-value>classpath:applicationContext.xml</param-value> 
     </context-param> 

     <listener> 
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
     </listener> 
     <listener> 
      <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> 
     </listener> 

    </web-app> 


<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
     xmlns:p="http://www.springframework.org/schema/p" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xmlns:tx="http://www.springframework.org/schema/tx" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xmlns:aop="http://www.springframework.org/schema/aop" 
     xmlns:jdbc="http://www.springframework.org/schema/jdbc" 
     xsi:schemaLocation=" 
      http://www.springframework.org/schema/beans 
      http://www.springframework.org/schema/beans/spring-beans.xsd 
      http://www.springframework.org/schema/aop 
      http://www.springframework.org/schema/aop/spring-aop.xsd 
      http://www.springframework.org/schema/tx 
      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
      http://www.springframework.org/schema/jdbc 
      http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd 
      http://www.springframework.org/schema/context 
      http://www.springframework.org/schema/context/spring-context-3.0.xsd"> 

    <!-- scans the classpath for annotated components (including @Repostory 
    and @Service that will be auto-registered as Spring beans -->  
    <bean id="fwBean" class="com.sriseshaa.fw.helper.FwBean" scope="request"> 

      <!-- this next element effects the proxying of the surrounding bean --> 
      <aop:scoped-proxy/> 
    </bean> 

    <context:component-scan base-package="com.sriseshaa" /> 

    <!-- methods or classes needing to run in a complete transaction will 
    be annotated with Transactional --> 
    <tx:annotation-driven /> 

    <!-- Creates a data source that can provide a connection to in-memory embedded database populated 
    with test data 
    see: http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/ch12s08.html --> 
    <bean id="dataSource" 
     class="org.springframework.jdbc.datasource.DriverManagerDataSource" > 
     <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
     <property name="url" value="jdbc:mysql://localhost/fwtest" /> 
     <property name="username" value="root" /> 
     <property name="password" value="" /> 
    </bean> 


    <!-- This will ensure that hibernate or jpa exceptions are automatically translated into 
     Spring's generic DataAccessException hierarchy for those classes annotated with Repository 
     For example see PersonDaoJpa--> 
    <bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/> 

    <!-- JPA Entity Manager Factory --> 
    <bean id="entityManagerFactory" 
      class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" 
      p:dataSource-ref="dataSource" 
      p:persistenceXmlLocation="META-INF/persistence.xml" 
      p:persistenceUnitName="springJpaPersistenceUnit" />   


    <!-- bean post-processor for JPA annotations --> 
    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" /> 


    <!-- Transaction Config --> 
    <bean id="transactionManager" 
      class="org.springframework.orm.jpa.JpaTransactionManager" 
      p:entityManagerFactory-ref="entityManagerFactory"/> 

    <!-- use declarative transaction management --> 
    <tx:annotation-driven transaction-manager="transactionManager"/> 




</beans> 

例外

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personDao': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.fwBean': Scope 'request' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285) 
    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$1.getObject(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) 
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) 
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4765) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5260) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1525) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1515) 
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
    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) 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.fwBean': Scope 'request' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:339) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) 
    at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:33) 
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.getTarget(Cglib2AopProxy.java:653) 
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:604) 
    at com.sriseshaa.fw.helper.FwBean$$EnhancerByCGLIB$$79187402.toString(<generated>) 
    at com.sriseshaa.fw.helper.dao.AbstractDAO.setFwObject(AbstractDAO.java:86) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:582) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:282) 
    ... 23 more 
Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request. 
    at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131) 
    at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:40) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:325) 
    ... 36 more 

方法慎重に新しいFwBeaを作成する必要があるため、リクエストレベルの範囲をFwBeanに設定してください任意のリクエストごとにnインスタンスまたはリクエストごとにFwBeanインスタンスを持ちます

+0

正常に動作しているとの質問はありますか? – soulcheck

+0

私は質問が何であるか完全にはわかりません。どうして 'SomeDao'をオートワイヤーしないの? –

+0

annotationsを使用してsetFwObjectメソッドにFwObjectを挿入する方法 – Arun

答えて

5

FwObjectは、Spring Beanでなければなりません。工場パターンに従ったければ、Springはbean内のfactory-method属性を使ってそれをサポートしています。

@Repository 
    class SomeDAO { 
    @Autowired 
    public void setFwObject(FwObject obj) { 
    this.fwObject = obj 
    } 
} 

は、Spring Beanの場合はFwObjectをオートワイヤードする必要があります。それ以外の場合は、getAutowireCapableBeanFactory()を使用し、autowireメソッドを使用します。要求アクティブでないエラーのために

、 定義されますが、問題は、setterメソッドの中にあったhere

If you want to inject a (for example) HTTP request scoped bean into another bean, you 
will need to inject an AOP proxy in place of the scoped bean. That is, you need to 
inject a proxy object that exposes the same public interface as the scoped object, but 
that is smart enough to be able to retrieve the real, target object from the relevant 
scope (for example a HTTP request) and delegate method calls onto the real object. 
0

参照して

<aop:scoped-proxy/> 

を使用してみてください。私はfwbean.toString()メソッドを呼び出そうとしました。その行(//するSystem.out.println(OBJ)を;)を除去した後、それは

@Repository 
    class PersonDAO { 
     @Autowired 
     public void setFwBean(FwBean obj) { 
     // System.out.println(obj); defect line 
     this.fwObject = obj //object will be come from MyAction 
    } 
} 
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