Java Hibernate 集合不与任何会话相关联
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时间：2020-08-12 12:53:49 来源:igfitidea点击:
Hibernate collection is not associated with any session
提问by DominikM
I have found several questions and answers with regard to this issue on SO, but they all seem to cover one major cause of the problem: fetching a collection outside of a transaction or within another transaction. But in my case, I am fetching within the same transaction when fetching a parent object and collection.
我在 SO 上找到了几个关于这个问题的问题和答案，但它们似乎都涵盖了问题的一个主要原因：在事务之外或在另一个事务中获取集合。但在我的情况下，我在获取父对象和集合时在同一个事务中获取。
@Service
@Transactional
public class IntegrationServiceImpl implements IntegrationService {
@Override
public Integration getIntegrationByIdFetchBackendParameters(Long integrationId) {
Integration integration = integrationDao.get(integrationId);
//not all integrations have to have backend.
if (integration.getBackend() != null) {
Hibernate.initialize(integration.getBackend().getBackendParameters());
}
return integration;
}
...
But when it comes to Hibernate.initialize this branch in org.hibernate.collection.internal.AbstractPersistentCollection is executed
但是当涉及到 Hibernate.initialize 这个分支在 org.hibernate.collection.internal.AbstractPersistentCollection 时被执行
if ( session == null ) {
throw new HibernateException( "collection is not associated with any session" );
}
I cant see why sessionis null. Would someone explain this and suggest a solution?
我不明白为什么session是null。有人会解释这一点并提出解决方案吗？
EDIT 1 - Full stack trace
编辑 1 - 完整的堆栈跟踪
org.hibernate.HibernateException: collection is not associated with any session
at org.hibernate.collection.internal.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:676)
at org.hibernate.Hibernate.initialize(Hibernate.java:77)
at com.dhl.finFw.service.IntegrationServiceImpl.getIntegrationByIdFetchBackendParameters(IntegrationServiceImpl.java:169)
at com.dhl.finFw.web.integration.IntegrationOverviewManagedBean.loadIntegration(IntegrationOverviewManagedBean.java:59)
at com.dhl.finFw.web.integration.AbstractIntegrationManagedBean.initCommonFields(AbstractIntegrationManagedBean.java:69)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:344)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:295)
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:130)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:524)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:333)
at com.dhl.finFw.spring.scope.ViewScope.get(ViewScope.java:30)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:329)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1117)
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:72)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:68)
at org.apache.el.parser.AstValue.getValue(AstValue.java:161)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
at com.sun.faces.facelets.tag.jstl.core.ForEachHandler.apply(ForEachHandler.java:161)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:166)
at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)
at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:87)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:320)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:379)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:358)
at com.sun.faces.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:199)
at com.sun.faces.facelets.tag.ui.IncludeHandler.apply(IncludeHandler.java:120)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
at com.sun.faces.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:106)
at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:178)
at com.sun.faces.facelets.impl.DefaultFaceletContext$TemplateManager.apply(DefaultFaceletContext.java:395)
at com.sun.faces.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:366)
at com.sun.faces.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:111)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137)
at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:187)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
at com.sun.faces.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:179)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)
at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:87)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:320)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:379)
at com.sun.faces.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:358)
at com.sun.faces.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:199)
at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:155)
at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)
at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:87)
at com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:164)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:870)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99)
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:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.dhl.finFw.web.filter.FileNotFoundFilter.doFilter(FileNotFoundFilter.java:40)
at com.dhl.finFw.web.filter.FileNotFoundFilter.doFilter(FileNotFoundFilter.java:35)
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.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
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:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:64)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Edit 2 - configuration
编辑 2 - 配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<bean id="environmentVariablesConfiguration"
class="org.jasypt.encryption.pbe.config.EnvironmentStringPBEConfig">
<property name="algorithm" value="PBEWithMD5AndDES" />
<property name="passwordSysPropertyName" value="APP_ENCRYPTION" />
</bean>
<bean id="configurationEncryptor"
class="org.jasypt.encryption.pbe.StandardPBEStringEncryptor">
<property name="config" ref="environmentVariablesConfiguration" />
</bean>
<bean id="propertyConfigurer"
class="org.jasypt.spring31.properties.EncryptablePropertyPlaceholderConfigurer">
<constructor-arg ref="configurationEncryptor" />
<property name="locations">
<list>
<value>${finFw.config.location}finFwUI.properties</value>
<value>classpath:application.properties</value>
<value>classpath:dateTime.properties</value>
</list>
</property>
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/>
</bean>
<context:component-scan base-package="com.dhl.finFw"/>
<context:annotation-config/>
<tx:annotation-driven/>
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceUnitName" value="FINFW"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="${finFwUI.orm.generateDdl:false}"/>
<property name="showSql" value="${finFwUI.orm.showSql:false}"/>
<property name="databasePlatform" value="${finFwUI.orm.dialect}"/>
</bean>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<aop:aspectj-autoproxy/>
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="view">
<bean class="com.dhl.finFw.spring.scope.ViewScope"/>
</entry>
</map>
</property>
</bean>
<bean class="org.springframework.web.context.support.ServletContextAttributeExporter">
<property name="attributes">
<map>
<entry key="finFwUIEnvironment" value="${finFwUI.environment}" />
</map>
</property>
</bean>
<bean id="eventListenerBean" class="com.dhl.finFw.spring.FinFwApplicationListener" />
</beans>
web.xml
网页.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>FinFwUI</display-name>
<description>Financial Framework Configuration</description>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>fileServlet</servlet-name>
<servlet-class>com.dhl.finFw.web.FileServlet</servlet-class>
</servlet>
<!-- Location of the Log4J config file, for initialization and refresh checks.
Applied by Log4jConfigListener. The variable is replaced with System property
at runtime. -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>${finFw.config.location}log4j-finFwUI.properties</param-value>
</context-param>
<!-- Application version. The variable is replaced during Maven build. -->
<context-param>
<param-name>applicationVersion</param-name>
<param-value>${applicationVersion}</param-value>
</context-param>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>dhl</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_LIBRARIES</param-name>
<param-value>/WEB-INF/springsecurity.taglib.xml</param-value>
</context-param>
<!-- possible values: Development, Production, SystemTest, UnitTest The
variable is replaced during Maven build or set as System property during
development. -->
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>${finFwUI.jsf.stage}</param-value>
</context-param>
<!-- Spring application context config locations -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:com/dhl/finFw/finFwUI-core.xml
classpath:com/dhl/finFw/finFwUI-dataSource.xml
classpath:com/dhl/finFw/finFwUI-security.xml
classpath:com/dhl/finFw/finFwUI-forms.xml
classpath:com/dhl/finFw/finFwUI-audit.xml
</param-value>
</context-
<context-param>
<param-name>javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE</param-name>
<param-value>true</param-value>
</context-param>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
<!-- Configures Log4J for this web app. As this context specifies a context-param
"log4jConfigLocation", its file path is used to load the Log4J configuration. -->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<!-- Starts Spring application context. The parent one. The web context
is started by Dispatcher servlet. -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>fileServlet</servlet-name>
<url-pattern>/file/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/pages/protected/index.xhtml</welcome-file>
</welcome-file-list>
<filter>
<filter-name>encoding-filter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter>
<filter-name>fileNotFoundFilter</filter-name>
<filter-class>com.dhl.finFw.web.filter.FileNotFoundFilter</filter-class>
</filter>
<filter>
<filter-name>browserCacheControlFilter</filter-name>
<filter-class>com.dhl.finFw.web.filter.BrowserCacheControlFilter</filter-class>
</filter>
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encoding-filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>fileNotFoundFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>browserCacheControlFilter</filter-name>
<url-pattern>/pages/protected/integration/subscriptionScheduler.xhtml</url-pattern>
</filter-mapping>
<error-page>
<exception-type>org.springframework.security.access.AccessDeniedException</exception-type>
<location>/pages/public/error/accessDenied.xhtml</location>
</error-page>
<error-page>
<exception-type>java.lang.Throwable</exception-type>
<location>/pages/public/error/internal.xhtml</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/pages/public/error/internal.xhtml</location>
</error-page>
<error-page>
<error-code>404</error-code>
<location>/pages/public/error/notFound.xhtml</location>
</error-page>
<error-page>
<error-code>403</error-code>
<location>/pages/public/error/accessDenied.xhtml</location>
</error-page>
</web-app>
ViewScope.java
视图范围.java
public class ViewScope implements Scope {
private Logger logger = LoggerFactory.getLogger(getClass());
public static final String VIEW_SCOPE_CALLBACKS = "viewScope.callbacks";
@Override
public Object get(String name, ObjectFactory<?> objectFactory) {
Map<String, Object> viewMap = getViewMap();
Object instance = viewMap.get(name);
if (instance == null) {
instance = objectFactory.getObject();
synchronized (viewMap) {
viewMap.put(name, instance);
logger.debug("Bean '{}' has been put to ViewScope.", instance);
}
} else {
logger.debug("Going to return an existing bean '{}'", instance);
}
return instance;
}
@Override
public Object remove(String name) {
Object instance = getViewMap().remove(name);
if (instance != null) {
Map<String, Runnable> callbacks = (Map<String, Runnable>) getViewMap().get(VIEW_SCOPE_CALLBACKS);
if (callbacks != null) {
callbacks.remove(name);
logger.debug("Bean '{}' has been removed.", instance);
}
}
return instance;
}
@Override
public void registerDestructionCallback(String name, Runnable runnable) {
Map<String, Runnable> callbacks = (Map<String, Runnable>) getViewMap().get(VIEW_SCOPE_CALLBACKS);
if (callbacks != null) {
callbacks.put(name, runnable);
logger.debug("Registered callback for '{}'", name);
}
}
/**
* {@inheritDoc}
*/
@Override
public Object resolveContextualObject(String name) {
FacesContext facesContext = FacesContext.getCurrentInstance();
FacesRequestAttributes facesRequestAttributes = new FacesRequestAttributes(facesContext);
return facesRequestAttributes.resolveReference(name);
}
@Override
public String getConversationId() {
FacesContext facesContext = FacesContext.getCurrentInstance();
FacesRequestAttributes facesRequestAttributes = new FacesRequestAttributes(facesContext);
return facesRequestAttributes.getSessionId() + "-" + facesContext.getViewRoot().getViewId();
}
private Map<String, Object> getViewMap() {
return FacesContext.getCurrentInstance().getViewRoot().getViewMap();
}
}
回答by Angelo Fuchs
It seems like you call this in your initmethod of AbstractIntegrationManagedBean.
好像你把这个在你init的方法AbstractIntegrationManagedBean。
You have to make sure that hibernate gets set up properly before that point.
您必须确保在此之前正确设置了休眠。
Most likely your configuration does not reflect that and you assume hibernate to be already there, although there is no guarantee for that.
很可能您的配置没有反映这一点，并且您假设休眠已经存在，尽管不能保证这一点。
See this question for more details: How to control order of bean init-method invocation in Spring?
有关更多详细信息，请参阅此问题：如何控制 Spring 中 bean init-method 调用的顺序？
回答by Zmicier Zaleznicenka
To prevent a LazyLoadingExceptionin my application, I use a helper method that first merges the entity back to the session and then initializes the requested collections. It recently turned out, that sometimes it still suffers from the "collection is not associated with any session" issue despite the session seems to be open and looks fine overall. It's hard for me to say what is the cause of such behavior, but still I found a remedy against it. Try to refresh the entity state before fetching the lazy collection using session.refresh(entity). This will cause Hibernate to reload your entity from the DB. After doing this, your current session will let you to load your collections smoothly with Hibernate.initialize().
为了防止LazyLoadingException在我的应用程序中出现 a ，我使用了一个辅助方法，该方法首先将实体合并回会话，然后初始化请求的集合。最近发现，尽管会话似乎是开放的并且总体上看起来不错，但有时它仍然会遇到“集合与任何会话无关”的问题。我很难说这种行为的原因是什么，但我仍然找到了一种补救措施。在使用 获取惰性集合之前尝试刷新实体状态session.refresh(entity)。这将导致 Hibernate 从数据库重新加载您的实体。执行此操作后，您当前的会话将允许您使用Hibernate.initialize().
回答by Pishtewan Agha
I too had this problem however the problem for me was that i wasnt configuring the transactional management in my config file so :
我也有这个问题但是对我来说问题是我没有在我的配置文件中配置事务管理所以：
add @EnableTransactionManagementto java Config file
or
add <tx:annotation-driven/>to xml config file
添加@EnableTransactionManagement到java配置文件或添加<tx:annotation-driven/>到xml配置文件
回答by Roberto Rodriguez
I fixed this issue just putting @Transactionalat top of the method.
我解决了这个问题，只是放在@Transactional方法的顶部。
回答by Nitheesh Chandran
I fixed this issue just putting @Transactionalat top of the method.
And also get the class by its id like this:
我解决了这个问题，只是放在@Transactional方法的顶部。还可以通过其 id 获取类，如下所示：
Test s=get(test.getId())
回答by Haohao Lin
As @Zmicier Zaleznicenka has pointed out, this exception message may have nothing to do with the Session. We have also encountered this problem, but the root cause was the entity primary key setting defined in the mapping file was incorrect. For example, in the following code, the database column "Foo_SK" is not the unique identifier of the table.
正如@Zmicier Zaleznicenka 指出的那样，此异常消息可能与 Session 无关。我们也遇到过这个问题，但是根本原因是映射文件中定义的实体主键设置不正确。例如，在下面的代码中，数据库列“Foo_SK”不是表的唯一标识符。
Id(x => x.Id, "Foo_SK").GeneratedBy.Assigned();
In our case, we have no control over the database schema. Therefore, we fixed the problem by using composite key mapping.
在我们的例子中，我们无法控制数据库模式。因此，我们通过使用复合键映射解决了该问题。
